Shelly, Zigbee, Eve, FIBARO & More up to 50% off, e.g. Shelly 3EM $139 (Was $199) + $9.99 Delivery @ Oz Smart Things

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AssociatedOz Smart Things on 24/11/2023 - 10:00 ozsmartthings.com.au (586 clicks)
Last edited 24/11/2023 - 10:32 by 1 other user

Hey Guys!

Happy Black Friday. The actual day is here!

If you have followed us since our last post, you would have seen the daily deals added to our site for the black Friday sales period. We have finally come to the day, and we have all our top deals up for grabs. This sale must end on 30/11/23, and stock is limited. Some have already sold out!

We have deals on all your favourite smart home and security gadgets.

Also, if you have not seen, we have a black Friday competition where five lucky winners will be given an Evemotion blind for free. See the details here.

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  yoho on 24/11/2023 - 13:40

  Does the Shelley EM measure both directions? i.e. if the clamp is based on the meter line, would it show net consumption (+ve) and if solar exceeds consumption then a negative value?

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    bleugh on 24/11/2023 - 13:58

    +1

    just put two CT's on - one on the solar output, one on your main incomer, then use Home assistant to do the math. Personallly I use an IotaWatt which does exactly what you want, but i've a more complex two inverters to monitor

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      howdydood on 24/11/2023 - 18:03

      @bleugh - how frequently does the IotaWatt update? Can it do once per second or is it every 15 seconds or longer? Thanks

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        bleugh on 24/11/2023 - 21:51

        It’s practically real time via it’s web interface, and it squirts our data at a similar rate if you want it to.

        Home assistant can interrogate it fairly quickly, unsure what rate though, haven’t needed to check as the default HA refresh of 1 minute does it for me

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  tunzafun001 on 24/11/2023 - 16:09

  I want to charge my car, and or heat my hot water when solar is exporting >3kw.

  What do I need?

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    bleugh on 24/11/2023 - 17:29

    An electric vehicle, some solar panels , an energy meter (both production and consumption) and a ‘catch power’ relay device.

    You could also install something like home assistant (or similar smart home software) and a smart couple of relays to trigger contactors and you then program the relays to do stuff you want.
    I.e. if production - 3kW > consumption then switch relay.

    For hot water, a solar diverter may be worth considering, it sends every spare watt to hot water till the tank can take no more. Better for low production winter and rainy days.

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      tunzafun001 on 24/11/2023 - 19:19

      Nice… but I meant things in this sale…thought a couple of shelley's (no idea which ones) and software could do what a catch relay used to do.

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        bleugh on 24/11/2023 - 21:53

        Nope.
        Though with additional hardware (heavy current contactors for hot water) and software, the things in the same can do what a catch relay could do.

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          tunzafun001 on 25/11/2023 - 11:58

          @bleugh: Just need 10 amps, well .4A Heat pump , 8A car charger.