Hi, I've ported MicroPython and some handy Python libraries to Apache Mynewt; there's a bit more to it but collectively this development effort is called BubblePy.
The most recent BubblePy Bluetooth LE GATT example I'd like to share with you demos the control of a Pimoroni Blinkt connected to an Arduino Primo, via BluetoothLE. The UI is browser based and communicates with the BLE device using Web Bluetooth. You can view the source of the Blinkt demo, here: https://github.com/TheBubbleworks/BubblePy_Demo_Blinkt_BLE There are links to further BubblePy info & examples in the README of that repo. Of note, there are examples of custom BluetoothLE Physical Web beacons and GATT services that run on the BBC micro:bit (a 16kB RAM nRF51) All the best Wayne
