Add obstacle detection to your robotics, electronics, or Arduino project. This module has been specially selected to work on the voltage range typically found with the Arduino range of products.
This economical sensor provides 2cm to 400cm of non-contact measurement functionality with a ranging accuracy that can reach up to 3mm. Each HC-SR04 module includes an ultrasonic transmitter, a receiver and a control circuit.
There are only four pins that you need to worry about on the HC-SR04: VCC, Trig, Echo and GND. VCC and GND are for power and Trig, Echo and GND are for your signal. GND is in with the signal set since it's needed for a baseline.
- Add obstacle detection to your robotics, electronics, or Arduino project.
- It can also be added to micro:bit projects provided a separate power supply is used.
- It provides 2cm to 400cm of non-contact measurement functionality
- It has ranging accuracy that can reach 3mm.
- Each HC-SR04 module includes an ultrasonic transmitter, a receiver and a control circuit.
- The pins are; VCC, Trig, Echo and GND
- 1 x HC-SR04 ultrasonic ranging sensor.
- Length: 45mm.
- Width: 20mm.
- Max Height: 16mm.
- Pin Pitch: 2.54mm
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Apologies for the delay in coming back to you the distance sensor works best from 5V so I would power that from 5V with the micro:bit pin reading that power with a chosen pin and ground but powering the micro:bit from 3V itself separately.
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