This Android Things sample demonstrates how to interface with a basic RGB led strip using the APA102 over SPI protocol.
- Android Things compatible board
- Android Studio 2.2+
- Rainbow Hat for Android Things or the following individual components:
- 1 APA102 compatible RGB Led strip
- jumper wires
If you have the Raspberry Pi Rainbow Hat for Android Things, just plug it onto your Raspberry Pi 3.
The 5v and GND from the Edison and Raspberry Pi 3 are sufficient for driving a few LEDs, connect these pins to the power pins on the APA102 connector.
On Android Studio, edit the MainActivity.java file and set the correct number
of LEDs in your LED strip (constant NUM_LEDS).
Then, click on the "Run" button.
If you prefer to run on the command line, from this repository's root directory, type
./gradlew apa102:installDebug
adb shell am start com.example.androidthings.driversamples/.MainActivityThe LEDs will blink in various patterns.
For a strip with more than a few LEDs, use an external power adapter for your board, or power the LED strip from an external power source.
Copyright 2016 The Android Open Source Project, Inc.
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