---
product_id: 55723621
title: "POLOLU-960 QTR-8A Reflectance Sensor Array /fba"
brand: "pololu"
price: "R$18"
currency: BRL
in_stock: false
reviews_count: 1
url: https://www.desertcart.com.br/products/55723621-pololu-960-qtr-8a-reflectance-sensor-array-fba
store_origin: BR
region: Brazil
---

# POLOLU-960 QTR-8A Reflectance Sensor Array /fba

**Brand:** pololu
**Price:** R$18
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** POLOLU-960 QTR-8A Reflectance Sensor Array /fba by pololu
- **How much does it cost?** R$18 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/55723621-pololu-960-qtr-8a-reflectance-sensor-array-fba)

## Best For

- pololu enthusiasts

## Why This Product

- Trusted pololu brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

This 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. Note: The QTR-8A reflectance sensor array requires analog inputs to take readings. The similar QTR-8RC reflectance sensor array is available with digital I/O-compatible outputs, and the reflectance sensor is available individually as a QTR-1A reflectance sensor or QTR-1RC reflectance sensor. The QTR-8A reflectance sensor array is intended as a line sensor, but it can be used as a general-purpose proximity or reflectance sensor. The module is a convenient carrier for eight IR emitter and receiver (phototransistor) pairs evenly spaced at intervals of 0.375" (9.525 mm). Each phototransistor is connected to a pull-up resistor to form a voltage divider that produces an analog voltage output between 0 V and VIN (which is typically 5 V) as a function of the reflected IR. Lower output voltage is an indication of greater reflection. The outputs are all independent, but the LEDs are arranged in pairs to halve current consumption. The LEDs are controlled by a MOSFET with a gate normally pulled high, allowing the LEDs to be turned off by setting the MOSFET gate to a low voltage. Turning the LEDs off might be advantageous for limiting power consumption when the sensors are not in use or for varying the effective brightness of the LEDs through PWM control. The LED current-limiting resistors for 5 V operation are arranged in two stages; this allows a simple bypass of one stage to enable operation at 3.3 V. The LED current is approximately 20-25 mA, making the total board consumption just under 100 mA. For a similar array with three sensors, consider our QTR-3A reflectance sensor array. The sensors

Review: Fantastic sensor - This is a brilliant if pricey sensor. I am using mine on maze solving robots and get super stable results every time. Well worth the price

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Pololu |
| Part Number | 960 |
| Package Dimensions | 17 x 10 x 0.1 cm; 10 g |
| Item model number | 960 |
| Item Package Quantity | 1 |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 10 g |

## Images

![POLOLU-960 QTR-8A Reflectance Sensor Array /fba - Image 1](https://m.media-amazon.com/images/I/41J3cnXxZWL.jpg)
![POLOLU-960 QTR-8A Reflectance Sensor Array /fba - Image 2](https://m.media-amazon.com/images/I/41r218OSTwL.jpg)
![POLOLU-960 QTR-8A Reflectance Sensor Array /fba - Image 3](https://m.media-amazon.com/images/I/41D+aLGejmL.jpg)
![POLOLU-960 QTR-8A Reflectance Sensor Array /fba - Image 4](https://m.media-amazon.com/images/I/41IoFiL6cPL.jpg)
![POLOLU-960 QTR-8A Reflectance Sensor Array /fba - Image 5](https://m.media-amazon.com/images/I/418jj6Fw1fL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fantastic sensor
*by D***H on 8 May 2019*

This is a brilliant if pricey sensor. I am using mine on maze solving robots and get super stable results every time. Well worth the price

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-02-21*