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Topics - curious aardvark

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Long story short.
I bought a cheap a3 engraver from hong kong.
Came with a 12v 500mw that lasted all of 3 hours and then refused to burn anything.

I bought a 2.5watt that came with a little daughter board.
First pic is my current controller board, an arduino nano.

Just has a 2 pin output for a 5 or 12v laser diode. Works well actually - currently using a 1watt 5 volt, designed for those teeny tiny neje usb powered engravers.
Was really cheap and works way better than the 12v the machine came with.

second pic is the 2.5 watt laser and board. Has 2pin 12 volt power plug and two 2 pin sockets on the board.

third pic is the two 2 pin sockets on the daughter board, that I presume are supposed to connect to the controller board.
For the life of me I cannot find any such controller board online.
The eleksmaker boards have three pin connectors. The arduino also seem to have 3 pin connectors.

There are a lot of people selling these lasers with the same daughter boards - so presumably there must be a way of utilising them.
I'm currently drawing a total blank.

Please help :-)

LaserGrbl / Creating gcode loops for lasergrbl buttons
« on: June 02, 2018, 08:21:12 AM »
I have just spent an hour ot two going through every gcode loop method I can find (more than you'd think)) and none of them work for lasergrbl buttons.

I just want to repeat the outline for the thing about to be cut.

I can do it once with low power laser, no problem.

(start of loop would go here)

G0 X
Y[bottom] F3000
M4 S200
G1 X
G1 X
G1 X
G1 X

(end loop would go here)

G0 X0 Y0 F3000
But to get something correctly placed for engraving I need to remotely repeat that either till told to stop or a set number of times.

Anybody have a clue how to do this ?

I'm using a cheap eleksmaker a3 clone, with a few mods. So positioning of parts to be cut/engraved is a manual job and fairly crucial. 
Also I'm extremely new to g-code :-) So any explanations need to be pretty basic.

I have created a button that runs the outline 5 times with low laser, simply by copying and pasting the middle bit 5x.
Not elegant and not easy to change the number of iterations. But for the time being, it'll do the job. I suppose I can paste it 10x and make another button.
But would be a lot easier if you could just change one number and that would change the number of frame outlines.

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