COVID-19 impact: We are still operating and shipping all orders! We are operating with a reduced staff, so for critical requirements, including fighting COVID-19, please contact us so we can identify priorities. Click here for more info.

Arduino Library for the Pololu QTR Reflectance Sensors

Arduino IDE with Pololu QTR sensors superimposed over it.

View entire document on a single page.
You can also view this document as a printable PDF.

1. Introduction
2. Library Installation
3. QTRSensors Methods & Usage Notes

New Products

10:1 Metal Gearmotor 37Dx65L mm 24V with 64 CPR Encoder (Helical Pinion)
Free Circuit Cellar magazine November 2019
100:1 Metal Gearmotor 37Dx73L mm 24V with 64 CPR Encoder (Helical Pinion)
3-Channel Wide FOV Time-of-Flight Distance Sensor Using OPT3101 (No Headers)
12V, 4.5A Step-Down Voltage Regulator D36V50F12
MSP432 LaunchPad Assembled with Headers for TI-RSLK MAX
VClamp for RoboClaw or MCP Controllers
131:1 Metal Gearmotor 37Dx73L mm 24V with 64 CPR Encoder (Helical Pinion)
Magnetic Encoder Disc for 20D mm Metal Gearmotors, OD 9.7 mm, ID 2.0 mm, 12 CPR (Bulk)
Pololu Wheel for Micro Servo Splines (20T, 4.8mm) - 40×7mm, White, 2-Pack
Log In
Pololu Robotics & Electronics
Shopping cart
(702) 262-6648
Same-day shipping, worldwide
Menu
Shop Blog Forum Support
My account Comments or questions? About Pololu Contact Ordering information Distributors