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Microsoft MakeCode extension for use with micro:bit CreateAI

This extension is leveraged by micro:bit CreateAI which creates suitable blocks based on the machine learning model you build in the app. It is not useful separate from micro:bit CreateAI.

Building locally

Ensure you have the required toolchain to build for V1 and V2 (arm-none-eabi-gcc, python, yotta, cmake, ninja, srec_cat) or docker.

git clone https://github.com/microbit-foundation/pxt-microbit-ml
cd pxt-microbit-ml
npm install pxt --no-save
npx pxt target microbit --no-save
npx pxt install
PXT_FORCE_LOCAL=1 PXT_NODOCKER=1 npx pxt

For the V1 build Yotta can hit the GitHub rate limits quite easily if the project is built from a clean state more than once. A V2-only build can be performed with the PXT_COMPILE_SWITCHES=csv---mbcodal environmental variable.

PXT_FORCE_LOCAL=1 PXT_NODOCKER=1 PXT_COMPILE_SWITCHES=csv---mbcodal npx pxt

Build flags

Model predictions per second

By default the model will run every 250 ms, to change this value the ML_INFERENCE_PERIOD_MS config can be modified.

{
  "yotta": {
    "config": {
      "ML_INFERENCE_PERIOD_MS": 250
    }
  }
}

Debug messages

To enable debug print from this extension, add the following into your pxt.json file:

{
  "yotta": {
    "config": {
      "ML_DEBUG_PRINT": 1
    }
  }
}

License

This software made available under the MIT open source license.

SPDX-License-Identifier: MIT

Code of Conduct

Trust, partnership, simplicity and passion are our core values we live and breathe in our daily work life and within our projects. Our open-source projects are no exception. We have an active community which spans the globe and we welcome and encourage participation and contributions to our projects by everyone. We work to foster a positive, open, inclusive and supportive environment and trust that our community respects the micro:bit code of conduct. Please see our code of conduct which outlines our expectations for all those that participate in our community and details on how to report any concerns and what would happen should breaches occur.