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hoylabs / OpenDTU-OnBattery

Software for ESP32 to talk to Hoymiles/TSUN/Solenso Inverters, VE.Direct devices, battery management systems, and related peripherals
GNU General Public License v2.0
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[Request] Powerqueen Charger Support #1095

Open itscz-org opened 4 months ago

itscz-org commented 4 months ago

Is your feature request related to a problem? Please describe.

No problem

Describe the solution you'd like

I use two of these 30A bluetooth powerqueen chargers: https://www.ipowerqueen.de/products/power-queen-12-24v-30amp-mppt-solarladeregler-und-bluetooth-adapter

It would be awesome if they could be supported as well in addition to the Victrons. However, there is currently no documentation of the protocol used. I already aksed Powerqueen but they didn't provide any infos.

Their smartphone app is the only piece of software right now that can communicate with these chargers: https://play.google.com/store/apps/details?id=com.ruijing.mppt.pq&hl=de_AT

I am not familiar with bluetooth traffic sniffing to do some reverse engineering on my own. If anyone can guide me i may contribute more infos, but that is all for now.

Describe alternatives you've considered

None

Additional context

None

spcqike commented 4 months ago

Bluetooth may be complicated but the charger should have a rs232 or rs485 port. so that’s something to work with.

Can you capture data from this port and provide it here?

itscz-org commented 4 months ago

It has rs485 but i don't know how to utilize it

itscz-org commented 3 months ago

I ordered an USB-RS485 cable i will try if i can get any infos from it.

itscz-org commented 1 month ago

Just an update: The cable didn't fit, it had an 8pin RJ45 connector whereas the charger has something smaller (6pin?). So no progress here yet.

drahdiwaberl commented 1 month ago

it's an OEM product, can be found with various different brand names on it.

https://www.litime.de/cdn/shop/files/LiTime30AMPPT12V24V-1_ad234e60-8b69-4f3a-bb5d-baf899726c50.jpg

https://www.redodopower.de/cdn/shop/files/DerMPPTSolarladereglervonRedodobestehtauseinerAluminiumlegierung_387567dc-09e8-466a-ad66-63e83d2c66c7_720x.jpg

chances are high there is some library and documentation of the connection (it's an RJ12 plug) already out there, but one would have to find out under which name..