Bangle.js in an IoT project

Hi everyone,
i saw the video about using puck.js and raspberryPI with espruino Hub and i'm asking, is it possible to do the same with bangle.js, creating a custom server that stores data and also a custo app for bangle that takes that, obviously always having a connection?

Sorry if this is a stupid question but i'm new in IoT world and i'm trying to learn.

Hi! Yes, that's totally possible.

In fact the code itself should be pretty much identical between Puck.js and Bangle, with the only changes being in how you get the data from the sensors.

Perfect, that's a good news thank you @Gordon, but i have another question about the architecture, i saw that espruino hub is a bridge between BLE and MQTT, but i didn't understand if the protocol uded is actually a BLE or MQTT? I'll try to explain well, i have to think the data flow between devices as a BLE protocol and manage them in that way, or MQTT?

In the simplest form EspruinoHub just relays Bluetooth LE advertising packets over MQTT: https://github.com/espruino/EspruinoHub#mqtt-bridge - that's what I'd suggest you use for any kind of monitoring application.

So it's not really a protocol per se - you're just getting notified via MQTT whenever any advertising data is received.

Actually making a connection is more complex, but I think the link above describes it pretty well.

Oooook i got it, Thank you very much @Gordon, always available and clear. Now i'm going to work on this project.