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WidebandO2One

First Wideband O2 Controller for Bosch LS 4.9 Sensors. I hope to add more complex controllers in the future that is why I named it "WidebandO2One" Also, because it is going to control only one sensor. I plan on a two as well and will add that to my Megasquirt projects.

Key Elements

  • Uses ATTiny 1626 micorprocessor as the micro as they are cheap and easy to program. It is using the Arduino code base.
  • Wideband O2 blog here for more details.
  • Uses the Bosch CJ125 controller chip as the basis of sensor control.
  • More to come as project expands into my 99 Ford F150 project.

So far, I only have the schematics done. Code to follow shortly, but loosely based on Arduino shield code from here.

Note: All Schematics are written in KiCad.

Works Only With LS 4.9 sensors

  • However, with some rework it will work with 4.2 Sensors, but I am not sure why one would use 4.2