Combine Arduino with RC522 RFID, control CD4067, realize the function of scanning the chessboard, and obtain 90 ID data. Scan the entire ID again, compare the ID data, find out the difference, and ...
Arduino library for controlling analog/digital multiplexers (A/D mux) of any size, like CMOS 4000 series (8-channel 4051 (CD4051, 74HC4051, CD74HC4051), 16-channel 4067 (CD4067, 74HC4067, CD74HC4067), ...