Please check my esp32-s3 pins

munderwoods
Posts: 3
Joined: Mon Jul 29, 2024 5:33 pm

Please check my esp32-s3 pins

Postby munderwoods » Mon Jul 29, 2024 5:41 pm

Hello! I am designing a board for work and it's my first time using an esp32. It's been a bit confusing figuring out which pins I am supposed to use, which I am not, and which is best for what. Could any of you take a quick look at what I'm doing here and tell me if there's anything obviously stupid?

I am using the esp32 module because I need a lot of connectivity options. I have a W5500 Ethernet circuit wired up on the SPI and a MAX3485 RS485 circuit on some gpio. The PISO and SIPO go to bit-shift registers in both directions.
2024-07-29-103155_1073x733_scrot.png
2024-07-29-103155_1073x733_scrot.png (114.41 KiB) Viewed 1838 times
Thanks very much, any input is appreciated!

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jgustavoam
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Re: Please check my esp32-s3 pins

Postby jgustavoam » Fri Aug 02, 2024 12:27 am

Retired IBM Brasil
Electronic hobbyist since 1976.

RandomInternetGuy
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Joined: Fri Aug 11, 2023 4:56 am

Re: Please check my esp32-s3 pins

Postby RandomInternetGuy » Sun Aug 04, 2024 2:08 pm

1) Before you build, prototype. Dev boards are faster and cheaper than the fastest and cheapest PCB house.

2) Reading datasheets is essential, as already answered, but also see. https://github.com/atomic14/esp32-s3-pinouts

munderwoods
Posts: 3
Joined: Mon Jul 29, 2024 5:33 pm

Re: Please check my esp32-s3 pins

Postby munderwoods » Tue Aug 06, 2024 11:02 pm

Thanks guys, I'll read through this stuff. I did prototype a bunch, but it's damn hard to get the W5500 working, I just can't solder those tiny pins properly.

munderwoods
Posts: 3
Joined: Mon Jul 29, 2024 5:33 pm

Re: Please check my esp32-s3 pins

Postby munderwoods » Wed Aug 07, 2024 4:53 pm

Thanks very much for the replies! The repo was super helpful. I had read a lot of the docs already, but they are fairly confusing and just thought since I had some trouble with it it would be smart to get another pair of eyes on it before I go to print. I have built many prototype boards for different modules of this PCB, and I have eliminated all my screw ups that actually broke stuff, but wanted to make sure there wasn't anything more subtle that might mess me up later down the line.

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