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Messages - Gunit

Pages: [1] 2
1
T2 Engraving / Re: Default firmware
« on: February 11, 2019, 10:59:54 AM »
I see, Thank you Sir!

2
T2 Engraving / Re: Default firmware
« on: February 11, 2019, 06:40:07 AM »
COOL,
The board is recognized as "generic nano" so when i get home i will have a look, Can you say what advantages i would get with your FW over the one i have now besides not needing to set Origin Workpiece?
Thanks for your time and help.
G

3
T2 Engraving / Re: Default firmware
« on: February 10, 2019, 04:14:36 PM »
Hey Zax,
So you don't think your FW will work on this board? it originally came with GRBL 0.9 on it then I just flashed the openbuilds FW and I needed to use Xloader to do that too.
Thanks for all the help on this. ;)

4
T2 Engraving / Re: Default firmware
« on: February 10, 2019, 03:41:13 PM »
What I found is when I do a new image and laser control window opens, I need to rehome and then go and click on "Set Origin Workpiece"  and it will work, If I don't do the "Set Origin Workpiece" it will go the wrong way and crash into my limit switch. Operator error :-[

5
T2 Engraving / Re: Default firmware
« on: February 10, 2019, 02:03:48 PM »
Well I just did a test and all is working, it is going in the right direction, I turned up the laser to 1000 and it worked, don't know what I did when I first tried it but now it is working. this with the setting I posted. I did the 50mm square and it did it right.

6
T2 Engraving / Re: Default firmware
« on: February 10, 2019, 01:09:53 PM »
Laser power was not right either.

7
T2 Engraving / Re: Default firmware
« on: February 10, 2019, 01:02:59 PM »
I should of posted the board im using, Im not using there board. https://www.amazon.com/gp/product/B07BMSH49Y/ref=ppx_yo_dt_b_asin_title_o01__o00_s00?ie=UTF8&psc=1

All thing seemed to work, the problem i was having was after i did a homing cycle and then would send a file it would go the wrong way and crash into my limit switches.

8
T2 Engraving / Default firmware
« on: February 10, 2019, 12:23:45 PM »
Hi,
I'm trying to flash the default firmware and can't get it to flash, I have GRBL 1.1g on it now with openbuilds firmware, Do I need to load the default FW? if so can someone point me to the HEX file so i can use Xloader to flash.
Thanks for your help.
G
P.S.
This is the setting I have on the board.
Connected COM8 115200
Grbl 1.1g Ready
Alarm!
Ready
$0=10 Step pulse, microseconds (10)
$1=25 Step idle delay, milliseconds (25)
$2=0 Step port invert, mask (0)
$3=2 Direction port invert, mask (0)
$4=0 Step enable invert, boolean (0)
$5=0 Limit pins invert, boolean (0)
$6=0 Probe pin invert, boolean (0)
$10=1 Status report, mask (1)
$11=0.020 Junction deviation, mm (0.020)
$12=0.002 Arc tolerance, mm (0.020)
$13=0 Report inches, boolean (0)
$20=0 Soft limits, boolean (0)
$21=1 Hard limits, boolean (0)
$22=1 Homing cycle, boolean (0)
$23=3 Homing dir invert, mask (0)
$24=100.000 Homing feed, mm/min (100.000)
$25=1000.000 Homing seek, mm/min (1000.000)
$26=50 Homing debounce, milliseconds (250)
$27=5.000 Homing pull-off, mm (1.000)
$30=1000 Max spindle speed, RPM (255)
$31=0 Min spindle speed, RPM (0)
$32=1 Laser mode, boolean (1)
$100=57.143 X steps/mm (80.000)
$101=57.143 Y steps/mm (80.000)
$102=57.143 Z steps/mm (80.000)
$110=5000.000 X Max rate, mm/min (5000.000)
$111=5000.000 Y Max rate, mm/min (5000.000)
$112=5000.000 Z Max rate, mm/min (5000.000)
$120=500.000 X Acceleration, mm/sec^2 (800.000)
$121=500.000 Y Acceleration, mm/sec^2 (800.000)
$122=500.000 Z Acceleration, mm/sec^2 (5000.000)
$130=800.000 X Max travel, mm (400)
$131=300.000 Y Max travel, mm (300)
$132=70.000 Z Max travel, mm (200)

9
General Discussion / Re: How to TTL a laser?
« on: February 03, 2019, 04:47:44 AM »
Thank you, hopefully you've received the license key but if not send me a PM with your e-mail address.
I got it.
Thank you.

10
Spare Parts Sources / Re: Upgrading an old 2-Wire Engraver
« on: February 03, 2019, 02:06:06 AM »
Supplying a 5V CPU signal to the input of a 2-wire 12V laser module will not drive the laser. Someplace you need a TTL to Laser Power converter. On the newer "TTL" modules the power transistor is part of the circuit board mounted on the module itself. On other systems the power transistor is mounted on the controller. Both schemes allow you to deliver pulse modulated signal to the laser diode. I have both and cannot say which is better.
Littel more to it then I thought. :-[
Thx

11
Spare Parts Sources / Re: Upgrading an old 2-Wire Engraver
« on: February 03, 2019, 02:03:36 AM »
The Nano D11 output is the laser PWM so if you have a TTL laser you just connect power (+ / GND) directly to the power supply and then connect D11 to the TTL input and one of the GND's to the laser GND.
Thank you.

12
General Discussion / Re: How to TTL a laser?
« on: February 02, 2019, 10:04:05 PM »
T2Laser has velocity mode which will create grey scale on any laser or dithered mode which simulates grey scale.
Well I went and purchased it, just waiting for my code.... ;)

13
General Discussion / Re: How to TTL a laser?
« on: February 02, 2019, 05:19:39 PM »
T2Laser has velocity mode which will create grey scale on any laser or dithered mode which simulates grey scale.
COOL will look into that.
Thank you.

14
General Discussion / Re: How to TTL a laser?
« on: February 02, 2019, 05:17:50 PM »
For cutting we typically run the laser at full power and change the speed to determine the depth of burning.

For etching it may vary slightly depending on medium and technique. For etching Black & White style images it is the same as cutting. For slate I use  a speed around 600 mm/min while woods may get 2000 mm/min.

For getting grey scale effects we need to control the energy delivered to the medium per unit time. This can be accomplished by varying either the speed or the laser power. The variable laser power is accomplished by turn the laser ON/OFF at a fairly high rate (1000 times per second). This is called PWD. With an Adruino CPU there are a limited number of pins that support PWM. The older controllers routed the laser ON/OFF to a pin that did not support PWM. Later board revisions contained a jumper to allow user selection.

In addition the firmware must match the board I/O pinout. Most generic boards use D11 for laser power and the newer GRBL firmware is built for this. PWM laser power is often referred to as spindle speed when used to control milling machines.
Thank you for the info

15
General Discussion / Re: How to TTL a laser?
« on: February 02, 2019, 03:24:10 PM »
If you have a 2.5W 2-wire laser module it needs both GND and +12V at about 2 amp. The processor cannot directly deliver this mount of power. You need to provide a power transistor. Most controller boards designed to drive lasers contain a power MOSFET for this purpose and  2-wire header to connect to the laser module.
I'm not sure I understand, I'm New it this, I apologise :-[ , my laser is working just fine for normal engraving and some cutting, I was trying to engrave a picture and can't, so I thought I need TTL to do that?
Thank you for trying to help me ;)

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