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Messages - wild.bill

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1
T2 Engraving / Re: 3000mW blue cnc laser engraver Universal Engraver
« on: March 26, 2020, 05:08:30 PM »
I don't see that board listed any more

2
T2 Engraving / Re: 3000mW blue cnc laser engraver Universal Engraver
« on: March 26, 2020, 02:23:35 PM »
Bill - You might want to looking into the grbl esp32. Very active group. i have a simple board that just maps the ESP to Nano pins.

I am liking the STM32 Nucleo 64 because its designed to work with UNO shields, and I have an UNO CNC shield ready to go on. This dates back to when I was using a UNO with the shield on my 0510 ACRO laser prior to installing the smoothie board. If this works (and it should) it will be faster because the Nucleo 411 is 100mhz and the Smoothie is only 80mhz and it should be less than half the cost of a smoothie board. I should be able to get the esp32 code working on this board, worst case is editing the output pins.

I need to go through all my old stuff and see how many UNO shields I have and what they are.

3
T2 Engraving / Re: 3000mW blue cnc laser engraver Universal Engraver
« on: March 26, 2020, 02:12:59 PM »
I am using T2 and all of my nano's are loaded with 1.1f direct with no boot loader. Not much difference between 1.1e and 1.1f but mine is a custom build for homing separated for x and y. Only down side is you need to use an ISP to change any software since there is no boot loader.

A lot of the early controllers didn't have a pull down on D11 so there was a pulse which caused the laser to light with a quick pulse when the nano booted.

4
T2 Engraving / Re: 3000mW blue cnc laser engraver Universal Engraver
« on: March 26, 2020, 12:27:10 PM »
Bill - You might want to looking into the grbl esp32. Very active group. i have a simple board that just maps the ESP to Nano pins.

I will look at that. The Blue Pill board is such crap I am returning it as unusable.

5
T2 Engraving / Re: 3000mW blue cnc laser engraver Universal Engraver
« on: March 26, 2020, 09:42:50 AM »
Now that you have the ISP built - you can load the GBRL program into the Arduino directly and not have/use the boot loader. Don't know if you are getting the laser flashing on when you boot the controller but not having the boot loader makes it go away.
You can have a lot of fun and learn a lot by playing with these things.

On a similar path I spent last night figuring out how to load the boot loader into a Blue Pill (STM32 board) That I am going to load GRBL 1.1f into. This board will work in the Adrunio development environment. I am planning to make a small adapter board so I can replace the nano with this much faster processor.

6
General Discussion / Re: Nano bootloader
« on: February 13, 2020, 08:28:32 PM »
Yes you use the header. The USB port is not used at all when programming this way. By not having  the boot loader you also don't have the pulse to the laser during boot.

7
General Discussion / Re: Nano bootloader
« on: February 13, 2020, 07:33:04 PM »
I have used an AVR ISP Programmer - I use it to load code without loading a bootloader, but with the Arduino software you can load a new bootloader.

8
General Discussion / Re: T2 Laser or Lightburn??
« on: January 08, 2020, 12:07:16 PM »
Or be like me and have both - they both have unique features that have a lot of value.

9
Engraving / Re: White tile painted with flat white primer
« on: January 02, 2020, 06:03:46 AM »
I found the process on a laser facebook group, Norton White Tile Method.
It is done with a positive image. Where the laser hits is where it turns black.
I guess the key is using a flat white primer.

10
General Discussion / Re: Run-time meter
« on: January 01, 2020, 07:32:53 PM »
my only watt/hour meter is on the side of the house

11
Engraving / White tile painted with flat white primer
« on: January 01, 2020, 06:17:17 PM »
Not sure I understand fully how it works but I painted some white tiles with flat white primer and then etched images. The places where the laser burns makes the tile dark.
So here are a few I made this week using my ACRO system with an old 2 Watt laser.

12
General Discussion / Re: Run-time meter
« on: January 01, 2020, 06:05:46 PM »
I was thinking more like a watt/hour meter to measure how much energy you are putting into it and for how long.

13
Other Software / Re: T2Laser Software
« on: December 30, 2019, 06:43:38 AM »
I use both 3mil and 7mil mylar sheets to make stencils for airbrushing but use the CO2 laser to cut the designs.

The only thought for the diode laser is to paint it black then cut. Windex or Alcohol to clean the paint off after its cut and not hurt the mylar.

14
Cutting / Re: Sand Blasting Stencils
« on: December 08, 2019, 12:27:24 PM »
Timing is everything - I just finished cutting some stencils on 7 mil Mylar for airbrushing and they came out very clean using the CO2 laser. I have a vinyl cutter as well and what takes minutes on the vinyl cutter takes seconds with the laser and I am getting cleaner edges with the laser.

15
Projects / Re: stuff I have been engraving...painted tiles
« on: May 13, 2019, 06:47:36 AM »
The actions that I have are specific to Photoshop but the basis of the edge enhancement is the "unsharp mask" tool - amount 400% radius 3 - 3 1/2.

If you have PaintShop Pro it can do unsharp mask and I would assume that GIMP does as well. Then you can also play with brightness.

Just a lot of trial and error, I just picked up another 300 tiles in various sizes.










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