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I'm interested to know the current drawn by a kitchen LCD digital
timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding?
(Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right?
I mean a timer similar to this one, running off a 1.5V battery. >https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
I'm interested to know the current drawn by a kitchen LCD digital
timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding?
(Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right?
I mean a timer similar to this one, running off a 1.5V battery. https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD digital
timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding?
(Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right?
I mean a timer similar to this one, running off a 1.5V battery.
https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA, 9v) that measure current wirelessly, or datalog.
On 5/10/2025 9:58 AM, john larkin wrote:
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD digital
timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding?
(Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right?
I mean a timer similar to this one, running off a 1.5V battery.
https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA, 9v) that
measure current wirelessly, or datalog.
Hey! I like that idea!
On Sat, 10 May 2025 10:56:01 -0500, John S <Sophi.2@invalid.org>
wrote:
On 5/10/2025 9:58 AM, john larkin wrote:
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD digital
timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding?
(Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right?
I mean a timer similar to this one, running off a 1.5V battery.
https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA, 9v) that
measure current wirelessly, or datalog.
Hey! I like that idea!
A small PCB could have a tiny lithium battery and a uP with an
internal ADC. A diode would make a logarithmic current-to-voltage
converter from picoamps to milliamps. May as well report temperature
too.
Someone could sketch a schematic to discuss. It needs the right uP and
some code. And some mechanical design.
Might not handle high peak currents, amps.
Of course the electronics could be in a box with a tiny flex running
to the dummy battery. Or just squeeze the flex between the battery and
a contact. Or just sell the flex, with banana plugs on the other end
to go into a DVM. That's too easy.
On Sat, 10 May 2025 10:56:01 -0500, John S <Sophi.2@invalid.org>
wrote:
On 5/10/2025 9:58 AM, john larkin wrote:
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD digital
timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding?
(Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right?
I mean a timer similar to this one, running off a 1.5V battery.
https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA, 9v) that
measure current wirelessly, or datalog.
Hey! I like that idea!
A small PCB could have a tiny lithium battery and a uP with an
internal ADC. A diode would make a logarithmic current-to-voltage
converter from picoamps to milliamps. May as well report temperature
too.
Someone could sketch a schematic to discuss. It needs the right uP and
some code. And some mechanical design.
Might not handle high peak currents, amps.
Of course the electronics could be in a box with a tiny flex running
to the dummy battery. Or just squeeze the flex between the battery and
a contact. Or just sell the flex, with banana plugs on the other end
to go into a DVM. That's too easy.
On 5/10/25 9:15 AM, john larkin wrote:
On Sat, 10 May 2025 10:56:01 -0500, John S <Sophi.2@invalid.org>
wrote:
On 5/10/2025 9:58 AM, john larkin wrote:
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD digital
timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding?
(Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right?
I mean a timer similar to this one, running off a 1.5V battery.
https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA, 9v) that >>>> measure current wirelessly, or datalog.
Hey! I like that idea!
A small PCB could have a tiny lithium battery and a uP with an
internal ADC. A diode would make a logarithmic current-to-voltage
converter from picoamps to milliamps. May as well report temperature
too.
Someone could sketch a schematic to discuss. It needs the right uP and
some code. And some mechanical design.
Might not handle high peak currents, amps.
Of course the electronics could be in a box with a tiny flex running
to the dummy battery. Or just squeeze the flex between the battery and
a contact. Or just sell the flex, with banana plugs on the other end
to go into a DVM. That's too easy.
There are a few products already available to easily do such
measurements, such as:
https://www.joulescope.com
This can also provide the time integral of consumption to be able to
predict battery life. It can be especially tricky where devices have
microamp quiescent currents together with multi-milliamp bursts when active.
If a meter shunt is large enough to measure the sleep current it can
have too large a voltage burden when the device springs to life -
accurate measurement of microvolts across the sense resistor is required.
I have measured sleep currents with an ordinary DVM fairly successfully
by putting a large electrolytic across the terminals to avoid the large
drop during the active times.
I'm interested to know the current drawn by a kitchen LCD digital
timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding?
(Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right?
I mean a timer similar to this one, running off a 1.5V battery. >https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
On 17:15 10 May 2025, john larkin said:
On Sat, 10 May 2025 10:56:01 -0500, John S <Sophi.2@invalid.org>
wrote:
On 5/10/2025 9:58 AM, john larkin wrote:
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD digital
timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding?
(Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right?
I mean a timer similar to this one, running off a 1.5V battery.
https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA, 9v)
that measure current wirelessly, or datalog.
Hey! I like that idea!
A small PCB could have a tiny lithium battery and a uP with an
internal ADC. A diode would make a logarithmic current-to-voltage
converter from picoamps to milliamps. May as well report temperature
too.
Someone could sketch a schematic to discuss. It needs the right uP
and some code. And some mechanical design.
Might not handle high peak currents, amps.
Of course the electronics could be in a box with a tiny flex running
to the dummy battery. Or just squeeze the flex between the battery
and a contact. Or just sell the flex, with banana plugs on the other
end to go into a DVM. That's too easy.
