Jump to content

PWM output to control factory boost gauge


Recommended Posts

Hi there,

Another thing on my to do list is to control a factory boost gauge via an aux output (pwm most likely ) to also dynamically move as boost target changes.


I don't know if it'll be possible but as a baseline, at least have a boost gauge that somewhat works.


It would be great if the needle / gauge output target moved as boost target changes via an AV potentiometer.  


Here are the photos of the gauge.  I'm assuming AUX 3 can be switched a pwm ?  Would I need a pwm to AV convertor of any sort ?


A good write up here.  Probably a good starting point.

"Chromedecu.org | Boost Gauge" http://chromedecu.org?page_id=889


Any known feedback?

Will it work? Do I have to use a specific output ?  My high level drawing attached.



More photos




Link to comment
Share on other sites

On 10/2/2021 at 6:20 PM, Adamw said:

Aux 3 will be fine and it should work connected directly.  I have no idea what frequency the factory gauge uses though.  

Thanks, Trial an error for freq i guess....  From factory, they always seem to lack accuracy anyway...


Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...