Lost Step Counter
12 Oct 2018 12:37 #118707
by DieselJoe
Replied by DieselJoe on topic Lost Step Counter
Hi, yes in a perfect world everything is perfect... But not in my garage 
.
Seriously it helps setting the proper speeds , acceleration, etc.
And this is how I discovered that estlcam doesn't properly use my hybrid steppers.
After 1 hour of milling, I lost 0.5mm
.Seriously it helps setting the proper speeds , acceleration, etc.
And this is how I discovered that estlcam doesn't properly use my hybrid steppers.
After 1 hour of milling, I lost 0.5mm
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12 Oct 2018 20:30 #118726
by andypugh
Replied by andypugh on topic Lost Step Counter
This seems to work.
Save this as a file called "miss_step" and make it executable.
Then load it in the HAL fileThen in the HAL file connect the pins for each axisOr whatever signal axis.0.motor-pos-cmd is linked to
Save this as a file called "miss_step" and make it executable.
#!/usr/bin/python
import hal, time
import sys
from Tkinter import *
import tkMessageBox
root = Tk()
root.withdraw()
h = hal.component("miss_step")
count = 1
for opt in sys.argv[1:]:
(dummy, count) = opt.split("=")
if dummy != "count":
count = 1
pins = []
for i in range(int(count)):
p1 = "axis.%i.pos-cmd" %i
p2 = "axis.%i.motor-pos-cmd" %i
d = 0
t = [p1, p2, d]
pins.append(t)
h.newpin(p1, hal.HAL_FLOAT, hal.HAL_IN)
h.newpin(p2, hal.HAL_FLOAT, hal.HAL_IN)
h.ready()
try:
flag = False
while 1:
time.sleep (1)
for t in pins:
if h[t[0]]-h[t[1]] != t[2]:
flag = True
t[2] = h[t[0]]-h[t[1]]
if flag == True:
flag = False
message = ""
for t in pins:
message = message + t[0] + " = %f\n"%t[2]
ret = tkMessageBox._show("Homing Position Differs",
message,
tkMessageBox.QUESTION, tkMessageBox.OK)
root.update()
except KeyboardInterrupt:
raise SystemExitThen load it in the HAL file
loadusr miss_step count=3net check0 miss_step.axis.0.pos-cmd axis.0.pos-cmd
net Xpos miss_step.axis.0.motor-pos-cmd
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