Keypad pin 2 to Arduino digital 5 //R1; Keypad pin 3 to Arduino digital 2 //C1; Keypad pin 4 to Arduino digital 8 //R4; Keypad pin 5 to Arduino digital 4 //C3; Keypad pin 6 to Arduino digital 7 //R3; ...

Circuit Diagram of Interfacing Membrane Keypad with Arduino Uno. Connection of Arduino with 4x4 keypad is quite simple. Connect the 4 columns of the keypad to digital pins 4, 5, 6, and 7 on the ...

Arduino Code for Digital Keypad Door Lock. The complete Arduino Door Lock Code can be found at the bottom of this page. ... SCHURTER's next-generation power entry module with IEC inlet and IP67-rated ...

All the code is available on GitHub in case you also have a DSC 1550 alarm system. It’s a pretty slick hack, so don’t forget to check out the video after the break.

Makers and developers that enjoy creating projects using the Arduino platform may be interested in a new shield for Arduino that incorporates an LCD JEMshield++, keypad and enclosure all in one.

Fig. 2 shows the circuit diagram of the automatic school bell. It is built around Arduino Uno R3, 16×2 LCD display with I2C (MOD1), DS3231 RTC, 4×4 matrix keypad, 5V SPDT relay, 230V AC call bell, and ...