WSAL17188 – AlphaBot2/en

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 AlphaBot2 kit comprises a base board and an adapter board (Arduino, Raspberry Pi, or Raspberry Pi Zero W). It enables line tracking, obstacle avoidance, ultrasonic ranging, infrared remote control, and video surveillance. The guide covers assembly, example programs, and safety precautions.

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Technical overview

Two main components: the AlphaBot2 base board and a selectable adapter board (Ar, Pi, or PiZero).
The kit supports Arduino, Raspberry Pi 3B, and Raspberry Pi Zero W via their respective adapter boards.
Example programs include motor test, joystick direction, infrared remote control, ultrasonic obstacle avoidance, line tracking, and servo control.
For the Arduino variant, library files are copied into the Arduino IDE libraries folder; then verify the TRSensors option under File → Examples.
Serial monitoring is configured at a baud rate of 115200 to display measurement values and sensor outputs.
Line-tracking calibration: hold the car near the ground on a black line to capture minimum and maximum sensor values.
The black track width is 15 cm; a background that is too dark interferes with detection.
Infrared remote control uses keys 2, 8, 4, 6, and 5 for forward, backward, left, right, and stop; plus/minus adjusts speed.
Ultrasonic measurements may be inaccurate when the obstacle plane is angled relative to the car due to wave reflection.
The SG90 servo is entry-level; squeaking and heating arise from an inaccurate potentiometer setting after extended use.

Commands and examples – verify before use:

TRSensorExample
Run-Test
Joystick
IR
Infrared-Obstacle-Avoidance
Ultrasionc_Ranging
Ultrasonic-Obstacle-Avoidance
Ultrasionc-Infrared-Obstacle-Avoidance
Infrared-Line-Tracking

Notes and version constraints

The document contains placeholders such as {{{name5}}} and {{{userDefinedInfo}}}, indicating incomplete source data.
Some sections are version-sensitive: exact hardware configuration can vary by product variant.
The source explicitly notes that certain kits may not include all described components.
Safety note: excessively low battery voltage can cause permanent damage; power off and charge when voltage is too low.
If motor rotation direction is wrong, swap pins AIN1/AIN2 or BIN1/BIN2, or adjust them in the program.
Different infrared remotes have different key codes; the program must be modified accordingly.

Source and revision record

AlphaBot2 - Waveshare Wiki
Source revision: 80818
Captured: 2026-08-31T04:05:20+00:00
SHA-256: 4940f689a9445a42998e5fd6b76889ab8898e957114c13ad1126ed9b71309ceb