Looks good quality. Professional package. Tested all 3 by: After power on the blue led flash slowly. Press button stop flash and press again start flash. Show up in PC on USB. The MCU is marked ST, so seems to be ST original.
Economiche ma ben assemblate. Pcb di buona qualità. Il micro non ha bisogno di presentazioni... Potentissimo.
Exactly what I was looking for and easy to setup and run using Arduino. How to use the BOOT0 andNRST to program it took some time to figure out
still to test
Superb Produkt. Perfect for experimenting with USB, I2C and SPI.
Excelente