This one is a Dev and OEM board including the CH32V003 MCU. Though it's tiny, there are Voltage regulator, LEDs for over-voltage and fuse protection, many test points and Xtal for MCU + RTC so it's tiny, cheap and full feature.
This project is a simple Demo/Dev bord for 28 pin PIC16F876 a 886 with Main clock xtal and low frequency xtal for RTC / sleep.
This is a small 24V PLC project where the board is hosting the same MCU as Arduino R4 Minima, allowing to program in C++ Via Aruidno IDE. It exports UART as well and RS485 + Analog Inputs, Digital Inputs and Outputs.
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