I asked the question about current consumption because, when the time
is up, I leave my kitchen timer beeping until it cuts out. That's
usually a minute of beeping.
If this is done a couple of times a day, would the AAA battery run out
in an appreciably shorter time?
On Sun, 11 May 2025 17:51:56 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
On 17:15 10 May 2025, john larkin said:
On Sat, 10 May 2025 10:56:01 -0500, John S <Sophi.2@invalid.org>
wrote:
On 5/10/2025 9:58 AM, john larkin wrote:
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD digital
timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding?
(Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right?
I mean a timer similar to this one, running off a 1.5V battery.
https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA, 9v)
that measure current wirelessly, or datalog.
Hey! I like that idea!
A small PCB could have a tiny lithium battery and a uP with an
internal ADC. A diode would make a logarithmic current-to-voltage
converter from picoamps to milliamps. May as well report temperature
too.
Someone could sketch a schematic to discuss. It needs the right uP
and some code. And some mechanical design.
Might not handle high peak currents, amps.
Of course the electronics could be in a box with a tiny flex running
to the dummy battery. Or just squeeze the flex between the battery
and a contact. Or just sell the flex, with banana plugs on the other
end to go into a DVM. That's too easy.
I asked the question about current consumption because, when the time
is up, I leave my kitchen timer beeping until it cuts out. That's
usually a minute of beeping.
That sounds anoying. I use a mechanical timer with "extended ring" and sometimes want to drown it.
If this is done a couple of times a day, would the AAA battery run out
in an appreciably shorter time?
Wild guess 50 mA. A good (not Amazon) AAA is good for about an
amp-hour, which is 20 hours of beeping. At 2 minutes/day, it 's good
for roughly 600 days. Replace the batteries every year.
What are you cooking? My biscuits are critical. One minute over or
under wrecks them. I set the timer to 15 minutes and start inspecting
from there.
On 17:15 10 May 2025, john larkin said:
On Sat, 10 May 2025 10:56:01 -0500, John S <Sophi.2@invalid.org>
wrote:
On 5/10/2025 9:58 AM, john larkin wrote:
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD digital
timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding?
(Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right?
I mean a timer similar to this one, running off a 1.5V battery.
https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA, 9v)
that measure current wirelessly, or datalog.
Hey! I like that idea!
A small PCB could have a tiny lithium battery and a uP with an
internal ADC. A diode would make a logarithmic current-to-voltage
converter from picoamps to milliamps. May as well report temperature
too.
Someone could sketch a schematic to discuss. It needs the right uP
and some code. And some mechanical design.
Might not handle high peak currents, amps.
Of course the electronics could be in a box with a tiny flex running
to the dummy battery. Or just squeeze the flex between the battery
and a contact. Or just sell the flex, with banana plugs on the other
end to go into a DVM. That's too easy.
I asked the question about current consumption because, when the time
is up, I leave my kitchen timer beeping until it cuts out. That's
usually a minute of beeping.
If this is done a couple of times a day, would the AAA battery run out
in an appreciably shorter time?
On 2025-05-11 12:51, Pamela wrote:
On 17:15 10 May 2025, john larkin said:
On Sat, 10 May 2025 10:56:01 -0500, John S <Sophi.2@invalid.org>
wrote:
On 5/10/2025 9:58 AM, john larkin wrote:
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD digital
timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding?
(Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right?
I mean a timer similar to this one, running off a 1.5V battery.
https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA, 9v)
that measure current wirelessly, or datalog.
Hey! I like that idea!
A small PCB could have a tiny lithium battery and a uP with an
internal ADC. A diode would make a logarithmic current-to-voltage
converter from picoamps to milliamps. May as well report temperature
too.
Someone could sketch a schematic to discuss. It needs the right uP
and some code. And some mechanical design.
Might not handle high peak currents, amps.
Of course the electronics could be in a box with a tiny flex running
to the dummy battery. Or just squeeze the flex between the battery
and a contact. Or just sell the flex, with banana plugs on the other
end to go into a DVM. That's too easy.
I asked the question about current consumption because, when the time
is up, I leave my kitchen timer beeping until it cuts out. That's
usually a minute of beeping.
If this is done a couple of times a day, would the AAA battery run out
in an appreciably shorter time?
I admire your patience. That would drive me nuts. I doubt that the
beeper requires much current--piezo sounders are pretty efficient at
turning battery power into annoying noises. ;)
Cheers
Phil Hobbs
On Sun, 11 May 2025 16:32:03 -0400, Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:
On 2025-05-11 12:51, Pamela wrote:
On 17:15 10 May 2025, john larkin said:
On Sat, 10 May 2025 10:56:01 -0500, John S <Sophi.2@invalid.org>
wrote:
On 5/10/2025 9:58 AM, john larkin wrote:
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD digital >>>>>>> timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding? >>>>>>> (Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right?
I mean a timer similar to this one, running off a 1.5V battery.
https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA, 9v)
that measure current wirelessly, or datalog.
Hey! I like that idea!
A small PCB could have a tiny lithium battery and a uP with an
internal ADC. A diode would make a logarithmic current-to-voltage
converter from picoamps to milliamps. May as well report temperature
too.
