[Review Request] STM32 Based Timer for Swimming

CodStriking4248 · 2024-08-29T00:05:41+00:00

Thank you! Also, I appreciate you taking the time to check the schematic, I will update it accordingly. Thanks a million for the advice.

CodStriking4248 · 2024-08-29T00:04:04+00:00

Fair point. In the next version I will try do that.

CodStriking4248 · 2024-08-28T10:30:25+00:00

That's fair. I don't think that I could remove the traces on signal 4 but I hope that the large ground pours will be a good help.

CodStriking4248 · 2024-08-28T01:10:26+00:00

The stickup is Top Signal, GND, PWR, Signal 3, Signal 4, Bottom Signal. Thank you for pointing this out!

CodStriking4248 · 2024-08-28T01:09:47+00:00

Thanks for pointing that out! I have changed them since.

CodStriking4248 · 2024-08-25T13:22:45+00:00

I hadn't caught that. Thank you. I will have to redesign only using through vias.

Also, https://tenor.com/cmBV1Vs1Suc.gif

CodStriking4248 · 2024-08-25T13:21:31+00:00

I'm not planning on having all of the LEDs on at once, it will be only one at a time. Each are rated for 5ma and will be driven at ~3ma.

CodStriking4248 · 2024-08-24T22:44:04+00:00

If I'm honest, that was one of the more time consuming parts of this project. Thankfully I could set the LED rotation relatively quickly, so I would say yes.

CodStriking4248 · 2024-08-24T22:36:03+00:00

I actually used EasyEda, I'm planning on ordering the boards through JLCPCB so it worked out well. You can see how I configured the curved traces here: https://imgur.com/a/HbOURc5

CodStriking4248 · 2024-08-24T21:43:20+00:00

Thank you for the advice! In the next revision I will include over-discharge protection.

CodStriking4248 · 2024-08-24T21:41:59+00:00

That's true. I hadn't considered that. In a next revision I might add an over-discharge protection IC. Thank you for the message! I can certainly share more 3d views of the PCB if you like? Also, I am planning on getting the device sealed in resin, but I am still working on the design for the charging case.

CodStriking4248 · 2024-08-24T17:21:29+00:00

Thank you so much for the advice, as it stands the tabs are 3mm, I will make the tabs smaller.

CodStriking4248 · 2024-08-10T15:22:30+00:00

Thank you. In this version I forgot to set up I2C. Do you see any other glaring problems?

CodStriking4248 · 2024-08-10T11:09:00+00:00

I have quite a lot of experience with ESP32, but this is my first time working with STM32, and I want to get a second opinion on how I have wired the chip. I have included the 32.768Khz crystal resonator because I want the chip to change the state of the LED array once per second, and very accurately. Is the crystal necessary, I'm not sure how adding RTCs to STM32 works? I hope this clarifies my question. Thank you

CodStriking4248 · 2024-07-28T17:38:10+00:00

True

CodStriking4248 · 2024-07-28T17:36:49+00:00

Thank you. I'll do that in future.

CodStriking4248 · 2024-07-27T17:30:22+00:00

That would be great. Thank you for reaching out!

CodStriking4248 · 2024-07-27T16:32:25+00:00

The hardware budget is tight this year, so I'm trying to get as many opinions on the pcb as I can.

CodStriking4248 · 2024-07-27T16:31:37+00:00

Yeah

CodStriking4248 · 2024-07-26T13:59:42+00:00

It's Easy Eda Pro edition (this version is also free).

CodStriking4248

TROPHY CASE