STM8S103F3P6 DEVELOPMENT BOARD If you want to develop projects on the STM8 platform and take advantage of the processing power and benefits of 32-bit microcontrollers in your applications, this development board is the one that can meet your needs in terms of price and functionality. The circuit can be powered via a USB microcontroller or by supplying power between 2.95V and 5.5V from the power inputs.