Just lugged (with my father's help) 3×350W solar panels from the front door up to the back deck ready for installation on Monday.
https://www.snowys.com.au/12v-350w-fixed-solar-panel-glass-roof-top ← 20.1kg a piece, 1850mm×1015mm×35mm.
Bloody exhausted.
I've got some homework to do first… a RPi Pico and three INA-219 featherwing boards turned up yesterday. I have to knock the 0.1ohm resistors off those boards and solder up some connectors so I can hook them and the Pico up… then write some firmware for the Pico that'll poll the INA-219s and give me voltage and current measurements.
The current shunts are already on the rack: one on the battery feed, one on the solar and one on the load. I'll then plug that into the TS-7670 and write something to poll it over USB and feed `collectd`.
Maybe Modbus/RTU, since I think `collectd` supports that… not sure. (I did find `collectd`'s support for Modbus was crap though, might look at better options.)
Means next week I may have some 120W used panels… still producing a decent amount of current … looking for a new home.
#SolarCluster
Stuart Longland (VK4MSL)
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2025-10-02 10:09:47 UTC
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2025-10-02 10:09:47 UTCEvent JSON
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"content": "Just lugged (with my father's help) 3×350W solar panels from the front door up to the back deck ready for installation on Monday.\n\nhttps://www.snowys.com.au/12v-350w-fixed-solar-panel-glass-roof-top ← 20.1kg a piece, 1850mm×1015mm×35mm.\n\nBloody exhausted.\n\nI've got some homework to do first… a RPi Pico and three INA-219 featherwing boards turned up yesterday. I have to knock the 0.1ohm resistors off those boards and solder up some connectors so I can hook them and the Pico up… then write some firmware for the Pico that'll poll the INA-219s and give me voltage and current measurements.\n\nThe current shunts are already on the rack: one on the battery feed, one on the solar and one on the load. I'll then plug that into the TS-7670 and write something to poll it over USB and feed `collectd`.\n\nMaybe Modbus/RTU, since I think `collectd` supports that… not sure. (I did find `collectd`'s support for Modbus was crap though, might look at better options.)\n\nMeans next week I may have some 120W used panels… still producing a decent amount of current … looking for a new home.\n\n#SolarCluster",
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