9. Sonar:bit

9.1. Introduction

• Sonar:bit is a 3-wire ultrasonic module with the working voltage between 3-5V. 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.

• It can connect to the Ring:bit with an expansion board.

9.2. Characteristics

• Input voltage:3V~5V and can be driven by micro:bit directly.

• Standard 3-wire GVS connecotr, which occupies 1 IO port only.

9.3. Parameter

Item	Parameter	Remark
Name	Ring:bit car v2 sonar:bit	-
SKU	EF04089	-
Working Voltage	DC 3-5V	-
Connection	3pin GVS connection	-
Output Signal	Simulation	-
Measuring Distance	4-400cm	-
Dimmension	40.60mm * 51.60mm	-
Net Weight	12g	-

9.4. Outlook

9.5. Quick to Start

Hardware Connection

• Connect the acrylic transition board to the back board with the rivets.

• Connect the Sonar:bit to the other side of the acrylic transition board with rivets.

• Connect the Sonar:bit to the Ring:bit breakout board with a 3-pin wire.

Software Programming

• Choose sonar:bit in makecode.

• Search ringbit in the dialogue box and click it to download it.

• Programme to measure the distance with ultrasonic in makecode on-line editor.

Links: https://makecode.microbit.org/_RVrYuDaT9acp

You can download it directly below:

Result

• The value measured by Sonar:bit is showing on the micro:bit.

9.6. About

case 10