Stmounter

Created by [Chengyin Yao] • Started on May 23, 2025

STM32 Development Board

Stmounter

  • Total time spent: 14.5h

Damn I can't think of a better name >.<


23/05

But I've started the schematic! Progress looking quite good right now. The stm32 looks like an easy chip.

  • Time spent: 1h

24/05

I've researched a toooon about the usb c shield connection: resistor cap pair, ferrite bear, no conenction, connect directly etc. Figured that the best way to connect it is directly to a gnd pour.

Also started designing the schematic!

  • 2h

Decided on a raspi pico form factor because why not ;p It'll be a drop-in replacement.

  • 1.5h

Finally found a stm32 getting started manual! This will make my like easier ;p

Only 29 pages tho, how little.

  • 2h

Okay I've opened like 4 pdfs now, in datasheet hell... Welp this is easier then my fpga though. Calculating oscillator capacitance rn.

I've calculated the capacitance and continued routing:

  • 1.5h

25/05

Okay I've finished routing the v1 of the board!

Buuuut I think I messed up the chip selection... I need a 2.5$ chip for the USB programming option :(

Time for v2

  • 2.5h

Started drawing the schematic for the STM32F373CCT, also reorganized the top part of the PCB.

  • 1h

Okay I spent the whole afternoon on this, finished rev 2!!!

  • 2.5h

Updated readme... Ugh

  • 0.5h

Aaaand some more

  • 0.5h