Someone could sketch a schematic to discuss. It needs the right uP
and some code. And some mechanical design.
Might not handle high peak currents, amps.
Of course the electronics could be in a box with a tiny flex running
to the dummy battery. Or just squeeze the flex between the battery
and a contact. Or just sell the flex, with banana plugs on the other
end to go into a DVM. That's too easy.
I asked the question about current consumption because, when the time
is up, I leave my kitchen timer beeping until it cuts out. That's
usually a minute of beeping.
If this is done a couple of times a day, would the AAA battery run out
in an appreciably shorter time?
I admire your patience. That would drive me nuts. I doubt that the
beeper requires much current--piezo sounders are pretty efficient at
turning battery power into annoying noises. ;)
Cheers
Phil Hobbs
Whoever invented the piezo buzzer should be welded into a prison cell,
with a dozen piezo buzzers.
On Sun, 5/11/2025 4:57 PM, john larkin wrote:
On Sun, 11 May 2025 16:32:03 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:
On 2025-05-11 12:51, Pamela wrote:
On 17:15 10 May 2025, john larkin said:
On Sat, 10 May 2025 10:56:01 -0500, John S <Sophi.2@invalid.org>
wrote:
On 5/10/2025 9:58 AM, john larkin wrote:
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD digital >>>>>>>> timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding? >>>>>>>> (Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right? >>>>>>>>
I mean a timer similar to this one, running off a 1.5V battery. >>>>>>>> https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA, 9v) >>>>>>> that measure current wirelessly, or datalog.
Hey! I like that idea!
A small PCB could have a tiny lithium battery and a uP with an
internal ADC. A diode would make a logarithmic current-to-voltage
converter from picoamps to milliamps. May as well report temperature >>>>> too.
Someone could sketch a schematic to discuss. It needs the right uP
and some code. And some mechanical design.
Might not handle high peak currents, amps.
Of course the electronics could be in a box with a tiny flex running >>>>> to the dummy battery. Or just squeeze the flex between the battery
and a contact. Or just sell the flex, with banana plugs on the other >>>>> end to go into a DVM. That's too easy.
I asked the question about current consumption because, when the time
is up, I leave my kitchen timer beeping until it cuts out. That's
usually a minute of beeping.
If this is done a couple of times a day, would the AAA battery run out >>>> in an appreciably shorter time?
I admire your patience. That would drive me nuts. I doubt that the
beeper requires much current--piezo sounders are pretty efficient at
turning battery power into annoying noises. ;)
Cheers
Phil Hobbs
Whoever invented the piezo buzzer should be welded into a prison cell,
with a dozen piezo buzzers.
Does a piezo run off 1.5V ?
This sounds like alien technology.
I'm interested to know the current drawn by a kitchen LCD digital
timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding?
(Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right?
I mean a timer similar to this one, running off a 1.5V battery. https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
On 20:45 11 May 2025, john larkin said:
On Sun, 11 May 2025 17:51:56 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
On 17:15 10 May 2025, john larkin said:
On Sat, 10 May 2025 10:56:01 -0500, John S <Sophi.2@invalid.org>
On 5/10/2025 9:58 AM, john larkin wrote:
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD
digital timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding? >>>>>>> (Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right?
I mean a timer similar to this one, running off a 1.5V battery.
https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA, 9v)
that measure current wirelessly, or datalog.
Hey! I like that idea!
A small PCB could have a tiny lithium battery and a uP with an
internal ADC. A diode would make a logarithmic current-to-voltage
converter from picoamps to milliamps. May as well report
temperature too.
Someone could sketch a schematic to discuss. It needs the right uP
and some code. And some mechanical design.
Might not handle high peak currents, amps.
Of course the electronics could be in a box with a tiny flex
running to the dummy battery. Or just squeeze the flex between the
battery and a contact. Or just sell the flex, with banana plugs on
the other end to go into a DVM. That's too easy.
I asked about current consumption because, when the time is up, I
leave my kitchen timer beeping until it cuts out. That's usually a
minute of beeping.
That sounds anoying. I use a mechanical timer with "extended ring"
and sometimes want to drown it.
If this is done a couple of times a day, would the AAA battery run
out in an appreciably shorter time?
Wild guess 50 mA. A good (not Amazon) AAA is good for about an
amp-hour, which is 20 hours of beeping. At 2 minutes/day, it 's good
for roughly 600 days. Replace the batteries every year.
What are you cooking? My biscuits are critical. One minute over or
under wrecks them. I set the timer to 15 minutes and start inspecting
from there.
When I'm cooking the radio is on, the big extractor fan whirring away
and the tap gets left running (yes!). So beeps from the timer add only
a little more noise.
That extra minute of beeping is useful when cooking something like
pasta (or maybe a hard boiled egg) and you want to cook for just a bit >longer.
The question is ... is this truly wasteful on the battery or does it
make little difference?
I suspect a piezo buzzer doesn't emit repeated sets of beeps without an >external chip, so the spec sheet may not contain the consumption info.
