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2026-09-05T22:35:26Z

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 ==
Technical overview of the AlphaBot2 robot kit for Raspberry Pi 3B/3B+/4B. Covers hardware assembly, software setup (WiFi, PuTTY, interfaces), and example programs for motors, joystick, IR remote, obstacle avoidance, ultrasonic ranging, RGB LEDs, line following, and servo control.

== Related products at JW Tech ==
* [https://shop.jw-tech.eu/p/WSAL12913 WSAL12913 – AlphaBot2 robot building kit for Raspberry Pi 3B/3B+/4B (no Pi)]
* [https://shop.jw-tech.eu/p/WSAL14803 WSAL14803 – AlphaBot2 robot building kit for Raspberry Pi 3 Model B+]

== Technical overview ==
* The kit comprises the AlphaBot2-Base chassis and the AlphaBot2-Pi adapter board; assembly is snap-fit with no soldering or wiring.
* The adapter board includes a TB6612FNG dual H-bridge motor driver, an LM2596 5 V regulator, a TLC1543 10-bit ADC, and a PCA9685 servo controller.
* The chassis uses N20 micro gear motors at 1:30 reduction, rubber wheels (42 mm diameter, 19 mm width), and omni-direction wheels.
* Remote access is set up via WiFi, checking the IP address with ifconfig, then using PuTTY with the default credentials pi/raspberry.
* Interfaces such as camera, SPI, I2C, and UART are enabled through raspi-config; a reboot may be required afterward.
* Example programs reside in ~/AlphaBot2/python and are run with sudo python <file>.py.
* The IR remote controls forward (key 2), backward (8), left (4), right (6), stop (5); +/− adjusts speed and EQ restores the default.
* The five IR sensors report values depending on surface: white KT board ~800–900, in air 0–100, on black line 100–300.
* RGB LEDs (WS2812B) are driven via the rpi_ws281x module; if colors display incorrectly, add hdmi_force_hotplug=1 and hdmi_force_edid_audio=1 to /boot/config.txt.

'''Commands and examples – verify before use:'''
<syntaxhighlight lang="text">
sudo raspi-config
sudo reboot
sudo apt-get update
sudo apt-get install ttf-wqy-zenhei
sudo apt-get install python-pip
sudo pip install RPi.GPIO
sudo pip install spidev
sudo apt-get install python-smbus
sudo apt-get install python-serial
sudo pip install rpi_ws281x
cd ~/AlphaBot2/python
sudo python AlphaBot2.py
sudo python Joystick.py
sudo python IRremote.py
sudo python Infrared_Obstacle_Avoidance.py
sudo python Ultrasonic_Ranging.py
sudo python TRSensors.py
sudo python Line_Follow.py
sudo python PCA9685.py
sudo python ws2812.py
</syntaxhighlight>

== Notes and version constraints ==
* IR remote key mapping may vary by remote model; adjust the program accordingly.
* The ultrasonic sensor is not included in the Pi 3B kit due to space constraints; the feature is only available if added separately.
* If the wheels run in the wrong direction, swap the pin settings ain1/ain2 or bin1/bin2 in AlphaBot2.py.
* Enabling DMA-based RGB LED channels can affect audio output; adding hdmi_force_* lines may render the headphone jack unavailable.
* Bluetooth remote control requires a paired device and correct rfcomm configuration; enable Bluetooth on the Pi and set it discoverable if connection issues occur.

== Source and revision record ==
* [https://www.waveshare.com/wiki/AlphaBot2-Pi AlphaBot2-Pi - Waveshare Wiki]
* Source revision: 89124
* Captured: 2026-08-30T03:36:22+00:00
* SHA-256: <code>283b63d5be9f1b11d05ff2c8dfc7120ed2fea4e40f10670a8d9104678a3417f6</code>

WSAL12913 – AlphaBot2-Pi/en - Versionsgeschichte

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