Sensor

Adafruit Standalone Momentary Capacitive Touch Sensor Breakout

Adafruit Standalone Momentary Capacitive Touch Sensor Breakout $5.95

Flick HAT - 3D Tracking and Gesture HAT for Raspberry Pi

Flick HAT - 3D Tracking and Gesture HAT for Raspberry Pi Sold Out

IR Break Beam Sensor - 3mm LEDs

IR Break Beam Sensor - 3mm LEDs $1.99

Magnetic Encoder Pair Kit for 20D mm Metal Gearmotors, 20 CPR, 2.7-18V

Magnetic Encoder Pair Kit for 20D mm Metal Gearmotors, 20 CPR, 2.7-18V $8.95

Ultrasonic Distance Sensor - HC-SR04

Ultrasonic Distance Sensor - HC-SR04 $17.95