Post by bvandiepenbos on Feb 6, 2015 12:36:53 GMT -5
Just read about cheap and simple height probe by Michael Hackney on the SeeMeCNC forum... you don't even need a dial indicator !! ...
(The touch probe is simply a 1/4" or so rod about 1/4" tall that has a wire attached. Another wire is attached to your hot end. These two wires run into your RAMBo on the Z min switch input. When the nozzle touches the probe, it completes the circuit, triggering a "touch". This is very reproducible and accurate and used on CNC machines. The movement of the nozzle is done via a gcode script similar to the one Jim created. As the nozzle moves to a new point, you just position the probe under it and wait for the touch. I did it in 3 minutes last night. Very simple, very effective, very cheap, very convenient.)