Post by lbendlin on Dec 24, 2018 7:12:22 GMT -8
My solar setup suffers from the usual New England winter blues - not enough insolation to last through 24hrs reliably. A pattern has emerged where the board wakes up the Raspberry Pi around 1pm after the battery is deemed sufficiently full, and then runs through maybe 2am or sometimes even 6am before caving in.
Side note: I think I noticed a very clever behaviour where the load would be switched on when the battery didn't quite reach the upper hysteresis limit but the solar input dropped off long enough for the board to (probably) assume that that's it, nothing more coming, might as well switch on the output. BUT - that may just be my imagination
Nevertheless, it got me thinking. Let's assume the sun comes up at 8, and is sufficiently strong to both support the load and put charge back into the battery. What if the board would watch that input for a while and then say "Ah, looks good, let's risk it and jump out of the hysteresis" and would switch on the load with the hope that the good input continues (or maybe even with the knowledge of the weather forecast).
Right now I basically do the same thing manually by cycling the load switch. But it would be nice to have a way to influence the upper limit of the hysteresis, either via some jumpers, via timer, or - ideally - programmatically.
Side note: I think I noticed a very clever behaviour where the load would be switched on when the battery didn't quite reach the upper hysteresis limit but the solar input dropped off long enough for the board to (probably) assume that that's it, nothing more coming, might as well switch on the output. BUT - that may just be my imagination
Nevertheless, it got me thinking. Let's assume the sun comes up at 8, and is sufficiently strong to both support the load and put charge back into the battery. What if the board would watch that input for a while and then say "Ah, looks good, let's risk it and jump out of the hysteresis" and would switch on the load with the hope that the good input continues (or maybe even with the knowledge of the weather forecast).
Right now I basically do the same thing manually by cycling the load switch. But it would be nice to have a way to influence the upper limit of the hysteresis, either via some jumpers, via timer, or - ideally - programmatically.
