I've just recently started using the Shelly 1 but I have successfully set up a dozen of them for various purposes and connected them to both the Shelly app/cloud and Home Assistant.
I don't know what voltage you have there - I assume 110-240VAC.
The wiring looks good to me as long as your voltmeter shows the correct voltage between the red and the blue wires going into the Shelly and match how the voltage jumpers are set.
Cheers,
Vilmundur
I just received my first Shellys and was hoping to use the Shelly 1 with temperature add-on to control beer fermentation temperature using a cooler.
What I want is to change the target temperature occasionally (at most one or two times a day). That is easy to do with the Shelly by using a http call to change the temperature thresholds but the problem is that I also want a delay of D seconds before turning the compressor on to start the cooling cycle.
I have looked at discussions in this forum like output delayed but they depend on a http call to trigger the device each time. I don't want to do that because the cooling/not-cooling cycle needs to be independent of any external services or the workings of the Wi-Fi. If there is a temporary failure in turning the cooling on/off it could ruin the batch of beer. So I want the setup to be as self reliant as possible.
Since the Shelly doesn't have a configurable delay before turning on/off, I have come up with a solution that requires two additional Shellys shown in the picture. There are two parameters: T as the target temperature +/- 0.5 and D as the turn-on delay.
Brew - Shelly Refrigerator temperature controller with turn on delay_autoscaled.jpg
It works like this:
When temperature is below the threshold, A goes off so C is off regardless of B.
When temperature is above the threshold, A goes on which turns B off because the switch settings of the Delay are reversed. After the delay time has passed, it turns B on which feeds into the Relay and turns the compressor on. This state will persist until the temperature drops below the threshold again.
I have tested this with a DS18B20 probe using a light bulb as the load and it seems to work fine. Next step is to put it in action for the fermentation fridge.
I would be happy if someone could show me how to do this using fewer Shellys or tell me if there is a problem with this setup.
Hint to the developers: If the Shelly would support a delay before turning on or off (which looks like a simple feature), that would be perfect and would make the Shelly a very cost effect alternative to products like Inkbird for temperature control.