On 15:20 12 May 2025, john larkin said:
On Mon, 12 May 2025 10:55:50 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
On 20:45 11 May 2025, john larkin said:
On Sun, 11 May 2025 17:51:56 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
On 17:15 10 May 2025, john larkin said:
On Sat, 10 May 2025 10:56:01 -0500, John S <Sophi.2@invalid.org> >>>>>>>On 5/10/2025 9:58 AM, john larkin wrote:
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD
digital timer.
(1) How much current does the timer draw when counting time? >>>>>>>>>
(2) How much current is drawn when the piezo buzzer is
sounding? (Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about
right?
I mean a timer similar to this one, running off a 1.5V
battery.
https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA,
9v) that measure current wirelessly, or datalog.
Hey! I like that idea!
A small PCB could have a tiny lithium battery and a uP with an
internal ADC. A diode would make a logarithmic current-to-voltage
converter from picoamps to milliamps. May as well report
temperature too.
Someone could sketch a schematic to discuss. It needs the right
uP and some code. And some mechanical design.
Might not handle high peak currents, amps.
Of course the electronics could be in a box with a tiny flex
running to the dummy battery. Or just squeeze the flex between
the battery and a contact. Or just sell the flex, with banana
plugs on the other end to go into a DVM. That's too easy.
I asked about current consumption because, when the time is up, I
leave my kitchen timer beeping until it cuts out. That's usually a
minute of beeping.
That sounds anoying. I use a mechanical timer with "extended ring"
and sometimes want to drown it.
If this is done a couple of times a day, would the AAA battery run
out in an appreciably shorter time?
Wild guess 50 mA. A good (not Amazon) AAA is good for about an
amp-hour, which is 20 hours of beeping. At 2 minutes/day, it 's
good for roughly 600 days. Replace the batteries every year.
What are you cooking? My biscuits are critical. One minute over or
under wrecks them. I set the timer to 15 minutes and start
inspecting from there.
When I'm cooking the radio is on, the big extractor fan whirring away
and the tap gets left running (yes!). So beeps from the timer add
only a little more noise.
That extra minute of beeping is useful when cooking something like
pasta (or maybe a hard boiled egg) and you want to cook for just a
bit longer.
The question is ... is this truly wasteful on the battery or does it
make little difference?
Use good batteries and replace them once a year. I do all mine in
January. Food is too important to take chances.
I suspect a piezo buzzer doesn't emit repeated sets of beeps without
an external chip, so the spec sheet may not contain the consumption
info.
No, the piezo is usually a passive polarized ceramic strip, and the
driver is in the main timer chip.
When I get a new microwave, the first thing I do is open it up and
destroy the piezo. I don 't need a loud annoying BEEP BEEP to know
when the microwave is done. We kinda autistic engineers are triggered
by loud noises like that.
And I have a pretty good timer in my head, which some people do. I
usually know what time it is, within a minute or two. Quantitative
instinct.
It's said good cooks often have a very accurate sense of time. However
I am poor at that, which is why I need something to time even an extra >minute. Most people could guess a minute reasonably well but I often
lose track!
On 15:20 12 May 2025, john larkin said:
On Mon, 12 May 2025 10:55:50 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
On 20:45 11 May 2025, john larkin said:
On Sun, 11 May 2025 17:51:56 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
On 17:15 10 May 2025, john larkin said:
On Sat, 10 May 2025 10:56:01 -0500, John S <Sophi.2@invalid.org> >>>>>>>On 5/10/2025 9:58 AM, john larkin wrote:
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD
digital timer.
(1) How much current does the timer draw when counting time? >>>>>>>>>
(2) How much current is drawn when the piezo buzzer is
sounding? (Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about
right?
I mean a timer similar to this one, running off a 1.5V
battery.
https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA,
9v) that measure current wirelessly, or datalog.
Hey! I like that idea!
A small PCB could have a tiny lithium battery and a uP with an
internal ADC. A diode would make a logarithmic current-to-voltage
converter from picoamps to milliamps. May as well report
temperature too.
Someone could sketch a schematic to discuss. It needs the right
uP and some code. And some mechanical design.
Might not handle high peak currents, amps.
Of course the electronics could be in a box with a tiny flex
running to the dummy battery. Or just squeeze the flex between
the battery and a contact. Or just sell the flex, with banana
plugs on the other end to go into a DVM. That's too easy.
I asked about current consumption because, when the time is up, I
leave my kitchen timer beeping until it cuts out. That's usually a
minute of beeping.
That sounds anoying. I use a mechanical timer with "extended ring"
and sometimes want to drown it.
If this is done a couple of times a day, would the AAA battery run
out in an appreciably shorter time?
Wild guess 50 mA. A good (not Amazon) AAA is good for about an
amp-hour, which is 20 hours of beeping. At 2 minutes/day, it 's
good for roughly 600 days. Replace the batteries every year.
What are you cooking? My biscuits are critical. One minute over or
under wrecks them. I set the timer to 15 minutes and start
inspecting from there.
When I'm cooking the radio is on, the big extractor fan whirring away
and the tap gets left running (yes!). So beeps from the timer add
only a little more noise.
That extra minute of beeping is useful when cooking something like
pasta (or maybe a hard boiled egg) and you want to cook for just a
bit longer.
The question is ... is this truly wasteful on the battery or does it
make little difference?
