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  • October-15 2020 01:03:11

    Nice cost effective development board for learning ARM processor. Paired this with the Geekcreit 3.5 Inch TFT Color Display Screen Module. Initially had problem flashing using USB/FTDI Slab. Found R3 on Boot 0 wrong value; IS: 100K, SB 10K resistor. Replaced resistor on module board (underside). Works perfect. Reflashed the standard ST bootloader using the STM32Cube app and now am able to flash code updates on the fly without having to switching the Boot 0 jumper. Overall, a very nice board

  • September-06 2020 05:20:19

    Good quality blue pill. has STM32 marking

  • November-16 2020 20:20:44

    Fonctionne bien. Par contre, la valeur de la résistance R3 de 100K est incorrecte, elle doit être de 10K pour pouvoir programmer en mettant le cavalier boot0 à 1 puis peser sur RESET. J'ai soudé une résistance 10K conventionnelle "through hole" en parallèle ( donne proche de 9K avec cet ajout et corrige le problème).

  • September-07 2020 00:43:38

    This is an ARM Cortex M3 board ("blue pill") running at 72Mhz with 64k flash and 20k SRAM. This is a good low cost general purpose MCU. The board form factor is roughly the same as an Arduino nano. The chip has better performance than a nano 328p, but programming it is clumsier. I recommend using a STLINK adaptor for programming. The ST datasheet can be found at:

  • fash22
    November-05 2020 02:54:14

    Functions as described... In case you are experiencing problems in using st-flash, you might try to rebuild the binaries from the latest repository on github

  • January-12 2021 13:00:05

    haven't tried it but looks good

  • December-31 2020 03:52:10

    A cheap and powerful alternative to Arduino

  • December-13 2020 01:53:41

    Very good and fastt delivery

  • December-01 2020 05:24:20

    As described.

  • November-29 2020 11:53:53



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