Sonar:bit for micro:bit Ultrasonic Sensor Distance Measuring 3V/5V
Sonar:bit is an ultrasonic module with 3-5V working voltage. It is available to be used to 3.3V or 5V micro-controller system. With only one 3-wire(GVS) cable, it can work properly. Compared to the normal 4-wire ultrasonic module, it has saved one IO port. The measurement range of sonar:bit is 4cm-400cm. It can output stable and accurate measurement data with ±1cm tolerance only. You can use this module to occasions like short-distance measurement, smart cars, robots, micro:bit and arduino teaching, etc..
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Features
- Input voltage:3V~5V
- Enable to drive micro:bit or arduino directly.
- Standard 3-wire GVS connecotr, which occupies 1 IO port only.
Definition of Pins
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Introduction of Major Components
Transmitter
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Transmitter is used to send ultrasonic signals.
Receiver
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Receiver is for collecting ultrasonic signals.
MCU
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This is the master chip of sonar:bit.
Chip for Sending Signal
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This chip is used to drive the transmitter to send out ultrasonic signals.
Chip for Receiving Signal
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This chip is used to receive and process ultrasonic echo signals as well as give feedbacks to the master chip.
G-V-S Port
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G-V-S port allows outer devices control.
Quick Start
Hardware Connection
Connect sonar:bit to P2 port on sensor:bit and connect micro:bit to your computer.
Once completed, you can see the picture below:
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Programming
Click to open Makecode online editor.
Write your program to assign the returned value of P2 to variable distance and display it on micro:bit screen.
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You can see the whole program from the link here: https://makecode.microbit.org/_b7JL2Yd3q3Km
Result
We can see the distance between sonar:bit and the object is displayed on micro:bit in real time. The unit is centimeter.
Application
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Parameter
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Dimension
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Packing List
- 1 x Sonar:bit
- 1 x GVS Jumper Cable
Document
WARNING
