- QTR-3A Reflectance Sensor ArraySKU: POLOLU-2456 Brand: PololuThis compact module packs three IR LED/phototransistor pairs onto a 1.25″ × 0.3″ board. The sensors are mounted on a 0.375″ pitch, making this array a great minimal sensing solution for a line-following robot. Each sensor provides a separate analog voltage output.
- QTR-1A Reflectance Sensor (2-Pack)SKU: POLOLU-2458 Brand: PololuThe QTR-1A reflectance sensor carries a single infrared LED and phototransistor pair in an inexpensive, tiny 0.5" x 0.3" module that can be mounted almost anywhere and is great for edge detection and line following. The reflectance measurement is output as an analog voltage. This sensor is sold in packs of two units.
- QTR-8RC Reflectance Sensor ArraySKU: POLOLU-961 Brand: PololuThis sensor module has 8 IR LED/phototransistor pairs mounted on a 0.375" pitch, making it a great detector for a line-following robot. Pairs of LEDs are arranged in series to halve current consumption, and a MOSFET allows the LEDs to be turned off for additional sensing or power-savings options. Each sensor provides a separate digital I/O-measurable output.
- QTR-8A Reflectance Sensor ArraySKU: POLOLU-960 Brand: PololuThis sensor module has 8 IR LED/phototransistor pairs mounted on a 0.375" pitch, making it a great detector for a line-following robot. Pairs of LEDs are arranged in series to halve current consumption, and a MOSFET allows the LEDs to be turned off for additional sensing or power-savings options. Each sensor provides a separate analog voltage output.
Featured Products
View All
Add eight dazzling LEDs to your project or daisy chain for a longer display.
$3.20
View
The most powerful GlowBit display! A 64 LED matrix that can be easily tiled to c ...
$19.10
View
Display text, draw shapes, animations, and even create plots.
$12.25
View
RP2040 is Raspberry Pi's first microcontroller and it features Dual-core Arm Cor ...
$1.50
View