As I said, I would not risk using the power supply that is is used to power the phones.
I know, maybe I could lay another wire, just to be able to power shelly. I thought if shelly uni would do the job, because it is smaller than regular shellys.
Great Post !
I donāt see a problem using the phone power supply as shelly doesnāt require much. Under 1.2 wats
it can be operated with 24 to 30 VDC., and it is optoisolated. so no risk for the target circuit.
The button may have 4 legs (NC/NO) you need to identify the Normal Open
You might mean that a small electric tester with a mini grabber lead.
You can use the shelly PM1 as wifi enable button to open the door from your companion ap or with an automation
You still do not have audio/video feedback.
I added a unifi camera so I can have video feedback on the companion app but not audio feedback yet
refs:
https://www.amazon.ca/DIGIFLEX-Testing-Digital-Multimeter-Voltmeter/dp/B003NEGZLS/ref=asc_df_B003NEGZLS/
https://www.amazon.ca/Multimeter-Electrical-Silicone-Green-Yellow/dp/B07NXTT8RW/
Loving this post, exactly what Iām trying to put together!
Next step I actually aim at is to get the speaker signal and put it to the ESP8266 ADC pinā¦ hoping I would be able to hear on my phone whenever someone rings!
Did anyone even consider implementing this? Iām trying to wrap my head around that project, but Iām strugglingā¦!
it works ?