Pololu QTR-MD-05RC Reflectance Array - 5-Channel, 8mm Pitch Ardumoto Motor Driver Shield com/adafruit-fona-mini-gsm-gprs-cellular-phone-module

com/adafruit-fona-mini-gsm-gprs-cellular-phone-module

This means you can power it straight from the programmer

The isolation is up to 3kv for 5 seconds

Do not drive its digital pins above 3

robotics practice

Pololu QTR-MD-05RC Reflectance Array - 5-Channel, 8mm Pitch Ardumoto Motor Driver Shield com/adafruit-fona-mini-gsm-gprs-cellular-phone-moduleDetect Nearby Objects Without Contact The Reflectance Sensor Array QTR MD 05RC 5 Channel 8mm Pitch RC Output is an optical interrupter sensor with digital output designed for obstacle detection, touchless triggers, object counting, and simple automation. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds. Key details include Operating voltage: 2. 9 V to 5. 5 V. Why youll love it Useful spec: QTR