Hey All,

I'm very new to the 3D printing world but I wanted to ask if anyone has any
experience writing a python MACRO that lets you read the position data of
the extruder head. The examples are very minimal online and I can't really
find anything to receive the serial data. I want to be able to send and
receive position data through the MACRO and then send the read position
data via OSC.

Thanks!

It looks like entering   M114    in the box in the lower right & "Send"
will do the job.

*M114: Get Current Position<http://reprap.org/wiki/G-code#M114:_Get_Current_Position>
  *This causes the RepRap machine to report its current X, Y, Z and E
coordinates to the host.

For example, the machine returns a string such as:   ok C: X:0.00 Y:0.00
Z:0.00 E:0.00

I think he's looking for python script to send the m114 and read the results from the serial port.

It's pretty doable, you just have to send the command and read on the
serial port. But the problem is during the print, the host software will be
using the serial port. What is the application of this script?

Wait, nevermind... totally misinterpreted this. OP wants to make a
plugin/macro for pronterface. I can't really offer any meaningful tips,
other than using M114. Maybe somebody else with pronterface experience can
help you out.

Thanks for the replies guys. To be clear, I'm looking to write a
pronterface macro, which must be done in Python to interface with the
motors, send M114 signals to the motors to change it's position for
example, but most importantly, then read the current position. That's the
part I don't know how to do. How do you write a macro in python that can
read the current position data? This data is normally output via the serial
console, I just need programmatic access to it.

The purpose of this is to send the current position of the motors to
completely separate program via a network library (Open Sound Control).