Hello JDeForest
I have sorted this issue of displaying the liquid level…
1st use the Aux port u like, in my case I left the BRD_PWM_COUNT=4 where my AUX 1,2,3,4 works as the Servo outs and AUX 5 and 6 are PWM in puts.
I connected 5v BEC to AUX 6 as AUX rails don’t provide power and PWM in from Richen Power sensor.is connected to the AUX 5 as the PWM input.
and then in the mission planer I have set the following params
RSSI_ANA_PIN=54
RSSI_TYPE=4
RSSI_CHAN_HIGH=1900
RSSI_CHAN_LOW=1100
Then in the mission planer go to quick tab double click any of the value and select rxrssi .
Then Calibrate the Liquid sensor
Should Have firmware 3.5 or above
Regards
Sanks
(Love From Sri Lanka)