On the back of the speedo, VW added a hall effect sensor that is intended for the mfa.
Can this be used to feed speed readings to MS?
VW speed sensor
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
VW speed sensor
1981 VW Scirocco w Turbo 2L 16v
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Matt Cramer
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Re: VW speed sensor
Theoretically yes, but with current firmware you would need to build a frequency to voltage converter and bring the resulting signal in on JS4 or JS5.
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rocklizzard91
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Re: VW speed sensor
hmmmm this is quite interesting.
i had a question on how to get the speed sensor to work with MS a while back and got no replies.
how do you build the freq to voltage converter?
and a question to the origional poster- why do you want the speed to read in MS? just wondering
i had a question on how to get the speed sensor to work with MS a while back and got no replies.
how do you build the freq to voltage converter?
and a question to the origional poster- why do you want the speed to read in MS? just wondering
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Matt Cramer
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- Joined: Sat Jul 03, 2004 11:35 am
Re: VW speed sensor
Here's one example I've seen of a voltage to frequency converter circuit for VSS input. I have not tested this myself; you're on your own for making this one work.
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rocklizzard91
- MegaSquirt Newbie
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- Joined: Tue Jan 12, 2010 9:19 pm
Re: VW speed sensor
wow. it looks scary!