Compared to the Arduino Uno of old, modern microcontrollers are absolutely tiny — especially for the amount of processing power and I/O you get. But if you need something really small, like ...

This uses hardware PWM as an efficient way to generate the ouput signal. But therefore servos need to be connected to pins with PWM functionallity. The servos can be calibrated using 2 points (min / ...

ssd1306 library for stm32 using stm32-hal library's. This library works with i2c and is configured for 128x64 oled panels by default. If you search 4-wire SPI support ...