What is the best way to get a vehicle speed? How does the spedometer work?

[david90]

Does anyone have datasheet on honda's speed sensor and its characteristic? What kind of signal does it put out.

What is the best way to get a vehicle speed? How does the spedometer work? Maybe I can tap somewhere in theere.

 

[IanP]

48re speed sensor

If you would like to build a digital speedometr and learn how it works, here is a link:
https://martybugs.net/electronics/speedo.cgi
Other options:
**broken link removed**
As far as Honda VSS (vehicle spped sensor) is concerned, there will be several options for different models..

 

[david90]

car speed sensor

what's the usual output voltage of the speed sensor?