I have a speed sensor that i believe represents speed based on a gear inside the sensor. I can modify the output by changing the gear (more or less teeth) but would like to try and do this using my arduino.
My Sensor has the following wires 1. 5v 2. Ground 3. Speed signal
I would like to read this signal with my arduino and modify it then send out the modifed version.
Can anyone help me with this. What would the characteristics of this signal be? Square wave, Feq, voltage... What would I be changing, the Frequency I assume?
To avoid any safety concerns the Speed gear is attached to a bicycle and a wheel that touches the tire spins the gear...