Articles taggedCH32V

Installing the rv003usb USB bootloader on a CH32V003 breakout board so programs can be written over a USB cable: the USB circuit, building the bootloader with PlatformIO and writing it with minichlink, option byte settings, and entering the bootloader with the reset button.

A general-purpose CH32V003F4P6 breakout board designed in KiCad and hand-soldered: soldering the TSSOP20 and USB Type-C connector, a regulator pinout mistake found at power-up and the workaround, a socket that takes the WCH-Link directly, and LED blink and button tests in MounRiver Studio Ⅱ.

Driving a WS2812B (NeoPixel) RGB LED from a CH32V003 using SPI and DMA, reusing the ch32fun driver header in a MounRiver Studio Ⅱ project. Covers wiring, the two register-name fixes for the official SDK, and a sample that cycles through six colors.

Generate a 50 Hz PWM signal with TIM1 on the CH32V003 microcontroller using the official SDK in MounRiver Studio Ⅱ and drive an RC servo motor (MG90D), with reusable servo.h/servo.c code and oscilloscope verification of the 1.5 ms pulse.

Setting up the CH32V003, a low-cost RISC-V microcontroller, in the VSCode-based MounRiver Studio Ⅱ: installing the IDE, creating a project, wiring a test circuit with the WCH-LinkE, enabling SDI printf debugging, and blinking an LED.