My goal: convert an ABS sensor output to a square wave suitable for a microcontroller, *without interfering with other systems reading the ABS sensor*.
All the simple circuits I've seen for converting ABS sensor output to a square wave tie one leg to ground. This makes sense if the sensor isn't used for anything else or if we're on a completely isolated circuit from the vehicle main power, but if an existing ABS computer is trying to bias the ABS sensor, tying one leg to ground would conflict with this, right?
Is there any safe way of splicing an ABS signal and converting to a square wave without interfering with an existing ABS computer?
All the simple circuits I've seen for converting ABS sensor output to a square wave tie one leg to ground. This makes sense if the sensor isn't used for anything else or if we're on a completely isolated circuit from the vehicle main power, but if an existing ABS computer is trying to bias the ABS sensor, tying one leg to ground would conflict with this, right?
Is there any safe way of splicing an ABS signal and converting to a square wave without interfering with an existing ABS computer?