I have the following setup; 20v solar panel -->> MPPT chagre controller (sparkfun sunny buddy) -->> battery(3.7v 7000mAh & 5v microcontroller in parallel, see diagram below.
In full sunlight and approx. 19v input to the charge controller from the solar panel;
- Should there be power applied to both the battery and the microcontroller?
- If the battery is low ( i.e. charging ) will the microcontroller still get power?