If your classic car needs a good old-fashioned flasher module, you might find this build from [DIY Guy Chris] useful. It’s an all-analog build, with no need for microcontrollers or other ...

The CH32-Ant features a compact layout designed for breadboard compatibility, a Stemma QT connector for an I2C module on one end of the board ... I2C expansion Debugging – 3-pin 1-wire serial debug ...