toothache

Commonly used MCU all-purpose programmer

Overview

Screenshot 2020-11-30 11.36.35 pm.png Screenshot 2020-11-30 11.36.51.png The microcontrollers I commonly use include Arduino (AVR), STC, ESP32, STM32, etc. There are many and complicated burners, and there are many kinds of interfaces. I have to always carry a USB square port in my computer bag. MicroUSB, miniUSB, TYPEC and other cables are very troublesome. . But if you look closely at these writers, most of them are based on USB to serial port. You can add some peripheral circuits to integrate these writers into one, and use the more commonly used USBTypeC interface to make burning simple and fast. The circuit design takes into account the level issues of 3.3V and 5V microcontrollers, and a toggle switch is set up to adapt to microcontrollers with different voltages. The handling of the CH340C V3 pin is different from that in the manual, which needs to be verified by subsequent experiments. I am a newbie in PCB, so please give me some advice.

Design Files

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Update:2025-07-02 06:28:27

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