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Messages - nobby

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111
General Mach Discussion / I feel somewhat stupid asking but.......
« on: February 23, 2014, 03:00:44 PM »
I have connected the limit switches
top of the z
left for x and y
they are closed.
my question is - how do I actually connect them to the break out board.
on the ports and pins screen it says
X++
X--
X HOME
am I supposed to come out of X=+ and back in after the switch to X--
it says only pins 10, 11, 12, 13 and 15 are inputs.
that mean I  the other pins are outputs?
/\ I have looked everywhere this evening on how to, I fear its something simple, but alas I simply don't know what to do.
??????????????????
do I take 5 volts to the switch and then into the pin? does it simply want to see 5v?-
must ask as I don't know and don't want to fry it



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also, as the axis travels and clicks the switch, how farther is it supposed to travel IF at all?
is that what  the slow zone is all about - do you need it?
if its set to one  - is that 1 inch of travel allowable after the switch is triggered, as my z has 5mm the y has 5mm and the x has nothing bar the 10mm bumper

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also whilst setting up the table display mode, and entering 500 for a 500mm travel, the scale looks way out - 30.00 seems correct what am I doing wrong?

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112
General Mach Discussion / Re: Machine running in slow motion
« on: February 22, 2014, 02:14:21 PM »
What is a controller knob?

he may have the plug in thing for the bob set to feed rate - over ridsing the onscreen settings
when its unplugged it defaults to 1? as the feed-rate instead of 100?
so his half hour job should have been 100 times faster on full feed rate?

-I only guess this as I just did this today whilst changing my 64 imperial steps per at 26500 to metric 50 at 20000, I unplugged the control knob doofer, then run the exact same 100 by 50mm box and it slowed right down

after I switched back to 64 imperial then backl again, then again and one more for luck, after changing the 20000 steps per to 200000, did I then think to retrace my steps and plug back in the controller knob doofer, and it came back. wasting a few hours that I should have been doing the limit switches.

113
General Mach Discussion / Re: Machine running in slow motion
« on: February 22, 2014, 10:13:00 AM »
hello
did you unplug the controller knob from the break out board
as it maybe set to feedrate control as standard
I just did this myself and was scratching my head for a while, as it overides the feedrate on screen if its set that way -  but unplugged.

114
General Mach Discussion / Re: newbie help please
« on: February 21, 2014, 04:44:08 PM »
oh - I hear you!!!
no, its simply a ground wire riveted to the little square cans that cover the motors!! - phew.
all the cabling is original and sheilded, the earth/ground wire comes down with them inside the sheilding.
just wonderedif I connect these three grounds to the enclosure/box, then take one from the power supplies earth ground to that, the eclosure is metal
and the psu is bolted to that - so just to the case then?

what do you mean by 'star'

115
General Mach Discussion / Re: home plus and minus = limit switches
« on: February 21, 2014, 03:51:26 PM »
You can use 3 pins for your limits or 1. Mach's default is to home 1 axis at a time. It knows which axis is in motion and what direction. It is merely waiting for the trigger to indicate it has arrived at a predetermined location.

Constant, in electrical terms this is "closed".

What is 610 square in the doofer? Sounds like you are hitting someone with your fist.

great so allocate simply the two pins for the 3 axis - 3 wires for each pinwith the switches closed 'I don't know how they are on this machine - I hope they are closed'
2ft =610mm work area bed size.

116
General Mach Discussion / Re: home plus and minus = limit switches
« on: February 21, 2014, 03:33:44 PM »
TALK ABOUT BEING A NOOB
I didn't even realise that you simply used the arrow keys to jog the blasted machine about
HA HA HA HA HA HA HA

been twisting the fecking knobs on the  motors

HA HA HA HA HA HA HA
http://www.youtube.com/watch?v=R3futACR6dM

so the steps per is a simply calculation?

simply times the setting you have on your driver by 400?
2 =800
4=1600
8=3200
16= 6400
32 = 12800
64 = 25600

so him setting it at 2000
his drives are set to 'metric 5

but it doesn't matter anyway? imperial or metric.......
or does it show it in the graph

what is the optimum trapesoidal shap in the tuning you want then?

I though that the motor turned 360 degrees using 200 steps?
have i got something set to half?

do i need to set the steps per to metric ? - i do don't I ?

117
General Mach Discussion / Re: home plus and minus = limit switches
« on: February 21, 2014, 02:56:59 PM »
http://www.youtube.com/watch?feature=player_embedded&v=ma7lMocQbv0

aha!!
so it does auto-home, thus you only need limit switches 'wired close constant' left and front - tell the machine 610 square in the doofer.
z axis is a minus number from the limit switch down = thats why I was going the wrong way with it earlier.

cool beans, so connecting it to the break out board, xy and z 3 pairs of wiresand 6 pins.

i meant to type 'squealing' motor couplers squealing on the shafts.

118
General Mach Discussion / home plus and minus = limit switches
« on: February 21, 2014, 01:28:51 PM »
can you have seperate pins for an input of x y and z - or do all three go to one pin?
for the limit thing?

i think i have limit switches on both ends of each axis?
but only 2 wires coming down.

how do I using the motors - simply move the head manually on screen?

or how does the homing thing work, does it look for the switches front and left?

if for example I am only ever loading 2 foot square sheets in, can i set the machine to home at the front and to the left with the limit switches, so it knows it can only travel 2 foot back and 2 foot to the right?

how does it work please?
in laymans terms?

i think i understand assigning a pin on the bob to mach 3 home in the pin set up, but do not understand the purpose? - is it to simply shut the machine off from squaling the couplers on the shafts - yes i did just do that
 :o





119
General Mach Discussion / Re: newbie help please
« on: February 21, 2014, 12:42:13 PM »
right oh, next on the adjenda are the limit switches, whats all that about
can I assign a 2 foot square work area to mach3?

also, i have earth/ground wires fitted at the motors, do I attatch them to the earth on the power supply.






120
General Mach Discussion / Re: newbie help please
« on: February 21, 2014, 11:45:51 AM »
thats the trick
fgantastic

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