Motor Driver for micro:bit
| ||
Introduction
This is a motor driver module designed for the BBC micro:bit. Can drive 2 DC motots and 3 steering gears.
Features
- micro: bit edge connector, directly pluggable.
- Onboard connectors for two DC motors and three steering gears.
- 5V regulator, supports 6V~12V input (VIN terminal). Output current up to 3A.
- Onboard connectors for DC motor and standard steering gear.
- Comes with developing resources and manual.
Specification
- Power input range:6V~12V
- Gear voltage: 5V
- Logic voltage: 3.3V
- Driver: TB6612FNG
- Dimension: 65mm x 36mm
- Holes size: 3.0mm
Pinouts
| PIN | Description |
|---|---|
| Vcc | Power (6~12V) |
| GND | Ground |
| A1 | positive pole of motor A |
| A2 | negative pole of motor A |
| B1 | positive pole of motor B |
| B2 | negative pole of motor B |
| P0 | control pin P0 of steering gear |
| P1 | control pin P1 of steering gear |
| P2 | control pin P2 of steering gear |
Programming Guide
Micro:bit has variety of programming methods like mbed, micropython, typescript, and other programming methods, as well as code online websites which are abundant.
The official recommendation is two programming methods: typescript and micropython. Typescript is the graphical programming language.
Typescript
Typescript is a kind of graphical programming, its website is: https://makecode.microbit.org/#
- Open a browser and input the next URL
- Add Package
You can clone the package of Motor Driver HAT for micro; bit from Github. Click More..-> Add Package, then copy the URL to the Edittext. https://github.com/waveshare/pxt-Motor
Control Motor Rotation
Control two motors at the same time, and set their rotating direction and speed
Stop motor when button A is pressed
Control Servo
Control servo to rotate at a certain angle.
Other blocks
There are also some blocks in Advanced->More that can be used to control servo
Python
You can get more information about python programming of micro: bit on this web page: https://microbit-micropython.readthedocs.io/en/latest/index.html
We provide python codes for this module, you can download it and have a try.
Unzip the demo code you download and open the file motor.py which is under the python directory with software mu.
Initiailing
Control Motor
Stop
Cotnrol Servo
Control servo to rotate in certain angle
Temp=angle/2+25 is the duty ratio, its range is 0~1023.
Example:
Motor1 moves forward, Motor2 moves backward, servo1 rotates 50 degrees, and servo2 rotates 150 degrees.
Resources
Documentation
Datasheet
Demo Code
Software
Support
Technical Support
If you need technical support or have any feedback/review, please click the Submit Now button to submit a ticket, Our support team will check and reply to you within 1 to 2 working days. Please be patient as we make every effort to help you to resolve the issue.
Working Time: 9 AM - 6 PM GMT+8 (Monday to Friday)