555 timer o2 sensor simulator help...

Discussion in 'The Projects Forum' started by 5810, Mar 4, 2014.

Thread Status:
Not open for further replies.
  1. 5810

    Thread Starter New Member

    Mar 4, 2014
    Hi, I'm very new to circuit building and this o2 sim is my first ever circuit build... I have built this o2 sim on a circuit board and its working k..

    My question is, is there a way to make the voltage not go to 0 Volts when the 555 timer switches low. Right now when the timer wave is high i have about .8 volts (can be adjusted with pot) but when the 555 timer wave goes down(low) the voltage goes to 0 volts.....My bikes ecu does not like the 0 volts and it goes to rich condition when it sees it...i would like to keep .5 volts(adjustable with pot) when the 555 timer goes low (switches off)..and have .8 volts on high wave..

    Is this possible...:confused:

    Any help would be greatly appreciated ..

    Thank you.
  2. Wendy


    Mar 24, 2008
    The owners of All About Circuits has elected not to host discussions of automotive electrical system modifications/enhancements due to safety concerns, the potential of legal ramifications and the possible circumvention of vehicle regulations at the state and federal level.

    This thread is against the AAC forum rules, Chapter 6, as seen here:

    This can be found in our Terms of Service (ToS)

    Automotive modifications of any kind are strictly forbidden. Therefore, this thread will be closed. Motorcycles also fall within this restriction.

    Please try to understand the reasons behind this action, and feel free to browse and use the forums.

    You might find answers to your questions in one of these forums:


    Another good forum that shares many of the same membership is http://www.electro-tech-online.com/ . Good luck.
Thread Status:
Not open for further replies.