Hi
I'm currently building a 'Car in a box'
https://www.mintynet.com/?page=hack for use at security events to safely show others how to hack cars.
I am using Ardustim on an Arduino nano to simulate the Crank and 2 Cam sensors and this works well. I am using a basic 555 circuit to simulate the two O2 sensors.
The problem I am having is with simulating the ABS Wheel Speed Sensors, I have managed to use a basic DSO138 scope to get the following waveform for one of the sensors
The waveform was created using the sensor next to a magnet rotating in a drill and the 10hz equates to approx 1mph.
I have tried to use a XR2206 signal generator with either sine or triangle waveform but it does not seem to register any speed. The square wave output doesn't allow to vary the amplitude so cannot check that
Can anyone recommend a circuit that could possibly generate the correct waveform.
Thanks in advanced
Ian