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Cake day: September 30th, 2025

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  • I don’t use the home assistant integration, but my understanding is you have to configure WiFi and an MQTT server on a node at your house with the meshtastic app (I probably wouldn’t use a T-Watch for that, something with a longer external antenna would be better), and point it to your home assistant’s MQTT server. Then there’s some more configuration to make home assistant send messages and what to do when it receives messages.

    Most meshtastic compatible devices do have a USB port that presents as a serial interface though, so there’s probably an unofficial integration that makes use of that too.


  • So it can do voice calls?

    Not over meshtastic, and not with the meshtastic firmware. The T-Watches have WiFi & Bluetooth, and are designed to be programmable. So the speaker and microphone could be used by custom firmware to do whatever, like talk over WiFi or answer calls on your phone.

    Was I right about just getting two watches for communication?

    If all you need is simple text based messaging then yep.

    Is there a good crash course on understanding this stuff?

    There’s quite a few resources and videos on meshtastic. For the T-Watches themselves, AFAIK not really.



  • it has a camera and microphone, so can you actually do video calls?

    I don’t think any of the T-Watches have cameras. But you’re right about the meshtastic bandwidth, it’s more for some simple messages.

    So if the network isn’t great here I assume I can put up my own node.

    Yep, and a node is just another LoRa device, like the T-Watch. If it’s just near your house, it should work great. My Wio Tracker L1 picks up a repeater on the other side my suburb, and that gives me some crazy range.

    It doesn’t sound like you do, but if you need intercity range, LoRaWAN might also be worth looking into. In Queensland, many city councils (Brisbane, Gold Coast, Moreton Bay) have their own LoRaWAN networks that peer with The Things Network, and you can integrate it with Home Assistant using an integration, or my preferred way is through MQTT. You would probably have to write the firmware yourself with this option though.