I’ve got a secret door I’m trying to wire up to my smart things. Here’s the vision:
I punch in a code on the payphone I have mounted on the wall, and the bookcase swings open.
Here’s what I’ve got so far:
- The bookcase door is being held close by a pretty strong electromagnetic latch (running on 12V power), connected to a regular Z-Wave outlet that I can turn on and off from my phone.
- I used IFTTT to make sure the switch always stays on, which basically makes it act like a momentary switch so I can toggle it, and then shut the door and have it latch.
- The payphone is mounted on the wall. It does nothing (but look awesome) so far.
Here’s the parts I’m looking for input on:
I need to connect the latch to a UPS, so if the power cuts out the door doesn’t swing open. I have a UPS for 12V devices, and I thought that it along with an LFM-20 wired up instead of the SmartPower module would do it, but after getting the LFM-20, I realized it needs 120V to power it. So I think I need a more substantial UPS, right?
The main mystery is how I’m going to get the keypad of the payphone to talk to the zwave switch. I was thinking of getting a Raspberry Pi along with a ZWave module, but past that I’m out of my league knowledge wise, here. Can anyone offer any guidance on this childhood dream being realized?