The Oz DIY-WB PCB, when constructed using the parts kit acts as in interface to an NTK L1H1 wideband oxygen sensor to produce a voltage output between 1.4 and 3.1 volts representing the AFR (Air Fuel Ratio) between 10:1 and 25:1 (stoic, or AFR of 14.7:1 is at 2.5 volts).
The Oz DIY-WB PCB is a small printed circuit board that is sold separately from a matching parts kit. It's NOT a project for beginner or inexperienced hobbyists. You will need very good electronics skills to construct the PCB.
Click on the image to see an enlarged version of the bare PCB. Note that the silk screen outline (the white lettering) has three mistakes - U2, U4 and (the optional) U9 outlines are reversed.
You can Order the Oz DIY-WB PCB here too.