Use good batteries and replace them once a year. I do all mine in
January. Food is too important to take chances.
I suspect a piezo buzzer doesn't emit repeated sets of beeps without
an external chip, so the spec sheet may not contain the consumption
info.
No, the piezo is usually a passive polarized ceramic strip, and the
driver is in the main timer chip.
When I get a new microwave, the first thing I do is open it up and
destroy the piezo. I don 't need a loud annoying BEEP BEEP to know
when the microwave is done. We kinda autistic engineers are triggered
by loud noises like that.
And I have a pretty good timer in my head, which some people do. I
usually know what time it is, within a minute or two. Quantitative
instinct.
It's said good cooks often have a very accurate sense of time. However
I am poor at that, which is why I need something to time even an extra >minute. Most people could guess a minute reasonably well but I often
lose track!
It's said good cooks often have a very accurate sense of time. However
I am poor at that, which is why I need something to time even an extra minute. Most people could guess a minute reasonably well but I often
lose track!
On Mon, 12 May 2025 10:55:50 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
On 20:45 11 May 2025, john larkin said:
On Sun, 11 May 2025 17:51:56 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
On 17:15 10 May 2025, john larkin said:
On Sat, 10 May 2025 10:56:01 -0500, John S <Sophi.2@invalid.org>
On 5/10/2025 9:58 AM, john larkin wrote:
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD
digital timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding? >>>>>>>> (Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right? >>>>>>>>
I mean a timer similar to this one, running off a 1.5V battery. >>>>>>>> https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA, 9v) >>>>>>> that measure current wirelessly, or datalog.
Hey! I like that idea!
A small PCB could have a tiny lithium battery and a uP with an
internal ADC. A diode would make a logarithmic current-to-voltage
converter from picoamps to milliamps. May as well report
temperature too.
Someone could sketch a schematic to discuss. It needs the right uP
and some code. And some mechanical design.
Might not handle high peak currents, amps.
Of course the electronics could be in a box with a tiny flex
running to the dummy battery. Or just squeeze the flex between the
battery and a contact. Or just sell the flex, with banana plugs on
the other end to go into a DVM. That's too easy.
I asked about current consumption because, when the time is up, I
leave my kitchen timer beeping until it cuts out. That's usually a
minute of beeping.
That sounds anoying. I use a mechanical timer with "extended ring"
and sometimes want to drown it.
If this is done a couple of times a day, would the AAA battery run
out in an appreciably shorter time?
Wild guess 50 mA. A good (not Amazon) AAA is good for about an
amp-hour, which is 20 hours of beeping. At 2 minutes/day, it 's good
for roughly 600 days. Replace the batteries every year.
What are you cooking? My biscuits are critical. One minute over or
under wrecks them. I set the timer to 15 minutes and start inspecting
from there.
When I'm cooking the radio is on, the big extractor fan whirring away
and the tap gets left running (yes!). So beeps from the timer add only
a little more noise.
That extra minute of beeping is useful when cooking something like
pasta (or maybe a hard boiled egg) and you want to cook for just a bit
longer.
The question is ... is this truly wasteful on the battery or does it
make little difference?
Use good batteries and replace them once a year. I do all mine in
January. Food is too important to take chances.
I suspect a piezo buzzer doesn't emit repeated sets of beeps without an
external chip, so the spec sheet may not contain the consumption info.
No, the piezo is usually a passive polarized ceramic strip, and the
driver is in the main timer chip.
When I get a new microwave, the first thing I do is open it up and
destroy the piezo. I don 't need a loud annoying BEEP BEEP to know
when the microwave is done. We kinda autistic engineers are triggered
by loud noises like that.
And I have a pretty good timer in my head, which some people do. I
usually know what time it is, within a minute or two. Quantitative
instinct.
On Sun, 11 May 2025 16:32:03 -0400, Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:
On 2025-05-11 12:51, Pamela wrote:
On 17:15 10 May 2025, john larkin said:
On Sat, 10 May 2025 10:56:01 -0500, John S <Sophi.2@invalid.org>
wrote:
On 5/10/2025 9:58 AM, john larkin wrote:
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD digital >>>>>>> timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding? >>>>>>> (Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right?
I mean a timer similar to this one, running off a 1.5V battery.
https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA, 9v)
that measure current wirelessly, or datalog.
Hey! I like that idea!
A small PCB could have a tiny lithium battery and a uP with an
internal ADC. A diode would make a logarithmic current-to-voltage
converter from picoamps to milliamps. May as well report temperature
too.
Someone could sketch a schematic to discuss. It needs the right uP
and some code. And some mechanical design.
Might not handle high peak currents, amps.
Of course the electronics could be in a box with a tiny flex running
to the dummy battery. Or just squeeze the flex between the battery
and a contact. Or just sell the flex, with banana plugs on the other
end to go into a DVM. That's too easy.
I asked the question about current consumption because, when the time
is up, I leave my kitchen timer beeping until it cuts out. That's
usually a minute of beeping.
If this is done a couple of times a day, would the AAA battery run out
in an appreciably shorter time?
