Hey everyone... Ive got some great small projects planned, so I figure this is a good way to start. Im looking for the schematics for an o2 guage. Not how to hook it up, how to acually build one, eg: circutry diagram and such. Ive done alot of searches around the 'net but cant come up with anything. Physically building it is no problem at all... thats what I do at work all day.

TIA!

 

There are dozens of them out there, mostly using the LM3419 display driver. Here's one such circuit:

http://www.sonic.net/~mikebr/efi/o2_bargraph.html

 

Thanks!!! :hail: :hail: :hail:

Do ya happen to have any other links? Just want to get a good look at everything before I go and do this. Thanks again!

 

Not really, to be honest I found that with a Google search. Trust me when I say they're nearly all identical. The one in the link is one of the more elaborate ones I've seen.

I built one a couple years ago, powered it up once, never really used it because I built a WBO2 shortly thereafter.