I may be running a microcontroller for an extended period of time in a portable manner under battery, but do not want its life to be reduced by a silly load such as an LCD screen (5v + backlight) which may easily be drawn from my solar cell.
It is not enough to run the Microcontroller unfortunately (nor would I trust it, if it is intermittent) however wonder in what scenarios I can use the solar cell's power instead.
The LCD example is simple, I can regulate it and power it, only the data pins touching the Microcontroller, however there may be other components. Can I pair together both battery and that @ regulated 5V? Would it prefer one over the other since the solar cell may be closer if connected near or in between?
It would just be nice to get my money out of the solar cell.