I admire your patience. That would drive me nuts. I doubt that the
beeper requires much current--piezo sounders are pretty efficient at
turning battery power into annoying noises. ;)
Cheers
Phil Hobbs
Whoever invented the piezo buzzer should be welded into a prison cell,
with a dozen piezo buzzers.
On 12/05/2025 15:20, john larkin wrote:
On Mon, 12 May 2025 10:55:50 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
On 20:45 11 May 2025, john larkin said:
On Sun, 11 May 2025 17:51:56 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
On 17:15 10 May 2025, john larkin said:
On Sat, 10 May 2025 10:56:01 -0500, John S <Sophi.2@invalid.org>
On 5/10/2025 9:58 AM, john larkin wrote:
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD
digital timer.
(1) How much current does the timer draw when counting time? >>>>>>>>>
(2) How much current is drawn when the piezo buzzer is sounding? >>>>>>>>> (Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right? >>>>>>>>>
I mean a timer similar to this one, running off a 1.5V battery. >>>>>>>>> https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA, 9v) >>>>>>>> that measure current wirelessly, or datalog.
Hey! I like that idea!
A small PCB could have a tiny lithium battery and a uP with an
internal ADC. A diode would make a logarithmic current-to-voltage
converter from picoamps to milliamps. May as well report
temperature too.
Someone could sketch a schematic to discuss. It needs the right uP >>>>>> and some code. And some mechanical design.
Might not handle high peak currents, amps.
Of course the electronics could be in a box with a tiny flex
running to the dummy battery. Or just squeeze the flex between the >>>>>> battery and a contact. Or just sell the flex, with banana plugs on >>>>>> the other end to go into a DVM. That's too easy.
I asked about current consumption because, when the time is up, I
leave my kitchen timer beeping until it cuts out. That's usually a
minute of beeping.
That sounds anoying. I use a mechanical timer with "extended ring"
and sometimes want to drown it.
If this is done a couple of times a day, would the AAA battery run
out in an appreciably shorter time?
Wild guess 50 mA. A good (not Amazon) AAA is good for about an
amp-hour, which is 20 hours of beeping. At 2 minutes/day, it 's good
for roughly 600 days. Replace the batteries every year.
What are you cooking? My biscuits are critical. One minute over or
under wrecks them. I set the timer to 15 minutes and start inspecting
from there.
When I'm cooking the radio is on, the big extractor fan whirring away
and the tap gets left running (yes!). So beeps from the timer add only
a little more noise.
That extra minute of beeping is useful when cooking something like
pasta (or maybe a hard boiled egg) and you want to cook for just a bit
longer.
The question is ... is this truly wasteful on the battery or does it
make little difference?
Use good batteries and replace them once a year. I do all mine in
January. Food is too important to take chances.
I suspect a piezo buzzer doesn't emit repeated sets of beeps without an
external chip, so the spec sheet may not contain the consumption info.
No, the piezo is usually a passive polarized ceramic strip, and the
driver is in the main timer chip.
When I get a new microwave, the first thing I do is open it up and
destroy the piezo. I don 't need a loud annoying BEEP BEEP to know
when the microwave is done. We kinda autistic engineers are triggered
by loud noises like that.
And I have a pretty good timer in my head, which some people do. I
usually know what time it is, within a minute or two. Quantitative
instinct.
You are the exact opposite of my wife, who's signature phrase is:
"Good heavens! It can't be that time."
On 12:10 12 May 2025, Martin Brown said:
On 10/05/2025 14:37, Pamela wrote:
I'm interested to know the current drawn by a kitchen LCD digital
timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding?
(Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right?
I mean a timer similar to this one, running off a 1.5V battery.
https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
Second one might be about right perhaps 10mA is more likely but I'd
be very surprised if the display operating and timing current was
more than 20uA (and it could easily be lower).
Bare metal LCDs take almost no current at all (but have to be driven
with an AC signal). They are no different at the core to LCD digital
watches with an alarm function probably even using the same chips and
a slightly beefier piezo sounder.
If beeping consumes 10mA then, in theory, you would get 100 hours of
beeping from single AA alkaline (1,000 mAh).
That's 6,000 one-minute "overruns", under optimal conditions. Let's say
it's only 1,500 in real life conditions.
In conclusion, if overruning beeping is done twice a day, then the
battery would last a couple of years.
That's seems slightly optimisitic because I usually change the battery
about once a year or so when I don't let the beeping run on. (However, the abttery is changed largely because the display has started to dim.)
On 11/05/2025 21:57, john larkin wrote:
On Sun, 11 May 2025 16:32:03 -0400, Phil HobbsHow about a few of those birthday cards which play a 'tune' when opened
<pcdhSpamMeSenseless@electrooptical.net> wrote:
On 2025-05-11 12:51, Pamela wrote:
On 17:15 10 May 2025, john larkin said:
On Sat, 10 May 2025 10:56:01 -0500, John S <Sophi.2@invalid.org>
wrote:
On 5/10/2025 9:58 AM, john larkin wrote:
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD digital >>>>>>>> timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding? >>>>>>>> (Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right? >>>>>>>>
I mean a timer similar to this one, running off a 1.5V battery. >>>>>>>> https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA, 9v) >>>>>>> that measure current wirelessly, or datalog.
