Help with doorbell sensing using shelly It’s hard to hear…
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Help with doorbell sensing using shelly
It’s hard to hear my doorbell when I’m working in the garage, so I thought I’d try and tie the doorbell into home assistant so it could ring a secondary chime in the garage but I’m struggling to successfully sense the doorbell press.
I picked up a second chime and doorbell transformer and started with a Shelly Uni Plus, since it’s the only Shelly that can natively run off the nominal 16VAC (actually 20VAC) of the doorbell transformer (tying into the 120VAC in the wall behind the transformer is possible, but would be messy). I got it up and running, but somewhere in my bench testing of things I let out all the blue smoke in the device and burned it out. I’m not sure what I did, but I moved on to a Shelly 1 Gen 4 that I had and an AC-DC buck converter from amazon https://www.amazon.com/dp/B0BB8YWBHX . That gave me 12VDC to power the Shelly and I put a 24VAC relay ( https://www.amazon.com/dp/B09377N7MQ ) across the chime to ground the SW input on the Shelly when the doorbell button was pressed.
That all worked on the bench and I thought I was in business. While I was at it, I routed the 16VAC through the dry contact relay to the back door input on the bell so I could have home assistant ring that for other notifications - possibly a future back doorbell. However when I actually wired it into the existing doorbell circuit (which has the transformer in the middle of the circuit in a closet and wires going out to the doorbell and chime) it didn’t work at all. The shelly is never registering the doorbell press, even though the relay is triggering (if only briefly) on the doorbell push. Holding the doorbell, which holds the relay open, doesn’t change it. Strangely however, I tied some leads into the doorbell wires right at the transformer where the relay and shelly are for troubleshooting them and touching them together does sometimes trigger the switch input, particularly if I hold them for a moment.
Is there some setting I have wrong on the relay (the switch input is configured as a detached button)? Do I need a faster acting relay? A completely different sensing scheme? I know I could just tie the doorbell directly into the switch input on the shelly and then have the shelly also drive the chime directly, but that goes against my general home automation philosophy of the house should still work right even when all the automation breaks. Plus I’d then need a second relay to drive the second chime channel.
Wiring Diagram https://preview.redd.it/j623elw0opdh1.jpg?width=3557&format=pjpg&auto=webp&s=a7d16f5911a38842507ee288baf1f755b0c78646
Thanks for any advice or assistance.
#home
source
It’s hard to hear my doorbell when I’m working in the garage, so I thought I’d try and tie the doorbell into home assistant so it could ring a secondary chime in the garage but I’m struggling to successfully sense the doorbell press.
I picked up a second chime and doorbell transformer and started with a Shelly Uni Plus, since it’s the only Shelly that can natively run off the nominal 16VAC (actually 20VAC) of the doorbell transformer (tying into the 120VAC in the wall behind the transformer is possible, but would be messy). I got it up and running, but somewhere in my bench testing of things I let out all the blue smoke in the device and burned it out. I’m not sure what I did, but I moved on to a Shelly 1 Gen 4 that I had and an AC-DC buck converter from amazon https://www.amazon.com/dp/B0BB8YWBHX . That gave me 12VDC to power the Shelly and I put a 24VAC relay ( https://www.amazon.com/dp/B09377N7MQ ) across the chime to ground the SW input on the Shelly when the doorbell button was pressed.
That all worked on the bench and I thought I was in business. While I was at it, I routed the 16VAC through the dry contact relay to the back door input on the bell so I could have home assistant ring that for other notifications - possibly a future back doorbell. However when I actually wired it into the existing doorbell circuit (which has the transformer in the middle of the circuit in a closet and wires going out to the doorbell and chime) it didn’t work at all. The shelly is never registering the doorbell press, even though the relay is triggering (if only briefly) on the doorbell push. Holding the doorbell, which holds the relay open, doesn’t change it. Strangely however, I tied some leads into the doorbell wires right at the transformer where the relay and shelly are for troubleshooting them and touching them together does sometimes trigger the switch input, particularly if I hold them for a moment.
Is there some setting I have wrong on the relay (the switch input is configured as a detached button)? Do I need a faster acting relay? A completely different sensing scheme? I know I could just tie the doorbell directly into the switch input on the shelly and then have the shelly also drive the chime directly, but that goes against my general home automation philosophy of the house should still work right even when all the automation breaks. Plus I’d then need a second relay to drive the second chime channel.
Wiring Diagram https://preview.redd.it/j623elw0opdh1.jpg?width=3557&format=pjpg&auto=webp&s=a7d16f5911a38842507ee288baf1f755b0c78646
Thanks for any advice or assistance.
#home
source
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