IR Proximity Obstacle Avoidance Sensor — adjustable and robot-ready

Detect nearby objects reliably with this compact IR module. It runs on 3–5V, has a digital OUT pin, and a trim pot to tune distance for different surfaces. Perfect for obstacle-avoidance robots, object counters, and hand-wave triggers.

Why/Benefits

• Adjustable range: dial in the distance with the onboard potentiometer.
• Simple wiring: 3-pin interface (VCC, GND, OUT) for quick prototyping.
• Onboard indicators: power and signal LEDs make tuning easy.

What you can build

• Obstacle-avoidance and edge-detection robots
• Hand-wave switches and proximity triggers
• Object counters and chute/feeder sensors

Starter bundles

• Arduino + this sensor + TT motors/robot chassis + dupont jumpers
• ESP32/ESP8266 dev board + breadboard + basic tools

Recommended add-ons

• Motor drivers & wheels for mobile bots
• Dupont wires and 5V regulators
• OLED/LED displays for on-bot feedback

Technical specifications

Pinout & power notes

• VCC: 3.3–5 V (match your controller’s logic if you can)
• GND: common ground with your microcontroller
• OUT: digital signal (typically goes LOW when an obstacle is detected); use an input with pull-up if needed
• Turn the trim pot slowly while watching the signal LED to set your trigger distance

What’s in the box

• 1× IR Proximity Obstacle Avoidance Sensor Module

FAQ

• Q: Will it work on 3.3 V systems?
  A: Yes, the module operates from 3–5 V. Wire VCC=3.3 V if you’re using 3.3 V boards.
• Q: Is the output analog?
  A: No, it’s a digital OUT (threshold set by the potentiometer).
• Q: It triggers falsely in bright light—any tips?
  A: Reduce sensitivity (turn the pot), shield the sensor from sunlight, and avoid highly reflective surfaces.