homing: y-works ok, x-movement very slow. (config added) (Jun 7, 2016)

homing: y-works ok, x-movement very slow. (config added)

Started by taaltio on Jun 7, 2016 in TinyG Support. 1 reply, last activity Jun 8, 2016.

taaltio Jun 7, 2016 #

I have identical x and y axis (same type of motor, same type of switches) ,same config. With
G28.2 Y0
the Y homing works ok, and takes few seconds.
with
G28.2 X0
the X homing works, but the motor runs at very slow speed (1 % of what it should). The homing swithh signal Xmin works ok, I cerified it with multimeter (3.3v when in home-position).
The configuration of homing is:
$xsx 0
$xsv 500
$xlv 100
$xlb 50
$xzb 10
$ysx 0
$ysv 500
$ylv 100
$ylb 50
$yzb 10

https://www.dropbox.com/s/bjdnf5rzh2eahsf/tinyg_config.txt?dl=0

cmcgrath5035Staff Jun 8, 2016 #

You apparently have a very fine thread screw machine of some sort ($_tr=2mm).

Are you running the machine from CoolTerm?
Your value of $si=100000ms is very high, could confuse ChiliPeppr which is status driven. More typical is $si=500.

Does the machine jog appropriately?
Are you sure machine isn't binding in x direction?

Have you tweaked the motor current pots at all?

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