Internal sensor data arrives as input audio channels from the icosadehron.
# Current
Audio channel #1; multiply by factor 6.0 to get power utilization in amps. Power should be near zero when output signal is all zeros, otherwise 1.5-3.0 amps depending on signal level and array temperature (current increases with temperature).
# Voltage
Audio channel #2; multiply by factor 40.0 to get volts. Should be around 24 volts at all times.
# Accelerometer
Tilt sensor is mounted flush with face #19. Scaling? Channel?
