HC-SR04P Low-Voltage UltraSonic Distance Sensor

HC-SR04P Ultrasonic Distance Sensor

This new version of the ubiquitous HC-SR04 has been engineered to work down to 3V making it absolutely ideal to connect directly to MicroBit or Raspberry Pi GPIO pins using the 3.3V power. Works identically to the standard product although you will notice a little drop off of maximum distance when using lower voltages.

This differs mechanically from the HC-SR04 and HC-SR04+ in that the connection pins protrude forward from the PCB instead of backward.

• Operating voltage: 3.0V to 5.5V
• Operating current: <2mA
• Sensor angle: 15 degrees
• Range: 2cm - 450cm
• Resolution: 0.3cm
• Output a 10us HIGH signal to Trigger input to start the detection
• Measure the length of pulse received on Echo output to determine distance
• Distance is pulse length * speed of sound (340M / S)) / 2