I’ve been looking at radiator fans, the ones that go under your radiator and trigger on a mechanical temperature switch to activate its fans to circulate the warm air.
It looks expensive for 3 fans, a few magnets and a thermo switch.
I couldn’t find anything in search, but was wondering if anyone had DIY’d something similar with something like an ESP32 which could also double as a presence sensor or BT extender or even an assistant listener in HA.
Yes, you only need Esp board, power supply and common 4-wire fans to build it.
I wonder as well, but more specific I’d love to know whether there’s a way to make a zigbee controllable variant
Plug it in to a ZigBee smart plug?
Perhaps this:
Sorry, its german.
Sorry it’s Dutch
It’s pretty easy, you can use tasmota or zigbee. I would choose tasmota or ESPhome.
I really like this.
One thing that put me off the shop bought or even a 3d printed version was the thought of plastic off-gassing being actively blown through the room.
Making it with wood as the frame makes a lot more sense.