HC-SR04 Ultrasonic Distance Measurement Module
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$ 7.00
The HC-SR04 Ultrasonic Distance Measurement Module allows you to measure distances to objects or obstacles. Measurements can be displayed on a 3-digit LED screen and read via the serial pins on the module.
Note: The HC-SR04 ultrasonic sensor is not included.
Specifications:
- Microcontroller: Built-in high-performance STM8S103
- Display: Digital LED screen
- Data Output: Serial port available
- Effective Measurement Range: 3 cm – 400 cm
- Unit: cm
- Maximum Error: ~1%
- Operating Voltage: 5V
Interface Description:
- VCC, GND: 5V power supply
- 2.54mm White Socket: 5V power interface
- TX, RX: Serial port pins
- NRST, SWIN: STM8 programming port
Usage Notes:
- Distance can be displayed on both the LED screen and via serial output simultaneously.
- For digital display, connect the ultrasonic sensor directly and supply 5V power.
- For serial output, connect the sensor’s VCC, TX, RX, GND to a TTL USB module at 5V with a baud rate of 9600.
- The target object should be at least 0.5 m², relatively flat, and moderately reflective for accurate readings.
- Effective measurement is limited to 3–400 cm; readings outside this range may be invalid or show 000.
