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Messages - wild.bill

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Cutting / Re: Got the laser to cut heavy gasket material
« on: April 23, 2017, 04:44:37 PM »
If you have a compressor this will work fine

I use the valve on the side to adjust how much air you want, and it is strong enough to move aluminum chips so it should work well with the laser.

BenCutLaser / Re: Mega328P Microprocessor: Flash Problem?
« on: April 23, 2017, 01:50:37 PM »
try nano - which is an ATMega328P

Projects / Re: Slate Baby!!!!!
« on: April 23, 2017, 01:29:02 PM »
Ok - it is all your fault, I just went to Michaels and got 4 packages of slate coasters.

If things work out well there were another 10 packages still on the shelf.

Assembly Help / Re: Belt stuck in Aluminium Profile
« on: April 19, 2017, 04:43:36 AM »
I have found the cause of my problems:
The channels are 6.23mm wide on each profile - that looks good. But the belt differs in the width from around 6.07mm to 6.56mm. That might be the problem.
I will order new belts today and hope, that will solve this.


At 6.23 you have the proper channel width, the channel that I had problems with was 5.4mm. Buy a good quality belt and you should be fine.

Assembly Help / Re: Belt stuck in Aluminium Profile
« on: April 18, 2017, 06:19:46 PM »
I will jump in because I have seen this when I extended my first laser cutter.

There are a number of different companies that make 2020 rails and they are not all exactly the same size, and even the face of the opening is different on some. The maker of your kit might have bought some stock from a new source not realizing that the G2 belt would not fit.

What I did when I had the problem, and I am still using these rails today, is take the rails off the machine and use a good quality, long, fine file and open the channel up until the belt would work. I think I opened them up to 5.3mm.

It was a slow process and I adjusted the face of the rails be be the proper angle for the wheels that I was using but when I finished a had a smooth working machine. Short of buying new 2020 rails of the proper size this is the only option that I know of.

General Discussion / Re: Use arduino cnc shield to control laser?
« on: April 16, 2017, 02:25:59 AM »
You found the right words, -- this is a DYI Shield.

Now it will be recorded in the forum forever with a little detail.

General Discussion / Re: Use arduino cnc shield to control laser?
« on: April 15, 2017, 04:59:23 PM »
I like that - butterfly.

I actually have one of those in use on my large CMC-mill, all wires and very handy.

T2 Engraving / Re: EleksDraw - initial test results
« on: April 15, 2017, 04:57:38 PM »
After looking at what he has been creating I am ready to put a pen on the light weight CNC machine that I built and am no longer using. Inspired.

General Discussion / Re: Use arduino cnc shield to control laser?
« on: April 15, 2017, 04:53:38 PM »
No problem -- I was taking a long time writing and rewriting to make a point without being harsh.

The bottom line is you can do just about anything with the shield - if you know how. It's one step beyond but UNO with just a screw shield.

General Discussion / Re: Use arduino cnc shield to control laser?
« on: April 15, 2017, 04:32:51 PM »
Sorry for being blunt but if you need to ask - you should not be using this board.

All the shield has are the 4 stepper controllers and the only connectors on the board are for the motors and everything else you wire yourself and that includes the power. Its a very flexible board but you need to fully understand what and how things work and connect to use it. You also need a full understanding of GRBL because you need to compile your own firmware.

Post #3 already describes what is involved for a TTL laser.

Your probably better off with a nano based board that already has the connector that matches your laser.  My other board are of the old style (L1 & L6) so I have never used a 3 wire connector.

General Discussion / Re: Use arduino cnc shield to control laser?
« on: April 15, 2017, 02:45:16 PM »
Looking into using a conf shield, I found a shield and the creator suggested using the spindle control for the laser.

All the GRBL machines use spindle for the laser.

General Discussion / Re: Use arduino cnc shield to control laser?
« on: April 15, 2017, 11:45:32 AM »
For most people the CNC Shield is not the best option. I am a very long time builder of mechanical and electrical things, long enough that my early builds were wire wrapped. I also started using the UNO not long after they came out and have at least 1 of every Arduino board made. The CNC Shield itself is just a shield with 4 stepper drivers on it, nothing else. Anything else you have to work out yourself. Its that flexibility that has me using them.

General Discussion / Re: Use arduino cnc shield to control laser?
« on: April 15, 2017, 05:09:49 AM »
I have used them (I actually have 4 of them now) and had no problem, with an *

This board does not have a MOSFET on it, other than the motor controllers every signal is direct for the UNO pins. So  controling the laser it works best with TTL lasers where you supply the 12 volts to the laser from an external power supply and the TTL signal from the shield. Most of these boards were designed pre GRBL .9 so the spindle/laser signal is on a different pin. I controlled mine using the Z axis end stop pin on the board, it was swapped with the spindle for GRBK .9 and on.

If you don't have a TTL laser you can use an external MOSFET with power from an external supply and control the MOSFET from the shield.

A positive things is that all the home/endstop signals are available and I have a couple of machines with homing using this board.

So it does work and works well, its just you need to put a little thought and planning into what you are doing.


Trouble Shooting / Re: Laser randomly lowering power (OPEN)
« on: April 14, 2017, 06:05:47 PM »
That would lead me to believe that it can only be one of two things. Either there is a problem with the wiring to the laser - or the laser is failing.

Trouble Shooting / Re: Epic Fail!
« on: April 13, 2017, 07:13:22 PM »
I am into Porter's this month -- and just finished a couple.

I had the same reaction the first time I saw someone say they were using IPA then realized there were 2 kinds.

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