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schlotzz / CoreBeam

CoreBeam is a DIY LaserEngraver based on CoreXY kinematics
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laser cutter project #1

Open splitn2 opened 8 years ago

splitn2 commented 8 years ago

Hi, I have a spare Raspberry Pi and already a GRBL on Uno and 3 axis 8825 shield, and motors, so I am keen to trial this laser cutter. I was interested in what is the difference between your GRBL variant and the standard? I am running GRBL 0.9J at the moment with UGS 2.0 on the Raspberry Pi. Do you have a schematic of the electronics you used? What laser did you end up going with? Thanks heaps I hope you don;t mind me pestering you. cheers, Richard

schlotzz commented 8 years ago

Hi splitn2. Nice to hear that you'll give CoreBeam a try. The difference between the official and my branch of GRBL are some bugfixes in the CoreXY kinematics homing algorithm, that haven't been merged to master, yet. I'm using UniversalGcodeSender with no problems on my Raspberry PI for controlling my laser, too. It's a pity but I haven't made any documentations on the electronics, yet. Basically it's the Arduino UNO with GRBL shield / A4988 stepper drivers and a small selfmade MOSFET board to drive the fan / laser diode driverboard with corresponding pins on the GRBL shield. For the laser diode a small current limiting board of a chinese ebay vendor was used, but I'm going to replace it with a cheap TTL laser driver soon. As laser a blue 445nm laser diode is used. I took a M140 2W+ laser diode with housing and G2 lens. It performs quite well, even if it's driven below 2W.

Please feel free to ask whenever you need more information on building your CoreBeam. I'm looking forward to seeing a new build ;-)

Regards, Dominik

These are some parts needed for electronics:

splitn2 commented 8 years ago

Hi Dominic, thanks very much for responding, very appreciated.

I’ll press on with my CoreBeam build once I get another larger CNC project out of the way. I am almost finished building a large very heavy duty steel xyz router, with MACH3 control. When I have that running some of the smaller projects will be customized machines running specific jobs for engraving and cutting soft materials.

So much fun these projects eh!!!!!

Cheers

Rich

many thanks

Richard Harcourt

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From: schlotzz [mailto:notifications@github.com] Sent: Saturday, January 16, 2016 8:44 PM To: schlotzz/CoreBeam Cc: splitn2 Subject: Re: [CoreBeam] laser cutter project (#1)

Hi splitn2. Nice to hear that you'll give CoreBeam a try. The difference between the official and my branch of GRBL are some bugfixes in the CoreXY kinematics homing algorithm, that haven't been merged to master, yet. I'm using UniversalGcodeSender with no problems on my Raspberry PI for controlling my laser, too. It's a pity but I haven't made any documentations on the electronics, yet. Basically it's the Arduino UNO with GRBL shield / A4988 stepper drivers and a small selfmade MOSFET board to drive the fan / laser diode driverboard with corresponding pins on the GRBL shield. For the laser diode a small current limiting board of a chinese ebay vendor was used, but I'm going to replace it with a cheap TTL laser driver soon. As laser a blue 445nm laser diode is used. I took a M140 2W+ laser diode with housing and G2 lens. It performs quite well, even if it's driven below 2W.

Please feel free to ask whenever you need more information on building your CoreBeam. I'm looking forward to seeing a new build ;-)

Regards, Dominik

These are some parts needed for electronics:

— Reply to this email directly or view it on GitHub https://github.com/schlotzz/CoreBeam/issues/1#issuecomment-172169997 . https://github.com/notifications/beacon/AIcd55w6xV7OroQUGXJUdAf0EN9PYFcEks5paewtgaJpZM4HEk5M.gif