Hi,
nice projet. I am very interested in it.
But why you are using 5 V and not 3.3 V? The ATmea328 works with 3.3 V too and the NRF have to use 3.3 V.
The only restriction on 3.3 V is the clock limitation for the Atmega (8 MHz). But with no crystal it don't care.
For example you could use an HLK-PM03 instead of HLK-PM01 and remove the linear voltage regulator. So you get more space an everything have the same voltage level.
And another point is, it is recommended to use a capacitor (0.1 µF) to ground for each voltage pin (Vcc, Avcc, Aref).
@nicomedia I stumbled on this doing a google search. Just wondering if you are still trying to get your Sonoff's working with your Vera controller? If so, I have written a blog post on the subject. It uses a different firmware called ESP Easy and an HTTP Switch plugin on the Vera rather than MySensors. but it works rather well for me. Here is the link to the blog post:
https://dan.bemowski.info/2017/07/04/using-a-sonoff-with-espeasy-and-vera/
I use this in conjunction with some MySensors wall switches that I built.
https://dan.bemowski.info/2017/06/11/my-start-into-open-source-hardware/
I'm afraid you're not going to get many answers to your question if you provide not more information...
type of heat pump, manufacturer
what are the current possibilities of controlling this heat pump
photo's
electric schema's
...
Try to give as much as possible (technical) information...
@Shivanand-Chanderbally I recently finished a node using the acs712 and found it to be very sensitive to nearby magnetic fields. It is best to have it as far away from these as you can.
