Category: Installation
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An awning that retracts itself in the wind: Ecowitt WS90 and Shelly 2PM
The station measures the gust on your terrace and the 2PM retracts the awning. The threshold is not guessed: your awning’s wind class gives it. And what can fail, before you buy.
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Tank empty or full, alert on your phone: a float switch and a Shelly Plus Uni
The float goes straight to one of the Plus Uni’s inputs, at low voltage. One float gives one alert; empty and full need two, and the Plus Uni has an input for each.
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Two independent lights with a Shelly Pro 2, with the wall switch still in charge
Two genuinely separate channels, Ethernet as well as wifi, and the attached mode that keeps the lights working when the internet does not.
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One Shelly Pro 3 can run 230 V AC and 24 V DC at once
Its relays are dry contacts, so each channel can carry a different voltage. With two limits that are not negotiable: 30 V DC and 240 V AC.
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BLU Remote Control ZB with a Shelly 2PM Gen4: blinds with no hub and no cloud
The 2PM Gen4 receives the remote itself and the button layout assigns itself. Opening and closing needs no scene at all.
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Configuring the Shelly BLU Wall Switch 4: why the buttons do nothing
All four buttons show in the app, you can see the click, and the scene does nothing. Two pieces are missing, and neither is where you are looking.
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Automating a garage door from your phone
The control board already has 12 V and a button input waiting for a contact. The remote keeps working, and momentary mode is not optional.
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Opening the street door from your phone with a Shelly
The 1PM Mini will not do: it gives 230 V instead of a dry contact. And you wire to the door release, not the button. Analogue yes, digital bus no.
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How to install an RC snubber, step by step
Where the snubber goes and why distance to the motor decides everything, plus the wiring mistake that trades one fault for another.
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How to install a bypass, step by step
Exactly where the bypass goes, why it belongs in the light fitting rather than the switch box, and how to confirm it worked.