ESP8266 Community Forum

- Wed Sep 22, 2021 11:05 am #92414 I have a "multi-button bell" project with a single bell and one bell button in 5 rooms plus the doorbell.



To start I've adapted the ESPhome code from this excellent project - https://frenck.dev/diy-smart-doorbell-f ... -2-dollar/



How best to detect button presses given this setup?

How can it be adapted to work best?



But the big difference is that the bell presses need some voltage and current through them to fire the indicators (solenoid hits the flag frame). +8V goes into the board goes round the circuit and exits to the bell unit.



The original bell needs 8V to work and I've had a 8V DIN-mounted feed from the CU into the bell unit. I've soldered up a buck step-down converter from 8V-5V.

- Fri Sep 24, 2021 12:30 am #92433 your post would be much more informative if pictures were included ...

- Sat Sep 25, 2021 4:58 pm #92453 This is my current circuit diagram.

* can the step downs and step up converters work fine in this circuit or is it best to add some kind of smoothers/regulators? (I'm not familiar with the lingo and what options are available).

* what component(s) - highlighted as the blue boxes with "?" - would permit the GPIOs to accurately detect when current flowed through to the indicator flags and the bell?

- Sat Sep 25, 2021 7:29 pm #92457 Images posted on your personal Google drive won't show for us here.
Please put them on this forum (using the "Upload attachment" tab in the "Post a reply" screen) or make your images public.

Also, please don't cross-post.

Assumption is the mother of all f*ckups. At least: that's what I'm assuming.