Variables and Commands

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The controller has a bunch of commands and preferences you can set. Here's some detail on what each does:

Preferences

wifiap - what wifi name to connect to
wifipass - what password to use
mqttServ - what MQTT server IP/address to connect to (supports setting the :port)
mqttUser - username for MQTT
mqttPass - password for MQTT
mqttFeed - feed prefix for MQTT

inPin - which GPIO pin to measure solar voltage from (after a voltage divider!) Make sure it's ADC1! (pins with ADC0 through 7 in this diagram)
psu - which type power supply unit to use. Set "DROK" or "DPS" (does support fancier syntax for custom setups, ask Tim in the discord)
vadjust - use this to fine tune the involt measurement (like if you used a different voltage divider)
currentcap - cap your maximum current output to your batteries. For example if you've got batteries that are only safe up to 4.5A you could set it to 4.5 and it would never increase above it
lvProtect - triggers a GPIO pin low or high if your battery gets too low. Set to PIN[i]:LOW-THRESHOLD:RECOVERY-THRESHOLD (ex: 22i:36.0:37.0 is pin 22, inverted, low cutoff of 36.0, recovery 37.0)

pgain - Proportional Gain: changes how a change in solar panel voltage affects the output current to the batteries. Use this to tune to get better solar following performance
ramplimit - limits how fast the output changes to the current are allowed to happen
offthreshold - can ignore. Is auto-set and in-development

pubperiod - change the time (in ms) between database publishes (only publishes changed values depending on the periods below..)
printperiod - change the time (in ms) between printing system state to the serial port
adjustperiod - change the time (in ms) between adjustments to the PSU. Adjustments will already happen faster if collapse is imminent
measperiod - change the time (in ms) between input voltage measurement. Much faster.
autosweep - change the time (in seconds) between sweeps (see sweep action)

outputEN - enable power output. must be set to on to enable output, anything else to disable. Empty value returns current state
outvolt - set output voltage limit on the PSU. Empty value returns current state
outcurr - set output current limit on the PSU. Empty value returns current state
outpower - just returns the measured output power
currFilt - returns filtered output power
state - allows you to override the current state variable or just get it
involt - reads the current input panel voltage
wh - reads the current Wh stored since last reset. May be set as well. On bootup it restores from mqtt
collapses - returns the number of collapses in the last 5 minutes
setpoint - The usually auto calculated goal setpoint for the input solar voltage to reach.

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