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This IR infrared obstacle avoidance sensor module is designed for detecting obstacles at a 2 to 40cm range, positioning it well for close-range robot navigation tasks like smart car obstacle avoidance and line tracking, where objects or lines need to be detected just ahead of or beneath a small robot chassis. It outputs a TTL-level digital signal, giving a clean, simple high or low reading rather than a raw analog value that would need further processing.
The module includes an IO interface with four lines (ground, power, signal and enable), and that dedicated enable (EN) terminal is a notable feature: it lets a microcontroller switch the sensor on or off directly, which is useful for saving power between readings or for multiplexing several sensors on a robot without needing multiple analog input pins.
Working voltage is DC 3.3V to 5V, and working current is 20mA, both modest figures suited to battery-powered robot projects. Sensitivity adjustment uses multi-resistance regulation, meaning the detection threshold can be tuned through an onboard adjustment, letting the sensor be dialed in for a specific surface reflectivity or ambient lighting condition. Effective detection angle is 35 degrees, giving a moderately narrow cone that helps avoid false triggers from objects positioned well off to either side.
Operating temperature is rated from -10C to +50C, and the module measures approximately 4.5cm by 1.1cm, small enough to mount at the front or underside of a small robot chassis without adding significant bulk.
Builders of small autonomous robots, line-following robots, or any Arduino-based obstacle-avoidance project will find this module's adjustable sensitivity, enable pin, and appropriate close-range detection distance a practical fit for typical robot-navigation tasks.
2 to 40cm.
A TTL-level digital signal.
It lets a microcontroller switch the sensor on or off directly.
Yes, through multi-resistance regulation.
DC 3.3V to 5V.
| Brand | Generic |
|---|---|
| Output Signal | Digital (Active Low) |
| Sensor Type | Infrared |
| Selling unit | PCS |
