Tag Archives: diy arduino code lock

DIY Arduino Digital Code Lock

      Components required : 1) 1 x Arduino Uno R3 Board (Buy here) or 1 x Arduino Development Board (Buy here)  2) 1 x 16×2 LCD with Breakout Board (Buy here)3) 1 x 170 Point BreadBoard (Buy here)4) 1 x Single Channel 5V Relay Module (Buy here)5) 1 x 4*4 Keypad Matrix (Buy here)6) 1 x 5V Small Buzzer (Buy here) Optional1) […]