Report Arduino with RFID error in Microelectronics Posted March 18, 2022 Hi, all! 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 .
Arduino with RFID error
in Microelectronics
Posted
Hi, all! 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 .