Quote Originally Posted by ko4ko
I'll tell with some words what I did:
LSU that I use is BOSCH...7057, IC - BOSCH CJ125 , I made a demo board with the connection exactly the same as in the CJ125 description. I use pic mcu to control the bosch ic . there are 2 analog values to measure , measuring RI is needed to control the heater.
Did U make any board with bosch IC ? , and did U succeded with measuring AFR. Aaa now I have available one working LSU controller - WBO2.
I think to compare it with mine on working car , but .....it's harder than I think to make it work properly.
The other thing that I can't understand is how to transformate the measured value /voltage 0-5V/ to AFR/ 8.0 - 18.0/
i have several air fule meters i could match up what you did if it is simple to do. played with the bosch part back in 2003 but gave up due to bosch refusing to give up useful information. my demo board is still around here so maby i could re visit it again. every once in a while i re visit the dame thing.
regards
john m.