What I would like to do it build is a project that detects a resistance, and then according to that resistance chooses between 4 different functions.
For example:
80ohm = lock doors
150ohm = unlock doors
240ohm = traction control off
300 ohm = vcs off
The problem is I want to use controls on my steering wheel, but it's output is only two leads, that vary in resistance depending on what button is pressed. I originally was going to send 12v accross it, and then use different amperage rating transistors as switches that would only trip according to a certain resistance, but the problem with that is a low resistance will produce a high current that will also trip all the smaller transistors.
Is there anything out there I can use?
For example:
80ohm = lock doors
150ohm = unlock doors
240ohm = traction control off
300 ohm = vcs off
The problem is I want to use controls on my steering wheel, but it's output is only two leads, that vary in resistance depending on what button is pressed. I originally was going to send 12v accross it, and then use different amperage rating transistors as switches that would only trip according to a certain resistance, but the problem with that is a low resistance will produce a high current that will also trip all the smaller transistors.
Is there anything out there I can use?