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MPT-7210A Questions
#41
Has anyone probed the serial port on the MPT-7210A? I did a quick google search and was surprised that I didn't find anything.
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#42
Hi all, my lcd is all white (only backlight is showing) afther a small electric discharge from my body i feel a small discharg on my finger when i was to push one of the 7210A buttons... then white screen Sad  i went to ebay and bought this 1.8 Inch 128 x 160 Serial Spi Tft Color Lcd Module 128X160 Display St7735 W W8V3. But is still getting the white screen Sad the 7210A  is working i can read 25v from a 12.5 input.
If any one can hellp me please..
Thanks
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#43
(03-15-2018, 05:55 PM)thanar Wrote: >I also believe these units are quite good for their price, give lots of control over the charging parameters and can
>be used as DC-DC boost converters reliably. However, a 100Wp panel is the minimum (says so in the chenglish
>manual), the tracker just doesn't work right under a smaller panel.

I didn't find that clause in the manual when I researched it, and mistakenly assumed that the unit itself would not consume even 10W...  my 20W panel in full sun *does* boot it up correctly but once I try to draw any power to charging a battery, it goes flaky as reported here by others.

I was hoping I could get a small trickle out of this unit into my 36V bicycle pack... but it looks like the fan/display/losses consumes too much to function correctly...  

I can put it to use other ways, so it isn't a total loss...   but I'm looking for a good and inexpensive way to slow-charge/maintain my bicycle pack with solar...
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#44
Hi
Im concidering getting one of these not sure now, is this an isolated incident?
Battery is li iron using 18650s, 14s, 0p, and growing cell so far 23. 300 on their way ??
Bms is a diy open source by stuartpittaway.
No solar yet, 
Building wind turbine, 48v im after a 48v motor if anybody has one for sale.
Cells 2000 to 2500ma.
Cells 1500 to 2000ma.
Cells 1000 to 1500ma.
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#45
mines been running for 2 years with little problems. The biggest thing you have to know about these is that they are Boost Only charge controllers Your solar in has to be lower than the min of your battery. I have 12V Panels and charging a 7s (24V ) system.
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#46
Yes buck boost soppose they are less efficient.
Battery is li iron using 18650s, 14s, 0p, and growing cell so far 23. 300 on their way ??
Bms is a diy open source by stuartpittaway.
No solar yet, 
Building wind turbine, 48v im after a 48v motor if anybody has one for sale.
Cells 2000 to 2500ma.
Cells 1500 to 2000ma.
Cells 1000 to 1500ma.
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#47
And they Arent mppt. They are manual ppt and not automatic. They work but yeah you get what you pay for
The Ultimate DIY Solar and build place
YouTube / Forum system setup / My webpage  Diy Tech & Repairs

Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 83kWh LiFePo4 | 10kWh 14s 18650 |  66*260W Poly
Upcoming: 14S 18650~30kWh | Automatic trip breakers, and alot more
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#48
We just need someone to do a brain transplant on it to make better use of the hardware. I've already worked out most of the power path components/functionality.
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