Tiny Scarab

The Tiny Scarab is an open-source development board built around the popular 10 cent CH32V003F4P6 RISC-V microcontroller from WCH. Using this dev board is uncomplicated: just plug it into your computer with a USB-C cable, and you're ready to code - the flasher/debugger is already embedded in the board for your convenience. Now you might wonder - why yet another dev board? Aren't there thousands already?

Well - this dev board is presented to you with a new coding IDE. Not satisfied with the current offering of IDEs for microcontrollers, we created a brand new one from scratch: Embeetle IDE. With the Tiny Scarab and Embeetle IDE, you'll discover how smooth programming a microcontroller can be.

This open-source dev board is developed in collaboration with the DevHeads community. Please join the DevHeads Discord channel if you want to know more about this Tiny Scarab board, Embeetle IDE or any other topic related to hardware and embedded software. We're waiting for you on the server!

 

Overview

The Tiny Scarab is based on the 10-cent RISC-V CH32V003F4P6 MCU from WCH:

The Tiny Scarab board merges the WCH-LinkE-R0-1v3 flash/debug probe and the CH32V003F4P6-EVT-R0-1v1 board into a single development board:

There's no need to wire up anything. Just plug the Tiny Scarab's USB-C port in your computer, fire up Embeetle IDE and start coding!

 

Index

• Hardware

  • Download Tiny Scarab Schematic
  • Open Tiny Scarab in KiCAD
  • A Deeper Dive in the KiCAD Files
  • Tiny Scarab Pinout and Features
  • Tiny Scarab vs CH32V003F4P6-EVT-R0-1v1 - a Comparison
  • Production Files

• Software

  • Flash/Debug Probe Firmware
  • Target MCU Firmware

NOTES FOR MYSELF

Improvement points:

• Bulges in encasing don't fit board. (fixed)
• Tag Connect needs a recess in the enclosure. (fixed)
• Light bleeds between lightpipes. Lightpipes and LEDs too expensive. (fixed)
• Graphical membrane needs 1.2mm edge. (fixed)
• 3/5V indication on board is wrong. On graphical membrane it's correct. (fixed)