A 21% increase is nothing to sneeze at. It would be interesting, though, to see if the addition of a current sensor could get you any significant boost over what you've got already. Perhaps a hall-effect sensor, so you're not dealing with resistive drops? 5-A DC units from Allegro are only a few dollars.
When the display is attached, I can manually step the PWM up or down and see shat happens. Inside or when cloudy, the power dropped and rose quickly with small changes in duty cycle. More then enough milliamps to power the board but not enough to get excited about. In full light, +/- 10% is barely detectable on my cheap meters. With a lot more power, it might matter more. The interesting range is about 45% to 70% duty cycle so I did see that is beneficial to change the boost versus a simpler circuit using a fixed boost... another question I had.
- Ed.[ Parent ]