Hey! I like that idea!
A small PCB could have a tiny lithium battery and a uP with an
internal ADC. A diode would make a logarithmic current-to-voltage
converter from picoamps to milliamps. May as well report temperature >>>>> too.
Someone could sketch a schematic to discuss. It needs the right uP
and some code. And some mechanical design.
Might not handle high peak currents, amps.
Of course the electronics could be in a box with a tiny flex running >>>>> to the dummy battery. Or just squeeze the flex between the battery
and a contact. Or just sell the flex, with banana plugs on the other >>>>> end to go into a DVM. That's too easy.
I asked the question about current consumption because, when the time
is up, I leave my kitchen timer beeping until it cuts out. That's
usually a minute of beeping.
If this is done a couple of times a day, would the AAA battery run out >>>> in an appreciably shorter time?
I admire your patience. That would drive me nuts. I doubt that the
beeper requires much current--piezo sounders are pretty efficient at
turning battery power into annoying noises. ;)
Cheers
Phil Hobbs
Whoever invented the piezo buzzer should be welded into a prison cell,
with a dozen piezo buzzers.
- for special occasions?
On 20:45 11 May 2025, john larkin said:
On Sun, 11 May 2025 17:51:56 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
On 17:15 10 May 2025, john larkin said:
When I'm cooking the radio is on, the big extractor fan whirring away
and the tap gets left running (yes!). So beeps from the timer add only
a little more noise.
That extra minute of beeping is useful when cooking something like
pasta (or maybe a hard boiled egg) and you want to cook for just a bit longer.
The question is ... is this truly wasteful on the battery or does it
make little difference?
I suspect a piezo buzzer doesn't emit repeated sets of beeps without an external chip, so the spec sheet may not contain the consumption info.
On 2025-05-12 11:55, Pamela wrote:
On 20:45 11 May 2025, john larkin said:
On Sun, 11 May 2025 17:51:56 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
On 17:15 10 May 2025, john larkin said:
...
When I'm cooking the radio is on, the big extractor fan whirring away
and the tap gets left running (yes!). So beeps from the timer add only
a little more noise.
That extra minute of beeping is useful when cooking something like
pasta (or maybe a hard boiled egg) and you want to cook for just a bit
longer.
The question is ... is this truly wasteful on the battery or does it
make little difference?
I think it doesn't make a difference.
And it is not that trivial to measure, because cmos circuitry only draws current at the instant of switching. So, use a scope. Otherwise, I would
try to measure it.
I suspect a piezo buzzer doesn't emit repeated sets of beeps without an
external chip, so the spec sheet may not contain the consumption info.
On 5/10/25 9:15 AM, john larkin wrote:
On Sat, 10 May 2025 10:56:01 -0500, John S <Sophi.2@invalid.org>
wrote:
On 5/10/2025 9:58 AM, john larkin wrote:
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD digital
timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding?
(Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right?
I mean a timer similar to this one, running off a 1.5V battery.
https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA, 9v) that >>>> measure current wirelessly, or datalog.
Hey! I like that idea!
A small PCB could have a tiny lithium battery and a uP with an
internal ADC. A diode would make a logarithmic current-to-voltage
converter from picoamps to milliamps. May as well report temperature
too.
Someone could sketch a schematic to discuss. It needs the right uP and
some code. And some mechanical design.
Might not handle high peak currents, amps.
Of course the electronics could be in a box with a tiny flex running
to the dummy battery. Or just squeeze the flex between the battery and
a contact. Or just sell the flex, with banana plugs on the other end
to go into a DVM. That's too easy.
There are a few products already available to easily do such
measurements, such as:
https://www.joulescope.com
This can also provide the time integral of consumption to be able to
predict battery life. It can be especially tricky where devices have
microamp quiescent currents together with multi-milliamp bursts when
active.
If a meter shunt is large enough to measure the sleep current it can
have too large a voltage burden when the device springs to life -
accurate measurement of microvolts across the sense resistor is required.
I have measured sleep currents with an ordinary DVM fairly successfully
by putting a large electrolytic across the terminals to avoid the large
drop during the active times.
On Sun, 5/11/2025 4:57 PM, john larkin wrote:
On Sun, 11 May 2025 16:32:03 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:
On 2025-05-11 12:51, Pamela wrote:
On 17:15 10 May 2025, john larkin said:
On Sat, 10 May 2025 10:56:01 -0500, John S <Sophi.2@invalid.org>
wrote:
On 5/10/2025 9:58 AM, john larkin wrote:
On Sat, 10 May 2025 14:37:40 +0100, Pamela
<pamela.private.mailbox@gmail.com> wrote:
I'm interested to know the current drawn by a kitchen LCD digital >>>>>>>> timer.
(1) How much current does the timer draw when counting time?
(2) How much current is drawn when the piezo buzzer is sounding? >>>>>>>> (Averaging out beeps and silent bits.)
My guesses are 2mA and 25mA, respectively. Is that about right? >>>>>>>>
I mean a timer similar to this one, running off a 1.5V battery. >>>>>>>> https://www.amazon.com/Digital-Kitchen-Timer/dp/B00GOPICNM
That suggests a product line: a series of batteries (AA, AAA, 9v) >>>>>>> that measure current wirelessly, or datalog.
