June 6, 20206 yr Hi everyone, I have recently installed a Hoymiles MI-600 microinverter and two 365W Mono Percium panels from ARTSolar. I still need to align them better, they are ground mounted and not on the roof. I see you can get a DTU for there micro inverters in order to monitor their output and also ensure that you do not export to the grid. Exporting to the grid is a real issue as our base usage when we are not at home is about 100w. But anyway the exporting of power is not my main issue, I would like to get the best alignment for the panels to give me the best power production curve across the daylight hours. So I need the DTU for that. The pricing I have found is more than what the panels cost shipped to Pretoria! https://leroymerlin.co.za/microinverter-data-transmission-unit-ellies-81434955 Do any of you have any cheaper sources for the DTU? Cheap knockoff units form Aliexpress maybe? I have already determined the the communication happens with NRF24 chips, so I might attempt to sniff the communication. On this front I don't think it broadcasts its power production without a DTU on the other side, as the LED flashes differently when paired with a DTU, so it might need a DTU to start transmissions, who knows, but we'll see what I'm able to sniff if I cannot get a cheaper DTU. May the sun be with you!
September 14, 20205 yr Hi powaLess, I have the same thing here do sniff nrf24 since days. But actually, I was not able to filter some sending MAC address that might be originated in on of my two MI-300 inverters. So in the meantime I'm afraid, Hoymiles implemented the NRf24 chips into a listening-mode by default, that needs to be actively connected by a DTU to start sending out data. Stil there's hope that the Micro-Inverters send beacons by them selves, but hops gets smalled every day. So, In case there's anything you were able to find out, please share it here 🙂 BR, P.
March 14, 20224 yr did you have any progress? In the momemt I'm part of a german chat https://www.mikrocontroller.net/topic/525778?goto=7002332#7002332.
March 15, 20224 yr Hi @powaLess I have a spare DTU like the one you looking at, I had to upgrade it as I bought a 1500w micro inverter which did not work on that inverter. I used this one for about a year. I am in Durban are you interested in maybe buying it?
May 30, 20224 yr Back here after 1.5 years - nice to see that HUbi finally get things forward 🙂 Unfortunatelly I gave up in September 2020. I'll try to get things up again with all that great work in the microcontroller community. Although seems that the MI series is still not easy to get into talking
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