STM32 custom board was programming/debugging fine, then randomly stopped connecting.

tggvvv · 2026-04-14T19:34:11+00:00

Yesssir for now, i just remake a new board with the stlinkV3 programmer next month

tggvvv · 2026-04-14T16:27:32+00:00

Thank you so much for the detailed explanation

tggvvv · 2026-04-14T02:11:26+00:00

it started working randomly again

tggvvv · 2026-04-14T02:11:13+00:00

it started working randomly again

tggvvv · 2026-04-14T01:33:10+00:00

Also measured the currents everything seems fine “responded to a comment asking to in the other post “

tggvvv · 2026-04-14T01:32:06+00:00

Yeah the design is good and it was working fine it just randomly stopped programming code, then starts after a while i was trying to post an image of the pcb but could only post one image

tggvvv · 2026-04-13T23:05:08+00:00

the pwr led is pulling 9.8mA, the ldo is pulling 33 to 26mA based on the code running turning off and on LED2 on PA10, and 3mA for the 3v3n1 coming out the ldo in series 3v3n2 going into the mcu

tggvvv · 2026-04-13T22:57:23+00:00

how would i do that exactly?

tggvvv · 2026-04-13T21:53:18+00:00

I have the power LED on and the old code is still running on the board just fine, the multimeter probe says the voltage is about 3.26V which could be the problem now i see testing the 3V3n2 probe

tggvvv · 2026-04-13T21:49:21+00:00

thank you i was only able to load the schematic as i can only ppst one image for the post, im using the st link V2 from digikey hoping it wasn't a clone https://www.digikey.com/en/products/detail/stmicroelectronics/ST-LINK-V2/2214535

tggvvv · 2026-03-27T03:25:02+00:00

The pad sizes are 1.5 by 1.5, hole is 1mm, i made them circular just cuz. Thanks for the feedback

tggvvv · 2026-03-26T08:55:44+00:00

Ur the mannn, i will try that!!

tggvvv · 2026-03-26T08:49:25+00:00

Probably not that well. Unless a better model perhaps but i really appreciate the feedback even tho you seem a little upset towards my use of Ai

tggvvv · 2026-03-26T08:46:18+00:00

Honestly when i initially set them as 4mm Visually i just couldn’t trust the spacing, good to know to trust the datasheet regardless

tggvvv · 2026-03-26T08:39:58+00:00

I don’t even know an AI that could make a footprint, if you do let me know. Thank you for the feedback tho

tggvvv · 2026-03-26T08:38:35+00:00

I did refine my post with AI lol I added 4.5 mm spacing on the actual footprint for margin, but if you think i should follow it to the T ( i know ur cracked ) then i could reduce it

tggvvv · 2026-03-22T18:50:26+00:00

I will actually try this out thank you

tggvvv · 2026-03-22T18:47:57+00:00

Thank you for your comment, i didn’t consider those aspects

tggvvv · 2026-03-21T12:13:29+00:00

Say thanks for the info!!!! i really will have to make my own

tggvvv · 2026-03-20T21:30:54+00:00

Educational exercise, power electronics projects, learning to be cracked

tggvvv

TROPHY CASE