The HW-488 Infrared Obstacle Avoidance IR Sensor Module is a reliable, budget-friendly sensor for robotics, automation, and DIY electronics projects. With a detection range of 2–40 cm, it helps robots and smart devices avoid obstacles effectively. It features an active LOW TTL output, making it easy to integrate with Arduino, Raspberry Pi, or any other microcontroller. The module operates within 3–6V, offering flexibility across different development boards. Its onboard status LED provides instant feedback, while dual potentiometers allow fine-tuning of sensitivity and frequency. The HW-488 is compact, lightweight, and easy to use, making it ideal for line-following robots, smart cars, and collision avoidance systems. Featured By RoboticsBD.
Product Images are shown for illustrative purposes only and may differ from the actual product.
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Features:
Adjustable detection range from 2 cm to 40 cm for flexible obstacle sensing.
Compatible with Arduino, Raspberry Pi, and most microcontrollers.
Active LOW TTL signal output with clear status LED indication.
Dual potentiometer adjustment for sensitivity and operating frequency.
Compact and lightweight module, easy to integrate into robotics projects.
Enable/disable function through onboard jumper or EN pin.
Operates on 3V–6V, ensuring wide compatibility.
Reliable obstacle detection with smooth reflective surfaces.
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Applications:
Obstacle avoidance in robotics and autonomous vehicles.
Line-following robots and smart car navigation.
DIY electronic projects requiring distance sensing.
Security and automation systems for detecting nearby objects.
Interactive electronics and educational robotics kits.
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| General Specifications |
| Model | HW-488 Infrared Obstacle Sensor |
| Detection Distance | 2 – 40 cm |
| Operating Voltage | 3V – 6V |
| Output Signal | TTL level, Active LOW |
| IO Interface | 4-pin (+, -, S, EN) |
| Effective Angle | 35° |
| Adjustment | Dual potentiometers (range & frequency) |
| Frequency Centered | 38 kHz (555 timer based) |
| Indicator | Onboard status LED |
| Enable Pin | EN (active LOW enable) |
| Shipment Weight | 0.010 kg |
| Shipment Dimensions | 12 × 8 × 3 cm |
Please allow 5% measuring deviation due to manual measurement.
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Documentation:
Sample Code:
int detector = 8; // define the obstacle avoidance sensor interface
int val ;
void setup ()
{
pinMode(13, OUTPUT); // Built in Arduino LED
digitalWrite (13, LOW);
pinMode (detector, INPUT) ;// define the obstacle avoidance sensor output interface
}
void loop ()
{
val = digitalRead (detector) ;
if (val == HIGH) // When the obstacle avoidance sensor detects a signal, LED flashes
{
digitalWrite (13, HIGH);
delay(100);
}
else
{
digitalWrite (13, LOW);
delay(100);
}
}
Package Includes:
1 x HW-488 Infrared Obstacle Avoidance IR Sensor Module
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