On 12/03/2026 16:41, Chris Green wrote:

This is ridiculous, I can find nowhere that tells me which end of the
40-pin header is pin 1. Can someone tell me please, or direct me to a
layout diagram which shows me.

Thank you.

Try https://pinout.xyz/


--
Chris

--- PyGate Linux v1.5.12
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

In message <adgb8m-uc1t2.ln1@q957.zbmc.eu>
Chris Green <cl@isbd.net> wrote:

The Natural Philosopher <tnp@invalid.invalid> wrote:

On 12/03/2026 16:41, Chris Green wrote:

This is ridiculous, I can find nowhere that tells me which end of the 40-pin header is pin 1. Can someone tell me please, or direct me to a layout diagram which shows me.

Thank you.

LOL!

It's in there buried at the bottom of the documentation

This is a handy thing to print out

https://i.sstatic.net/yHddo.png

Yes, **that** is what I wanted, thank you! :-)

Also note that the rectangular legend around the connecter has one mitred corner; this has been a standard way to denote pin 1 for decades in the electronics indstry.

David

--- PyGate Linux v1.5.12
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

On 12/03/2026 19:22, Chris Green wrote:

The Natural Philosopher <tnp@invalid.invalid> wrote:

On 12/03/2026 16:41, Chris Green wrote:

This is ridiculous, I can find nowhere that tells me which end of the
40-pin header is pin 1. Can someone tell me please, or direct me to a
layout diagram which shows me.

Thank you.

LOL!

It's in there buried at the bottom of the documentation

This is a handy thing to print out

https://i.sstatic.net/yHddo.png

Yes, **that** is what I wanted, thank you! :-)

I've been there etc.

There is a copious amount of online literature on this. The puzzle is
why you couldn't find it yourself...

--
"Strange as it seems, no amount of learning can cure stupidity, and
higher education positively fortifies it."

- Stephen Vizinczey



--- PyGate Linux v1.5.13
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

On 12/03/2026 19:20, Chris Green wrote:

Mike Easter <MikeE@ster.invalid> wrote:

Chris Townley wrote:

Chris Green wrote:

This is ridiculous, I can find nowhere that tells me which end of
the 40-pin header is pin 1. Can someone tell me please, or direct
me to a layout diagram which shows me.

Try https://pinout.xyz/

Great site.

Try this tidbit:

Pin 1 is the only pin with a square solder pad, which may only be
visible from the underside of your Pi.

Yes, that was the first thing I tried. My other Pis have a square pad
but the Pi Zero 2W doesn't, so no help there.

Really? I haven't uses a 2 W yet, only the W...
But they are supposed to be pin compatible

--
?People believe certain stories because everyone important tells them,
and people tell those stories because everyone important believes them. Indeed, when a conventional wisdom is at its fullest strength, one?s
agreement with that conventional wisdom becomes almost a litmus test of
one?s suitability to be taken seriously.?

Paul Krugman


--- PyGate Linux v1.5.13
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

On 12/03/2026 18:14, Chris Green wrote:

Chris Townley <news@cct-net.co.uk> wrote:

On 12/03/2026 16:41, Chris Green wrote:

This is ridiculous, I can find nowhere that tells me which end of the
40-pin header is pin 1. Can someone tell me please, or direct me to a
layout diagram which shows me.

Thank you.

Try https://pinout.xyz/

How does that help?

Oh, am I supposed to work it out from that inset diagram below the
main one? If so it's too small to be sure on my laptop screen.

https://pico2.pinout.xyz/

--
Brian Gregory (in England).

--- PyGate Linux v1.5.13
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

Sam Thomas <sam@noneya.com> wrote:

Chris Green <cl@isbd.net> wrote:

This is ridiculous, I can find nowhere that tells me which end of the
40-pin header is pin 1. Can someone tell me please, or direct me to a
layout diagram which shows me.

If only there was an FM... https://pip-assets.raspberrypi.com/categories/1088-raspberry-pi-pico-2-w/documents/RP-008304-DS-2-pico-2-w-datasheet.pdf

page 5.

sigh...wrong Pi flavor...on second pass, the Zero(2W) documentation
is sorely lacking, but it follows the convention of 1 being at the
end with the SD card slot. Square hole, like others have said.

--- PyGate Linux v1.5.13
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

Sam Thomas <sam@noneya.com> writes:

Chris Green <cl@isbd.net> wrote:

This is ridiculous, I can find nowhere that tells me which end of the
40-pin header is pin 1. Can someone tell me please, or direct me to a
layout diagram which shows me.

If only there was an FM... https://pip-assets.raspberrypi.com/categories/1088-raspberry-pi-pico-2-w/documents/RP-008304-DS-2-pico-2-w-datasheet.pdf

page 5.

I bought some hardware yesterday, being shipped, a GPIO extender for my
pi500. Anyway, I also included a gpio guide for $2. If you go to pishop
and zoom in on the item, you may get enough detail to know which pin is
1

That's the best I can come up with.

--- PyGate Linux v1.5.14
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

On 21/04/2026 23:09, Daniel wrote:

Sam Thomas <sam@noneya.com> writes:

Chris Green <cl@isbd.net> wrote:

This is ridiculous, I can find nowhere that tells me which end of the
40-pin header is pin 1. Can someone tell me please, or direct me to a
layout diagram which shows me.

If only there was an FM...
https://pip-assets.raspberrypi.com/categories/1088-raspberry-pi-pico-2-w/documents/RP-008304-DS-2-pico-2-w-datasheet.pdf

page 5.

I bought some hardware yesterday, being shipped, a GPIO extender for my pi500. Anyway, I also included a gpio guide for $2. If you go to pishop
and zoom in on the item, you may get enough detail to know which pin is
1

That's the best I can come up with.

I think we answered this several weeks ago?

--
The higher up the mountainside
The greener grows the grass.
The higher up the monkey climbs
The more he shows his arse.

Traditional


--- PyGate Linux v1.5.14
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)