MPPTs
29-06-2023: Preliminary MPPT Testing
Tested one of the MPPT boards using a power supply (Sparky) and load (Rigol DL3031)
Load set to 25V, power supply to 2A and set to ~8V (max 15V)
Power output around 16W, an efficiency of ~91-92%
Conditions: cloudy, no direct sun, ~22°
Replaced the power supply with a large solar panel
Voltage around 6V and current 7.78mA
Load: ~25V; 0.027A; 0.6-0.7W
Another panel connected in series, power output increased to ~0.6W
When the protective layer from the larger solar panel was removed, increased power output to 0.83W-1.0W
DCDC
05-2023
During the test, the capacitor discharge circuit started smoking
Once working, DCDC output max is 10.6-10.7V
6-2023
Replaced R8 to 10k ohms resistor, but seems like the resistor removed was 10k
Connected back to the power supply and load no change in output voltage
PD
Checked voltage rails seems to be all good
Enabling pins to check the rest of the rails