1984halting Posted February 25, 2022 Report Share Posted February 25, 2022 don't know if it's the right place to pull my question my Arduino ide software serial monitor is showing like firmware version : 0x0 = unknown WARNING :Communication failure, is the mfrc522 properly connected ? scan picc to see uid, sak, type, and data blocks.... can you help me . Quote Link to comment Share on other sites More sharing options...
latigid on Posted February 26, 2022 Report Share Posted February 26, 2022 Not sure if this is the right place for Arduino... Quote Link to comment Share on other sites More sharing options...
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