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Topic: Automotive Gauge Sin/Cos (Read 1 time) previous topic - next topic

Leland Sindt

I have hit a bit of a roadblock on my latest project. I am trying to use an Arduino to drive the Speedometer and Tachometer from a 92 Acura Legend. I purchased the dashboard from E-bay, and dismantled it to find that the gauges are actually controlled via 3 contacts marked SIN/COM/COS.  I had assumed incorrectly that the gauge was a simple spring resistance volt meter. Frustrated I sent the whole project aside...

I was able to find this:
http://www.onsemi.com/pub/Collateral/CS8190-D.PDF
But have been unable to find the chip for sale (for a reasonable price).

So here I ask for some help, I simply do not know where to begin. I get the feeling that this is not going to be as simple as driving the SIN and COS point with but I really don't know.

Any direction provided would be much appreciated.

4fun

We did something similar where I work a while back. I will see if I can get some details. I remember it was a pain to get those gauge driver's working but it can be done. I might be able to help with the chip also.

Leland Sindt

4fun,

Wow, that would be great! I would love to complete this project.

Please! let me know if there is anything that you need from me.

I look forward to your reply.

4fun

Sorry for the delay, the part numbers for the gauge drivers I got from my buddy at work are as follows. He did the figuring out on this one so this is all I have I am afraid.

CS4122XDWF24 IC DRIVER TRIPLE AIR CORE 24SOIC
CS4192XDWF16 IC DRIVER AIR CORE SINGLE 16SOIC
CS8190ENF16 IC DRIVER AIR CORE SINGLE 16SOIC

As my friend reminded me he had a time of it finding out which pin needed +sin -sin etc. You may need to work all of the permutations. Try Digikey for the parts. Good luck.

spiffed

FindChips.com shows mouser and digikey both stock the CS8190 in PDIP and sell in single quantities.
Mouser: $3.95
Digikey: $4.24

If by "for a reasonable price" you mean "less than $3", I wouldn't expect much; ONSemi's budgetary price is $2.0933 so unless you're picking up 10,000 or more, expect some markup.
iDuino - MaxSerial - [url=http://spi

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