Hi. I have a two pin induction camshaft position sensor. I want to find a way to make its signal compatible with arduino uno input. I can not find any useful guidance for beginers. The product code of the part is 9625423880. If anyone knows how to codition its output signal or share schematics that would be great. Thanks for your time.
Looks like its just a fancy switch. Take a ohm meter, attach it to the two pins and toggle it. See if it grounds out the signal.
-jim lee
Where can we find the data sheet of that thing, explaining how it works exatly?
I donno'. I looked it up, found it on Amazon and there were no useful specs. It may be a hall effect sensor?
-jim lee
Some sales link talk about inductive sensor. Makes more sense than hall as inductive doesn't need a magnet on the other side, and such sensors can be used to detect things like teeth of a gear wheel.
Are you looking for a VR conditioner circuit? (two pins usually indicates an inductive VR sensor, 3 pins for hall effect) I believe the max9926 chip is generally considered the best way to convert a VR signal. There are many examples under a search for 'max9926 vr conditioner circuit' and ebay and many other sources have circuits for sale under $25.
Thank you for your reply as well the other guys. I connected the sensor on my arduino and with the help of serial sketch i saw values for metal object lower than a volt. When i moved a magnet at the tip of the sensor i reached 4 volt signal. In both situations i directly connected the pins to my ground and input of my arduino and moved the magnet and metal by hand as quickly as i could do to see the range of volts it produces. I believe that the sensor was ment to detect teeth and not magnet object because at 3500 top rpm of camshaft is going to make serious voltages that could fry the original circuit.
giannhs_mich:
Thank you for your reply as well the other guys. I connected the sensor on my arduino and with the help of serial sketch i saw values for metal object lower than a volt. When i moved a magnet at the tip of the sensor i reached 4 volt signal. In both situations i directly connected the pins to my ground and input of my arduino and moved the magnet and metal by hand as quickly as i could do to see the range of volts it produces. I believe that the sensor was ment to detect teeth and not magnet object because at 3500 top rpm of camshaft is going to make serious voltages that could fry the original circuit.
If you were measuring the voltage with a meter with several megohms input resistance, I can see where you might get such a voltage. Load the sensor with a resistor of 1000 Ohms or so and see what you get.
Paul
I measured it with the arduino input pin and ground. As long as the values dont exceed 5 volts I thik is a good way to measure. The sensor self resistance is 550 ohms. I did not used any resistance (more than its own) for the reading.