Adafruit INA3221 Triple 26V ±3.2A DC Power Monitor - STEMMA QT/Qwiic
SKU: TH1990
In Stock₹1,273.22
₹1,079.00 (Ex. of GST)
SKU: TH2040
The Adafruit TCRT1000 Reflective Photo Interrupt Sensor – STEMMA is a plug-and-play reflective IR sensor designed for fast object detection, line tracking, and proximity sensing in robotics and embedded projects. Built around the reliable TCRT1000 infrared reflective sensor, it emits IR light and detects reflections from nearby surfaces, allowing your microcontroller to instantly detect when an object is present.
The Adafruit TCRT1000 Reflective Photo Interrupt Sensor – STEMMA is a plug-and-play reflective IR sensor designed for fast object detection, line tracking, and proximity sensing in robotics and embedded projects. Built around the reliable TCRT1000 infrared reflective sensor, it emits IR light and detects reflections from nearby surfaces, allowing your microcontroller to instantly detect when an object is present.
Unlike bare reflective sensors that require resistors and breadboard wiring, this breakout comes fully assembled and ready to use. Simply supply 3–5V power and read the digital signal output. When no reflection is detected the signal stays HIGH, and when IR light reflects back from an object the signal drops LOW—making it easy to interface with Arduino, Raspberry Pi, micro:bit, and other development boards.
An onboard potentiometer lets you adjust the IR emitter brightness to tune sensitivity and detection distance for different surfaces and environments. The board also includes status LEDs for quick visual feedback—a green LED indicates power and a red LED lights when the sensor detects reflection.
With its STEMMA JST-PH connector, this sensor connects quickly without soldering, making it perfect for rapid prototyping and robotics projects.
Technical details for Adafruit TCRT1000 Reflective Photo Interrupt Sensor.
| Specification | Details |
|---|---|
| Sensor Type | Reflective Optical / Infrared Photo Interrupt Sensor |
| Sensor Module | TCRT1000 |
| Detection Method | Infrared reflection sensing |
| Operating Voltage | 3V to 5V DC |
| Output Type | Digital output |
| Output Logic | HIGH when no reflection is detected, LOW when reflective IR light is detected |
| Pull-up Resistor | 10K onboard pull-up |
| IR Emitter Current | Adjustable from approximately 1mA to 100mA |
| Sensitivity Adjustment | Onboard potentiometer for IR emitter brightness adjustment |
| Indicators | Green power LED and red detection LED |
| LED Control | Both onboard LEDs can be disabled |
| Connector Type | JST-PH 2.0mm pitch STEMMA connector |
| Interface Pins | SIG, VIN, GND |
| Mounting | Compact breakout board with mounting holes |
| Typical Applications | Line following, object detection, reflective sensing, encoder sensing, edge detection |
| Pin / Component | Description |
|---|---|
| VIN | Power input for the sensor board. Connect to the same voltage as your microcontroller logic level (typically 3V–5V). |
| GND | Common ground for both power and signal. |
| SIG | Digital output signal from the TCRT1000 sensor. The output is HIGH when no reflection is detected and LOW when IR light is reflected back to the sensor. |
| STEMMA JST-PH Connector | 3-pin JST-PH (2.0mm pitch) STEMMA connector for quick plug-and-play connection. |
| STEMMA GND | Ground connection through the JST cable (black wire). |
| STEMMA VIN / V+ | Power input through the JST cable (red wire). |
| STEMMA SIG / In | Signal output to the microcontroller through the JST cable (white wire). |
| Potentiometer | Adjusts the brightness of the IR emitter to control sensitivity. Turning down reduces current (~10mA) and sensitivity; turning up increases current (~100mA) and detection sensitivity. |
| Signal LED (Red) | Lights up when the sensor detects reflected IR light from an object. |
| Signal LED Jumper | Back-side jumper labeled Sig. Cut the trace to disable the signal LED. |
| Power LED (Green) | Indicates that the board is powered. |
| Power LED Jumper | Back-side jumper labeled On. Cut the trace to disable the power LED. |
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