When I feed the WBO2 signal into the Arduino I get a reading of about 8 on both the WBO2 gauge and the Arduino/LCD. But, neither move, not good. I think I need to either add a small capacitor where it feeds into the arduino or us an A/B switch (Arduino or Gauge). I can still see real-time WBO2 on the laptop interface to the WBO2. Feb 17, 2016 · AFR meter on Arduino with 16x2 LCD screen on WBO2 controller and LSU4.2 wideband lambda sensor. AFR meter on Arduino with 16x2 LCD screen on WBO2 controller and LSU4.2 wideband lambda sensor. Exhaust Gas Oxygen Sensors (O2 and WBO2) The type of O2 sensor (narrow or wide-band) must be selected in TunerStudio under Tools > Calibrate AFR Table. Narrow-band NBO2 sensor signals are read directly by Speeduino. TunerStudio applies the standard non-linear 0-volt to 1-volt values for all standard NBO2 sensors automatically under calibration. I use an Innovate LC1 ("Lambda Cable") running a WBO2 sensor in place of the stock narrowband. It switches on with the ignition and runs the WB constantly. The LC1 has two programmable analog outputs.