Web control of multiple AC circuits

Post Reply
sharpener
Posts: 435
Joined: Fri May 20, 2022 10:42 am

Web control of multiple AC circuits

#1

Post by sharpener »

Over 10 yrs ago I found a really useful device - the Aviosys IP9212 - which had 8 mains relays in a box, controlled by a small web page server. It also has 8 programmable timers so you could set repetitive on/off times independently.

So I wired it into various bits of the heating circuitry and I could control the separate hw, ch and u/f functions and also the Villavent whole-house heat recovery plant, whether I was at home or away.

It has had quite a few components replaced and is now on its last legs but sadly they don't make them any more.

Ideally I want an oven-ready replacement so I can just connect the LAN at one side and the 8 mains circuits at the other. I know it can be done with Raspis and Modbus and so forth but that would involve more programming than I can face ATM. I have got a small Arduino but adding the right mains interface boards to that is non-trivial and it would need the s/w stitching together from some library or other.

OTOH I could bodge it with 8 wirelessly controlled mains plugs but that would be expensive and inelegant.

Has anyone got any recommendations?
16 x 230W Upsolar panels S Devon, 4kW Steca, 3.9 MWh FITs/yr
8 x 405W Longi panels, 250/60 MPPT, 3.3 MWh/yr
Victron MultiPlus II-GX 48/5000/70-50
10.65 kWh Pylontec Force-L2
zappi 7kW EVCS
Villavent whole-house MVHR
5000l rainwater system
Vaillant 12kW HP
AGT
Posts: 1005
Joined: Sat Jan 29, 2022 11:26 am

Re: Web control of multiple AC circuits

#2

Post by AGT »

A few din rail mounted Shelley’s in an enclosure.
Oldgreybeard
Posts: 1873
Joined: Thu Sep 09, 2021 3:42 pm
Location: North East Dorset

Re: Web control of multiple AC circuits

#3

Post by Oldgreybeard »

If you're thinking about monitoring stuff as well, then I'd suggest taking a look at Home Assistant, as it will interface with pretty much any off-the-shelf WiFi switch. You can even homebrew switching cheaply with the ESPNow add-on for HA and use multiple relay modules like these (cheaper than using lots of Shelleys): https://uk.banggood.com/5V-or-7-28V-Pow ... &rmmds=buy

ESPNow is really easy to set up in HA, and HA also interfaces with many inverters etc, to get power, energy etc stats all locally, without going through servers in far-off lands. You can also make a port accessible to the outside world if you like, to allow control from anywhere.
25 off 250W Perlight solar panels, installed 2014, with a 6kW PowerOne inverter, about 6,000kWh/year generated
6 off Pylontech US3000C batteries, with a Sofar ME3000SP inverter
Tinbum
Posts: 1130
Joined: Mon May 31, 2021 9:55 pm

Re: Web control of multiple AC circuits

#4

Post by Tinbum »

85no 58mm solar thermal tubes, 28.5Kw PV, 3x Sunny Island 5048, 2795 Ah (135kWh) (c20) Rolls batteries 48v, 8kWh Growatt storage, 22 x US3000C Pylontech, Sofar ME3000's, Brosley wood burner and 250lt DHW
sharpener
Posts: 435
Joined: Fri May 20, 2022 10:42 am

Re: Web control of multiple AC circuits

#5

Post by sharpener »

Thanks @Tinbum, the Denkovi stuff in particular looks promising.
16 x 230W Upsolar panels S Devon, 4kW Steca, 3.9 MWh FITs/yr
8 x 405W Longi panels, 250/60 MPPT, 3.3 MWh/yr
Victron MultiPlus II-GX 48/5000/70-50
10.65 kWh Pylontec Force-L2
zappi 7kW EVCS
Villavent whole-house MVHR
5000l rainwater system
Vaillant 12kW HP
dangermouse
Posts: 126
Joined: Wed Oct 05, 2022 11:48 am

Re: Web control of multiple AC circuits

#6

Post by dangermouse »

A plug and play solution would be an IPDU, but not the cheapest.

For example: https://www.broadbandbuyer.com/products ... -pdu41004/

Can't comment on that particular brand, just the first hit that came up.
User avatar
Stinsy
Posts: 2946
Joined: Wed Jun 02, 2021 1:09 pm

Re: Web control of multiple AC circuits

#7

Post by Stinsy »

Shelly pro is how I’d go with this kind of project.
12x 340W JA Solar panels (4.08kWp)
3x 380W JA Solar panels (1.14kWp)
5x 2.4kWh Pylontech batteries (12kWh)
LuxPower inverter/charger

(Artist formally known as ******, well it should be obvious enough to those for whom such things are important.)
Post Reply