Paul Bishop has developed a simple light pen input device for use with the Arduino (Atmega328). The hardware consists of a CDS photocell connected between +5 volts and Analog 0, and the code uses the TVout library for video output through several resistors to an RCA plug. To increase the pen’s sensitivity or adjust response, […]
Tag Archives: input device
Laptop touchpad interfaced with Arduino
Here’s an interesting article showing how to interface a common laptop touchpad with an Arduino. Metku’s project connects the Data, Clock, +5 V and ground connections on the touchpad to Arduino Pins 5 and 6, and power connections. Sample code is included, and the Arduino/Wiring library provides the necessary codehooks. In the video they demonstrate […]