2.4g mutual transmission remote control

The design uses the relatively cheap STM32F103C6T6, which is a processor priced at less than 6 yuan (July 2021). In the current situation where chips are in short supply and everyone is out of stock, its cost performance is relatively high. , and you can indeed use that to do some small projects, no problem at all

It comes with an OLED display and 4 buttons, as well as a reset button. I used a relatively common chip to charge the battery. Of course, in earlier versions, there was no very good way to enable this system to charge the battery over USB. Automatic switching between power supply and battery power, so a switch is used to achieve manual switching

 USB uses type C to support stm32duino, and I did make it recognized. For details on how to download and configure STM32DUINO, you can read this article http://www.baidu.com/link?url=sSEHa8n2LsNzxVCTCL7sAd8e_qYdGYi4OBk5EU4T1eqytgT0MT5GfJRSsk7eB7Ep-HU5-NJ21uKcHFpqr7Fo qR_KBnKxlXq8_TnskwOFDRS&wd =&eqid=a55d4fb00000bbd60000000660ff853f