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Homewizard P1 Energy Meter through hwenergy.app
Posted: Sunday 18 December 2022 22:25
by Lammert
I have a P1 homewizard energy meter in a vacation house and would like to extract the energy consumption in the domoticz system that I use at home.
I can access the data on my pc via the web on the link https:hwenergy.app
Has anyone experience how to fetch the energy consumption data from that website and integrate it in virtual sessors in domoticz.
Can this be accomplished with an dzvents script?
Re: Homewizard P1 Energy Meter through hwenergy.app
Posted: Sunday 18 December 2022 23:11
by willemd
According to the homewizard website you need a Energy+ subscription in order to be able to export your data (for example to csv) from their website/app.
I am using their device API links to import data into domoticz directly, but I have the devices on my local wifi network.
Probably, as an alternative, if you could make your remote network accessible by vpn you could also import the data into domoticz, as if the devices are on your local network, bypassing the storage and app of homewizard.
Re: Homewizard P1 Energy Meter through hwenergy.app
Posted: Monday 19 December 2022 13:26
by Lammert
thanks Willem
A VPN setup will be too difficult for me.
I noticed when I use a certain hyperlink in the browser as is (without the + subscription) I do get a JSON response.
Hyperlink:
https://hwenergy.app/totals?home=XXXXXX ... /Amsterdam
Response:
{"arrow":"arrowImport","style":"color: rgb(113, 17, 230);","costs":"€0.00","value":"2.2","unit":"kWh"}
I was wondering if adding a HTTPS poller to the hardware in combination with a LUA script could work. I'm too inexperienced to code up a working LUA script.
Would this be feasible and if so has anyone suggestions for such a LUA script.
Re: Homewizard P1 Energy Meter through hwenergy.app
Posted: Monday 19 December 2022 15:39
by willemd
This is what their standard API data for a kWh meter looks like:
{"wifi_ssid":"Ziggoxxxxxx","wifi_strength":100,"total_power_import_t1_kwh":2.262,"total_power_export_t1_kwh":1450.781,"active_power_w":-28.444,"active_power_l1_w":-28.444}
and this is the script stored in the lua_parsers folder to get that data imported into domoticz, with a http poller setup.
So with some adaptation you should be able to use the data you are showing, the format is similar.
Code: Select all
------ BEGIN ------
-- Read API values
s = request['content'];
--
-- kWhmeter solar panels
--
-- return value
local a = domoticz_applyJsonPath(s,'.total_power_export_t1_kwh')
-- active current return
local b = domoticz_applyJsonPath(s,'.active_power_w')
local c = domoticz_applyJsonPath(s,'active_power_l1_w')
--
local idkWh = 3
domoticz_updateDevice(idkWh,'',-1*b ..";".. a*1000 )
------ END ------
Re: Homewizard P1 Energy Meter through hwenergy.app
Posted: Monday 19 December 2022 18:32
by Lammert
thanks,
unfortunately I do get an error from the HTTPS poller that no data is returned.
I guess it could be a security issue which prohibits this.
Nevetheless thanks for your suggestion.