MPPT solar battery charger

[harryweb]

Hi Ambrogio,

I just finished to install my solar panels 2 weeks ago. (Yes... I'm a turtle...)
As I doesn't make any charger I bought a cheap MPPT solar charger from Ebay (china) and it's a fake MPPT (just PWM).
So I've made the PCB for my real MPPT solar charger. Using most same parts as your schematics (just using other equivalent parts and not ACS712 but a maxim current sensor)
I have to modify your source program. :-)
I just would like to ask you, if you're happy with your charger/program, or did you make any changes ?
I have 220W solar panels.
I will give some news about the MPPT charger asap, I just received 5 PCB from... china today.... Have to solder now.

regards and 73
F1SLU Hervé
Best regards

[iw2fvo]

HI Herve,
It is still working well and no additional modification was introduced to the program.
I introduced an IDEAL DIODE found on the Ebay in place of the diode: it is OK.
I think the state machine portion of the program could be improved sometime...
My system has no PCB: do you have a spare one for me ?
All the best,
73, Ambrogio

[harryweb]

Hi Ambrogio,

My schematic is a bit different, so my PCB too ! As I have 220W panels some choice have to be done, and I also want to use serial to log on my computer. I think to make a python script to do that. I will upload picture of the schematics and PCB here but next week because I have it at work.
OK for the ideal diode. May be I will buy some of them ...
73, Hervé

[iw2fvo]

Thanks,
I will like to see it .
73, Ambrogio

[hisham545]

hi
help
the code dosenot work on pic18f4520 nothing is appear on lcd only pwm is working.
when i change lcd cofig in code and wiring lcd working and only see this on lcd :

Ambrogio 06/04/2014
PV PIC18F4523

then i added the line3 and line4 to the
Ambrogio 06/04/2014
PV PIC18F4523

then i see only zeros,adc is not working


i have only pic 18f4550,pic18f4520,pic16f877a.