SwitchDoc Labs SolarMAX2, Руководство по сборке и испытаниям

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There are three major components to the SolarMAX2 software power management system (these numbers are
current as of Version 015 of the SolarMAX2 MiniProPlus Computer software:
•
Hysteresis - Hysteresis is the first line of defense for your Pi and your SD Card. Basically, SolarMAX2
will turn the on the USB Power (to the Pi) at a higher voltage than it will turn on. The criteria for turning
on (subject to the timers below) is: battery voltage 11.8V and 100mA of solar current. The criteria for
turning off is: battery 10.86V or Pi Load Voltage of less than 4.76V.
•
First Time On Timer - Delays a turn on of the USB Power (to the Pi) when SolarMAX2 has determined
that it is time to turn on the USB Power. Doesn't occur on power on to the SolarMAX2 computer, but
only after the Hysteresis function has determined that it is time to turn on the USB Power
•
Ten Minute Timer - Used to prevent a quick turn off and turn on on a well discharged battery. If
SolarMAX2 turns the USB Power off (to the Pi) then this timer prevents it from turning on again for 10
minutes.
The AuxA variable (which is on the Solar Voltages Graph) has the following meaning:
// AuxA has state information
// coded in the long integer
// 00000000 00000000 00000000 000X ABCD
// X - reserved (0)
// A = reserved (0)
// B = 5V Load Power state
// C = 1 - Ten Minute Power Off / On Timer
// D = 1 - First Time On Timer On, 0 First Time Timer Off
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Version 1.1 September 2021