Raspberry Pi 3 Model B GPIO 40 Pin Block Pinout

Graphic showing the GPIO pin breakout on the Raspberry Pi 3 Model B.

If you're looking for the new Raspberry Pi 3 Model B+ then you can find that here: Raspberry Pi 3 Model B+ GPIO 40 Pin Block & PoE Header Pinout

NEW! Raspberry Pi 3 Model B
Frequently Asked Questions	Comparison Chart	Technical Specifications
Unboxing Video	Pi3 Video Arcade Project

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Top Comments

Former Member over 11 years ago +6

Want to print this out for use on your header? I saved the image to my PC. Open with MSPaint. Go to Page Setup. Change your scaling to 18%. Print the image. Cut it out and press in place on your GPIO header…
gwideman over 10 years ago in reply to clem57 +4

clem57 I fully realize that you are not responsible for the RPi's deficient docs. And I thanked you earlier for your contribution to try to fill in the blank. You seem to think I'm criticizing you and…
shabaz over 10 years ago in reply to gwideman +4

I agree. It is quite moving that Element14's entire team, and Farnell/Newark, clem57 and others in the community do such a fantastic job supporting as best as they can, and get people up-to-speed on the…

clem57 over 10 years ago in reply to cstanton

Thanks both cstanton & shabaz for finding problem and alerting for a fix. Here is an excerpt for others to read:

My new shiny Raspberry Pi 3 arrived today and I tried to set it up as I normally do using a USB-UART adapter which plugs into the GPIO header. I use this as I don’t always have a network connection available and it’s easier to setup the static IP config and setup the wifi using the serial console which has always worked at 115200 baud.

When I powered on the Raspberry Pi 3 I only got garbled data from the serial console and so I connected the Pi to a network and logged in via SSH to configure the Pi. The serial console is enabled in raspi-config but this didn’t change anything.

I then connected a logic analyser to the UART pins and found that the baud rate when set to 115200 is actually 72000 !
Using this new baud rate I was able to access the pi using the serial console. I then tried changing the baud rate on the pi to use 9600 but the data logger shows that it is actually sending at 6002 baud which is around 1.6 times slower than it should be.
From https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=138162
Clem
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cstanton over 10 years ago in reply to shabaz

Looks like this is going to be fixed in the next firmware update? https://github.com/RPi-Distro/repo/issues/22
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clem57 over 10 years ago in reply to shabaz

Or maybe the software guys fixed what the hardware guys caused. Maybe they wanted shorter traces.
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shabaz over 10 years ago in reply to bwelsby

I think so : ( Basic testing would have identified the UART issue so I suspect they knew about it but released anyway, leave it to the users to slowly discover.
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bwelsby over 10 years ago in reply to shabaz

That's quite disturbing!!
Sounds like they have rushed the release for the 4th birthday.
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