Motors of old car Dashboard

Hello everyone.

I've got an old Car Dashboard, which i would like to drive with the Arduino. Maybe later i will include this into my Racing rig.
I've done some Arduino Projects and got some basic knowledge about electronics.
Ive stripped the Dashboard appart to look whats inside. I looked at the RPM counter and there is little motor.

I've done many research and find out that this thing is named air-core meter. I hope this is correct. There are some infos around the Internet, but since english isn't my nativ language there sometimes hard to understand.

The I on this tiny Board is named SE094 5R30A. I tried searching for a data sheet but can't find anything.
The little PCB has 3 connections, named IG+, GND and SIG. The air-core itself has 4 Pins.

Since i can't find anything about the ic i soldered 4 wires directly to the aircore.
With a slimpe digitalwrite Code whih switch one output on abfter another, I was able to get a full 360 turn. But this only in 4 stages, because of the Code.

So i conneted the irst coil of the motor o arduino and run a pwm signal with a for loop from 0 to 255 and i can get the needle to move up to about 4500 rpm which will be about 1/4 of ta full 360° rotation.

From all what I've found out and hopefully understand right, i need now the second coild to be turned on and the first turend of, at the sime time and reset pwm signal to 0 and let it increase again to 255 to get a full 180° movement.

But i really cant get this working. I hope someone can help me. Maybe you have a link with a piece of code or something.

Thanks

HTTP error 403, forbidden....

Fixed,
sorry didn't see i can upload them directly to forum.

Interesting motor - its possible a small induction motor pushing against a hairspring,
so basically a torque motor used to drive a needle. You may need a varying frequency
of quadrature drive into the two sets of coils to push the rotor round to various degrees.

Yeah, they look ery interessting. I think I've got it, i found a code on net http://xisantix.weebly.com/e-gauge.html

With this code and L293D i'm able to drive this motor.

That's not an old car. There is an IC in the dashboard.

...R

Great, that means I'm not old!

So it looks like these dial "motors" have a permanent magnet rotor and two
quadrature windings each a helmholtz pair, roughly. The spring may just be to
return it to zero when the power is off.

Hello Tombo89. I tried looking into the code, but get the "not found"page. Would you happen to have a copy of the code?

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