12V Wifi (MQTT) Relay with Termperature - itead Sonoff, shelly?

Hardware Home Automation
1

I know about the iTead Sonoff, and the Sonoff With temperature and humidity, but these operate on 110-240v AC. Does anyone know similar but for controlling 12v DC?

Currently I have a raspberry pi, that among other things, has a dht22 sensor and a mosfet switch where across various topics based on temp reported the mosfet switch is told to turn on two fans that cool my network stack.

While working, it looks a little ugly, and the scripts on the pi sometimes don’t come back up upon restart.

Now i could, with a 12v - 5v volt converted, mosfet switch, d1 mini, dht22 build one with the homie framework, but I’m not great at getting these things in enclosures in a nice neat package…hence my question.

2

Not what you asked for - but may do.
Here’s a Sonoff hack, which allows the Sonoff to remain powered by mains but switch DC loads.

This is more like you wanted

3

Or this (found it off that link you posted)

But then it’s a matter of digging into the tasmota firmware seeing if I can add DHT.h for reading.

4

Cheap as chips to try … but you said you wanted an enclosure :wink:

5

Sonoff actually makes a 5/12v module.

This one https://www.itead.cc/smart-home/inching-self-locking-wifi-wireless-switch.html

Or sonoff sv. They sell a plastic box also if you want enclosure.

6

Yeah I saw those, but thoughts on adding a temp sensor to it?

This video https://youtu.be/8mz5sCAvDAY from about 27 mins covers sensors and at 38 has tasmota…it’s certainly looks like it might be possible. I might have to get a couple to okay.

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