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 Keypad pin 7 to Arduino digital 6 //R2 Since ...

This tutorial will guide you through the process of building a tachometer around an Arduino. Tachometers are used to measure rotation rate in Revolutions Per Minute (RPM). You don’t need much… ...

Created by the parts supplier and Arduino tutorial creator Adafruit, the camera is built using an Arduino, an Eye-Fi Wi-Fi SD card, a TTL Serial JPEG camera, and a few other parts.