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