i am trying to build mppt using ir2148
and using arduino nano. unfortunately i am having a problem with my mppt
no matter how much I tried I only got 60-70 efficiency.
I have 4 pcs 330uf at input. and 5 pcs 330uf at output.
I really need help to find the fault. I also tried to manually increase and decrease the pwm duty cycle to think its code problem. but I only get the same results. its always get about 60-70 percent duty cycle. help is really much appreciated