SPECIFICATIONS

KY-032 Infrared Obstacle Avoidance Sensor Module 4pin 2-40cm Adjustable for Arduino Smart Car Robot DIY

Key Features & Benefits

🚗 Adjustable Range: 2-40cm detection distance, adjustable via potentiometer.

🔌 4-Pin Interface: VCC, GND, OUT, EN – 3.3V/5V compatible.

🎛️ Enable Control: EN pin for power saving.

⚙️ Frequency Adjustment: Dual potentiometers for fine tuning.

🧩 Fast Response: Ideal for obstacle avoidance, line tracking, drop prevention.

🌍 Wide Compatibility: Arduino, STM32, 51 MCU.

Product Description

Need obstacle avoidance for your smart car? KY-032 infrared sensor module is the perfect choice. Detection range 2-40cm adjustable, TTL output (0=obstacle, 1=clear). Enable pin for power control. Dual potentiometers for tuning. Perfect for robot obstacle avoidance, line tracking, counting.

⚡ Quick Start Guide & Important Tips

⚠️ Important:

Enable: Short EN to GND (jumper cap) for normal operation.

Adjustment: Turn 502 pot fully clockwise, then adjust 103 pot against white wall for max range.

Dark objects: Reduce detection distance.

Power: 3.3-5V only.

🔹 Arduino Code

int ledPin = 13;
int sensorPin = 3;
void setup() {
pinMode(ledPin, OUTPUT);
pinMode(sensorPin, INPUT);
}
void loop() {
if (digitalRead(sensorPin) == LOW) {
digitalWrite(ledPin, HIGH);
} else {
digitalWrite(ledPin, LOW);
}
delay(50);
}

🔹 Common Questions

❓ Short detection range?
Adjust potentiometers, check power, dark objects reduce range.

❓ Output always LOW?
Check EN pin grounded, no obstacle in range, adjust sensitivity.

❓ Line tracking?
Works but TCRT5000 is better for line tracking.

Specifications
Voltage: 3.3V – 5V

Current: 20mA

Range: 2-40cm adjustable

Output: TTL (0/1)

Angle: 35°

Interface: 4pin

Size: 45×11mm

Note: Manual measurement, allow 1‑3mm error. Colors may vary.