pxt build erro 'program too big'

[elecfreaks1]

I’ve encountered an issue where my program exceeds the memory capacity of the micro:bit v1, causing the pxt build command to fail with the message: "program too big by xxx bytes!" How can I configure my project to exclusively target the micro:bit v2?

It seems there is insufficient space left on the micro:bit v1 to fully implement our robot's functionality. We have updated our Cutebot Pro and TPbot products and are now adapting them to work with this robot library. However, after implementing 90% of the required functionality, we’ve run out of space—despite our code being highly optimized and under 200 lines.

[eanders-ms]

Hi @elecfreaks1. To configure your project to target only the micro:bit v2, add this to your pxt.json:

    "disablesVariants": [
        "mbdal"
    ],

This will disable the micro:bit v1 ("DAL") build. This setting isn’t well-documented (sorry about that!), but here's a working example, for reference: https://github.com/microbit-apps/display-shield/blob/d280d70e45139a420eec4d73a786f297dfb029ab/pxt.json#L72