You are reading a single comment by @Gordon and its replies.
Click here to read the full conversation.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Gordon
This might help: https://www.espruino.com/Interfacing
However trying to emulate a Bangle first (if you're doing connections) might end up sucking up a bunch of time. If you want to debug a Bluetooth LE UART connection I'd suggest getting another Espruino device that you can connect a non-bluetooth UART to - then you can connect over serial and see what's happening on Bluetooth.
Official MDBT42 and Pixl.js boards are easy to add a USB-TTL converter to but don't work out of the box, or the cheapest/easiest option is to just get a micro:bit 2, which there are Espruino builds for