gp

Replacing the TinyG resolved the issue, so I suspect it was in fact a driver problem.

I’m not near the machine that drives the TinyG today, but I happened to have a copy of an old TinyG config around, so I just rewrote the script. It’s very short:

#!/usr/bin/env perl
# Usage:
#   TinyG_config_mangler.pl < [input_file]
# Reads a TinyG configuration obtained via $$ and transforms it into
# set commands. Perhaps useful if you want to back up your config in a way
# that is easy to restore later on.
use strict;

# Config words to ignore
my @ignore_words = qw/fb fv hp hw id hv/;
my %ignore_map;
@ignore_map{@ignore_words} = ();

while (<STDIN>) {
	next unless m/^\[([a-z0-9]+)\]\s+.+\s+([\d\.]+)\s+.+$/ or exists $ignore_map{$1};
	print "\$$1=$2\n";
}

Here’s how it runs on my OS X machine:

gp@cheetah:~ % cat tinyg_config_sample.txt 
[1ma] m1 map to axis 0 [0=X,1=Y,2=Z...]
[1sa] m1 step angle 1.800 deg
[1tr] m1 travel per revolution 120.0000 mm
[1mi] m1 microsteps 8 [1,2,4,8]
[1po] m1 polarity 0 [0=normal,1=reverse]
[1pm] m1 power management 2 [0=disabled,1=always on,2=in cycle,3=when moving]
gp@cheetah:~ % ./TinyG_config_mangler.pl <tinyg_config_sample.txt 
$1ma=0
$1sa=1.800
$1tr=120.0000
$1mi=8
$1po=0
$1pm=2

Hope someone finds it useful! Maybe I should put it on the Wiki or something?

As a disclaimer: it’s pretty fragile, and it would be easy for the Synthetos folks to accidentally create a text string that would break that regex. Please use with caution! No warranty, might crash your mill or burn your eye out with your laser cutter, etc.

I think the right way to do it is to change the TinyG firmware to support an “output appropriate set commands” option in addition to $$. I’ll fork the code and see if I can find a relatively easy way to implement that.

• This reply was modified 10 years, 5 months ago by gp.

Saving configuration parameters: I just wrote a small script to take the output of $$ and transform it into the relevant set commands — no big deal. The hard part is remembering to run it!

Chilipeppr vs Coolterm: No change, which is what I expect. Once the TinyG gets G1 Y100 F150 the sender is out of the picture….