Inverter building using Wiseguys Power board and the Nano drive board

Author	Message
phil99 Guru Joined: 11/02/2018 Location: Australia Posts: 2857	Posted: 01:44am 14 Sep 2025       You may be able to use a digital out/open collector pin to switch the range via another resistor in the lower leg of the divider and have the best of both worlds. When the ADC value exceeds a suitable limit set the pin low. When the ADC value falls below a limit determined the ratio of the two ranges set the pin high. Your software could then either adjust the display to suit the range, or for maximum resolution on the low range, just change the trace colour to show when it is on the high range.