A 4x4 membrane keypad is a compact and a cost-effective input device that is commonly used in a variety of electronics projects. It consists of 16 buttons arranged in a 4x4 grid and is covered with a ...

Description: The membrane keypad has keys 0-9, which play notes C4, D4, E4, F4, G4, A4, B4, C5, E5, and D5. The * and # keys are used to change the duration from 2/10 of a second and 8/10 of a second.

Download "sms_call_gate.ino" Sketch from the repository and Upload it to Arduino. NOTE : Make sure to replace your number in code at line number 71. The number must be in international format. After ...

This smart switch for agriculture irrigation system comprises an Arduino board with a GSM module that is remotely controlled by a smartphone. Through this adaptive technology, users can easily monitor ...