Hey! I like that idea!
A small PCB could have a tiny lithium battery and a uP with an
internal ADC. A diode would make a logarithmic current-to-voltage
converter from picoamps to milliamps. May as well report temperature >>>>> too.
Someone could sketch a schematic to discuss. It needs the right uP
and some code. And some mechanical design.
Might not handle high peak currents, amps.
Of course the electronics could be in a box with a tiny flex running >>>>> to the dummy battery. Or just squeeze the flex between the battery
and a contact. Or just sell the flex, with banana plugs on the other >>>>> end to go into a DVM. That's too easy.
I asked the question about current consumption because, when the time
is up, I leave my kitchen timer beeping until it cuts out. That's
usually a minute of beeping.
If this is done a couple of times a day, would the AAA battery run out >>>> in an appreciably shorter time?
I admire your patience. That would drive me nuts. I doubt that the
beeper requires much current--piezo sounders are pretty efficient at
turning battery power into annoying noises. ;)
Cheers
Phil Hobbs
Whoever invented the piezo buzzer should be welded into a prison cell,
with a dozen piezo buzzers.
Does a piezo run off 1.5V ?
This sounds like alien technology.
Do you design electronics? That benefits from quantitative instincts,
and I think helps develop them.
On 12/05/2025 16:39, john larkin wrote:
Do you design electronics? That benefits from quantitative instincts,
and I think helps develop them.
On some domestic appliances I have the designer has included thne option
to turn off the beeps :)
On Sun, 18 May 2025 09:28:19 +0100, alan_m <junk@admac.myzen.co.uk>
wrote:
On 12/05/2025 16:39, john larkin wrote:
Do you design electronics? That benefits from quantitative instincts,
and I think helps develop them.
On some domestic appliances I have the designer has included thne option
to turn off the beeps :)
The option should be to turn them on.
On 18/05/2025 18:18, john larkin wrote:
On Sun, 18 May 2025 09:28:19 +0100, alan_m <junk@admac.myzen.co.uk>How about the non-optional flashing mode that all LED torches seem to
wrote:
On 12/05/2025 16:39, john larkin wrote:
Do you design electronics? That benefits from quantitative instincts,
and I think helps develop them.
On some domestic appliances I have the designer has included thne option >>> to turn off the beeps :)
The option should be to turn them on.
have? Design sponsored by the manufacturers of migraine drugs?
On Sun, 18 May 2025 19:47:37 +0100, Sam Plusnet <not@home.com> wrote:
On 18/05/2025 18:18, john larkin wrote:
On Sun, 18 May 2025 09:28:19 +0100, alan_m <junk@admac.myzen.co.uk>How about the non-optional flashing mode that all LED torches seem to
wrote:
On 12/05/2025 16:39, john larkin wrote:
Do you design electronics? That benefits from quantitative instincts, >>>>> and I think helps develop them.
On some domestic appliances I have the designer has included thne option >>>> to turn off the beeps :)
The option should be to turn them on.
have? Design sponsored by the manufacturers of migraine drugs?
If your car is dead on the side of a road, they can be used as a
warning that will last longer than a flare.
Still, a closet light doesn't need to blink.
I get migraine auras but don't get the headache, which can be horrible
for some people for days.
Yesterday the upper half of my visual field want dark, with a sort ofNever had a burning tree. It's probably best to avoid googling for that.
burning tree in the corner. That's a new one. Couldn't read for about
20 minutes.
On some domestic appliances I have the designer has included thne option
to turn off the beeps :)
On 18/05/2025 20:22, john larkin wrote:
On Sun, 18 May 2025 19:47:37 +0100, Sam Plusnet <not@home.com> wrote:
On 18/05/2025 18:18, john larkin wrote:
On Sun, 18 May 2025 09:28:19 +0100, alan_m <junk@admac.myzen.co.uk>How about the non-optional flashing mode that all LED torches seem to
wrote:
On 12/05/2025 16:39, john larkin wrote:
Do you design electronics? That benefits from quantitative instincts, >>>>>> and I think helps develop them.
On some domestic appliances I have the designer has included thne option >>>>> to turn off the beeps :)
The option should be to turn them on.
have? Design sponsored by the manufacturers of migraine drugs?
If your car is dead on the side of a road, they can be used as a
warning that will last longer than a flare.
Agreed, but the design is such that you have to click through all the >possible modes, in order to switch the torch off.
I wouldn't mind if flashing was a separate selectable mode, but the
usual arrangement just puts lots of extra wear on the ON/OFF switch -
which is always the weakest component in the whole thing.>
Still, a closet light doesn't need to blink.
I get migraine auras but don't get the headache, which can be horrible
for some people for days.
I have the same from time to time (aura but no headache). It sometimes
makes reading difficult, but doesn't usually last more than a few minutes. >Fortunetely I've never had the problem whilst driving.>
Yesterday the upper half of my visual field want dark, with a sort ofNever had a burning tree. It's probably best to avoid googling for that.
burning tree in the corner. That's a new one. Couldn't read for about
20 minutes.