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2026-09-05T22:27:18Z

Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex

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'''Documentation notice:''' This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

== Summary ==
The RPi Motor Driver Board (Waveshare) is a Raspberry Pi expansion board for driving DC and stepper motors. It controls two motors via pins M1–M4, while PWMA/PWMB enable or disable the PWM outputs. The module suits basic robotics projects with remote control.

== Related products at JW Tech ==
* [https://shop.jw-tech.eu/p/WSAL11820 WSAL11820 – RPi Motor Driver Board]

== Technical overview ==
* DC/stepper motor drive via four outputs: M1, M2 to the right motor; M3, M4 to the left motor.
* PWMA and PWMB are PWM-enable pins; only when high do M1–M4 emit PWM signals, controlling speed.
* Control logic: forward = M1/M3 high, backward = M2/M4 high, turn right = right motor forward only, turn left = left motor forward only, stop = all low.
* Infrared remote example: NEC protocol received on pin 18 and decoded; keys 2/8/4/6/5 map to straight/back/right/left/stop; “–” and “+” adjust speed.
* Demo code is downloaded with wget, unpacked, and launched with Python; if errors occur, install the required library manually.
* On Bullseye OS: use “apt” instead of “apt-get”; only Python 3 is supported.
* Chassis and camera are not included and must be purchased separately.

'''Commands and examples – verify before use:'''
<syntaxhighlight lang="text">
sudo apt-get install p7zip
wget https://files.waveshare.com/upload/9/96/RPi-Motor-Driver-Board-Demo-Code.tar.gz
tar xzvf RPi-Motor-Driver-Board-Demo-Code.tar.gz
sudo chmod 777 -R RPi-Motor-Driver-Board-Demo-Code
cd ~/RPi-Motor-Driver-Board-Demo-Code/python
sudo python motor.py
</syntaxhighlight>

== Notes and version constraints ==
* The exact hardware revision of the board is not stated in the source; wiring may differ by revision.
* No supply-voltage, maximum current draw, or protection-circuit details are provided – these values need confirmation before operation.
* The example requires a separate chassis and camera; without them the demo will not work fully.
* If the example throws errors, the required Python library must be installed manually; the exact library name is not clearly specified in the source.
* Key mapping on infrared remotes varies by device; program adjustments may be necessary.

== Source and revision record ==
* [https://www.waveshare.com/wiki/RPi_Motor_Driver_Board RPi Motor Driver Board - Waveshare Wiki]
* Source revision: 69311
* Captured: 2026-08-30T03:09:38+00:00
* SHA-256: <code>f98aca6ff87d2a3f0ab4d00578a8454cc102634d332644dbf42bfe4e5a3cbd4a</code>

WSAL11820 – RPi Motor Driver Board/en - Versionsgeschichte

JWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex