After the updated version about 2 months ago, and some testing, it seems to work good with DC power, yet not that good (not at all) with AC power. I tried several different setups with different capacitors and found the solution. I was confident enough to order it with most components assembled on it ☺️
It looks awesome! Yet more important, it works straight away. The used IC is rated to ≥ 40 volt DC. The capacitor (placed next to the switch header) I have is rated at 35V, so more than enough for most doorbell systems. Once used for a DC system, this mentioned capacitor isn’t needed, as it’s only used for smoothing the AC voltage.
![](https://i2.wp.com/www.zuidwijk.com/wp-content/uploads/2021/03/IMG_0392-scaled.jpeg?ssl=1)
![](https://i0.wp.com/www.zuidwijk.com/wp-content/uploads/2021/03/IMG_0393-scaled.jpeg?ssl=1)
![](https://i1.wp.com/www.zuidwijk.com/wp-content/uploads/2021/03/IMG_0400-scaled.jpeg?ssl=1)
Everything is working without an additional power supply, the esp (Wemos D1 mini) is powered via the integrated buck converter:
And yeah, I bought a transformer, a bell and a button only for testing purpose 😂
![](https://www.zuidwijk.com/wp-content/uploads/2021/03/IMG_9946-1024x1024.jpeg)
LH
Can you already give an ETA on when it will be available in the shop? #quiteinterestingproduct
Marcel
Very soon,.. I want to test it some more my self ☺️
Marcel
I just did some final testing and found the cause of not working as I wanted it. I’ve redesigned the pcb and ordered them. Probably will be mid April in my store.
Stef Dewilde
This really is something I want!
Will it be delivered with the wemos build in?
Price idea?
Really curious!
Marcel
At this moment, it works with a classic “ring” bell, but not with my “ding-dong” bell. I guess that draws too much current and makes the esp go brown-out. I am testing it with some extra capacitors though.
Marcel
I just did some final testing and found the cause of not working as I wanted it. I’ve redesigned the pcb and ordered them. Probably will be mid April in my store. Price will be around 15 euro excluding shipping.