Hi,
Got a project that is a comm's sniffer / injector, project works fine however it needs two connections to work i.e. GND and test point as you would expect.
I had a thought and it's only a thought so no flames please, is it possible to only use one connection without having to find a common ground (by a wire that is) I saw mention of "virtual ground" not sure if this is what I'm talking about as it's all a bit heavy reading.
So question is, to pull a line high / low do I really need a wire connctingh to the GND on target?
Thanks
Steve