Connecting the Ultrasonic Sensor to the Micro:bit

I have connected a HC-SR04 ultrasonic sensor to the BBC micro:bit. An ultrasonic sensor is a device that can measure by emitting sound waves.

1. An ultrasonic sensor
2. A BBC micro:bit
3. Jumper wires x4 (male to female)
4. Alligator clips or Crocodile clips (optional)

There are 4 pins on the ultrasonic sensor. VCC, TRIG, ECHO, and GND. Use your jumper wires.

Connect the VCC pin on the sensor to the 3V pin on the micro:bit.

Connect the GND pin on the sensor to the GND pin on the micro:bit

Connect the TRIG pin on the sensor to pin 0 on the micro:bit

Connect the ECHO pin on the sensor to pin 1 on the micro:bit

This is the script for it to actually work. You can get the black block by adding the sonar extension in extensions.

The forever loop with the if / else senses if the distance is lower or equal to 6cm.

Note: Set the radio group to 1 for the next step to work.

Here is the hex file.

If you have another micro:bit, download this code to it.

If you want to use alligator clips, connect the male end (rod) of the jumper wires to each of the alligator/crocodile clips.