Hardware
HC-SR04 Ultrasonic Distance Sensor
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Measures 2 cm to 4 m with about 3 mm resolution. The standard obstacle sensor.
৳110
In stock(60 available)
QuantityMax 20 per order
- Campus pickup free, Sylhet ৳60, nationwide ৳130 (free over ৳3,000)
- 7-day returns on unused items in original packaging
SKU HC-SR04-ULTRASONIC-SENSOR
Sends a 40 kHz burst and times the echo. Works on 5 V, needs two GPIO pins (trigger and echo), and is supported by every Arduino distance library. Used in the line-follower and obstacle-avoidance builds.