• Well, Web Bluetooth should be coming to windows quite soon - next few months hopefully (status here)

    However you can run the Web IDE under Node.js, in which case it'll be able to access BLE devices directly. Once you have node.js installed, there's info on it here

    You can also use the plain command-line application (also from node.js): https://github.com/espruino/EspruinoTool­s

    The command-line one is probably the best place to get started - the IDE uses Electron under node.js, and it can be a bit picky about modules that need compiling (which you need to be able to access BLE).

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