C6dev

Created by [ShyMike] • Started on July 26, 2025

A tiny and low power dev board for the ESP32-C6

Total time: 19 hours


July 26th: Started researching

Started looking for and reasearching a bunch of chips from Expressif and STMicroelectronics

Most interesting ones:

  • ESP32-S3
  • ESP32-C3
  • ESP32-C6
  • STM32F407
  • STM32F746

Total time spent: 1h


July 26th pt2: Made a choice and started designing the schematic

I ended up choosing the ESP32-C6 for it's low power consumption, speed, relatively low complexity and availability

Starting schematic

Total time spent: 1h


July 26th pt3: More schematic making :sob:

Tried to actually use net labels propperly and follow best practices while keeping the schematic clean and already have a 5v to 3.3v step down, crystals, flash, usb c, boot/reset buttons and a microSD.

Schematic looking decent

Schematicsssss

Total time spent: 3h


July 26th pt4: Finishing up the schematic

Should be finished with the schematic will double check everything for errors and start the with the PCB

Finished schematic

Total time spent: 2h


July 27th: PCB done (i think)

KiCad autosave is the best thing ever made by humanity

I thought that i had lost almost 2 hours of work but thankfully autosave saved me (don't ask why i didn't save for 2 hours, i don't know either)

After a lot of pain and suffering, and forgetting to place the pullups on the SDIO lines, the PCB is mostly finished and only needs some finishing touches

Finished PCB

im about 1% confident that the antenna will work

Also fixed some minor issues with the schematic

Finished schematic

i love RF i love RF i love RF

Total time spent: 6h


July 27th pt2: Polishing

Polishing tiny details on the PCb and adding silkscreen as well as checking prices

Total time spent: 1h


July 27th pt2: SILKSCREEEEEEN

PCB was looking extremely boring so ofc i had to spend copious amounts of time adding silkscreen art :3

(it's still not done, i need MORE)

PCB front

PCB back

The back is still quite empty and that will be dealt with later

Total time spent: 2h


July 28th: A lot of polish :3

Got all od the missing 3D models to make a cool PCB image and added a bunch of helpful and fun silkscreen stuff

PCB front

PCB back

The state of the PCB now :sob:

PCB

Total time spent: 2h


July 28th: README stuffs

Finished the README and BOM and double checked if im missing anything

Total time spent: 1h