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Messages - Joshua

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1
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: April 11, 2012, 06:10:13 AM »
Tweakie,
Thanks you brought up a good point that I didn't think about, condensation. I was so focused on cooling the fluid below 25 Deg.C. I didn't take that into account. Especially here in Hawaii where the humidity is high during the summer months. I think you are on to something with the "beer cooler" ;) looks like I will be insulating the Laser tube housing, pumping chilled air as well as chilled fluid.
I could see it now "Laser by Day, Beer Cooler by Night" :)

Thanks

Joshua

2
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: April 10, 2012, 10:33:22 PM »
Mahalo Tweakie,
I was just wanting to know how the cooling system worked out with the CO2 Laser. Does it keep the laser cool during long run times or duty cycle work? I live in Hawaii where the ambient temperature is over 80 deg Fahrenheit. I'm thinking that I may have cooling problems with my new machine, what do you think? Should I build/buy some sort of refrigeration/water cooling system Kinda like what a saltwater fish tank would use? ???
Thanks Josh

3
just checked out your website... sweet laser ;) I just ordered a laser. any must have software, any words of wisdom


4
Thanks Tweakie
This is something that has me scratching my head. I had the drivers set at the lowest current setting (2.8A Peak/2.0A Rms). Your right about the BOB I was planning on replacing it from the start. Did some testing on the bob and it didnt go bad. I just recived two bad drivers, whats the luck of that.

5
Third party software and hardware support forums. / Hardware problems
« on: April 09, 2012, 06:20:06 PM »
I just built a cnc router and I'm having some problems that I just cant figure out. I bought a package off eBay from China (www.longs-motor.com) for all the electronics, it was a 4 axis setup, Nema 34 motors, DM860A drivers, and a breakout board. Using a old emachine cpu, XP, 1ghz ram, on mother board printer port.
So here is the problem. Last night I hooked everything up and went through the setup process and had it cutting circles and getting ready to set the backlash comp up, and decided to wait till today to finish. Went out this morning and started the machine up..... got Z axis, got X axis, no Y.... what the heck... so I checked the ports and pins setting, then switched drivers to a spare one, got movement in the -Y direction when jogging -Y and +Y. So then I thought maybe the BOB, wires, or port is bad. Pulled out the trusty Multimeter and went to checking pins. Everything from the computer, cable, to the BOB looked fine..... The BOB must be bad and fried the driver..... I better stop before I fry my spare driver..... So I ordered two breakout boards (1 spare) and another spare driver....  Went to movies and messed around but still was baffled how one day it worked and the next it didn't (this is new stuff).. So I did some more checking. Took the Y axis motor and hooked it to the X driver and the motor worked fine. "Good the motors not bad"   So then I hooked the X axis Puls and Dir wires to the Y driver that only moved one way (spare driver)..... Still only moves one way "Bad driver"    OK Lets hook the original Y axis step driver to the X axis Motor and Puls and dir and power... Nothing .........  a few choice wards about china and so on 
So this is my question, whats the chances of getting one bad step driver (the one that moved only one direction), and a Breakout board going bad frying a step driver ( original step driver). Or is there something I'm missing here... 

6
I just built a cnc router and I'm having some problems that I just cant figure out. I bought a package off eBay from China (www.longs-motor.com) for all the electronics, it was a 4 axis setup, Nema 34 motors, DM860A drivers, and a breakout board. Using a old emachine cpu, XP, 1ghz ram, on mother board printer port.
So here is the problem. Last night I hooked everything up and went through the setup process and had it cutting circles and getting ready to set the backlash comp up, and decided to wait till today to finish. Went out this morning and started the machine up..... got Z axis, got X axis, no Y.... what the heck... so I checked the ports and pins setting, then switched drivers to a spare one, got movement in the -Y direction when jogging -Y and +Y. So then I thought maybe the BOB, wires, or port is bad. Pulled out the trusty Multimeter and went to checking pins. Everything from the computer, cable, to the BOB looked fine..... The BOB must be bad and fried the driver..... I better stop before I fry my spare driver..... So I ordered two breakout boards (1 spare) and another spare driver....  Went to movies and messed around but still was baffled how one day it worked and the next it didn't (this is new stuff).. So I did some more checking. Took the Y axis motor and hooked it to the X driver and the motor worked fine. "Good the motors not bad" ;D  So then I hooked the X axis Puls and Dir wires to the Y driver that only moved one way (spare driver)..... Still only moves one way ??? "Bad driver"    OK Lets hook the original Y axis step driver to the X axis Motor and Puls and dir and power... Nothing >:( .........  a few choice wards about china and so on  >:D
So this is my question, whats the chances of getting one bad step driver (the one that moved only one direction), and a Breakout board going bad frying a step driver ( original step driver). Or is there something I'm missing here...  ???

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