Full Spectrum Laser Cutter

Freeside's Full spectrum 40w laser cutter was a project given to us by the fine folks of Decatur Makers. It's a 40w cutter that was received without controller and with a broken power supply, and has been getting reworked with a new power supply and arduino uno controller running GRBL firmware to allow it to run Laserweb software for ease of use and open-source goodness on the hardware and firmware side.

Microcontroller:

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Arduino Uno running GRBL firmware. [link or code for firmware]

Power supply:

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40w CO2 laser power supply from ebay https://www.ebay.com/itm/110-220V-40W-CO2-Laser-Power-Supply-Engraving-Engraver-Cutter-Machine/302659966406?epid=1773715012&hash=item4677f095c6:g:o-wAAOSw18xanYWm:rk:3:pf:0

With high efficiency and short response time, this laser power supply is dedicated for CO2 laser device. This power supply has excellent compatibility with laser device and can be directly connected. It can take feedback interface which can be used in closed-loop control and testing the working current of laser. With this power supply, laser device will be easily started up and well operated with higher conversion efficiency and longer expectation of life.

Feature:

   Protection switch: test the external water, ventilation, etc., to protect laser device
   TTL voltage level control: can be set high or low lever
   Easy control: the start and stop of laser can be easily controlled by TTL level.
   New function: timely scene judging which part is damaged, laser tube or laser power.
   Good compatibility: it can be applicable to 40W laser tubes from different manufacturers.
   High Security: input and output of power supply are separated completely to avoid getting an electric shock.
   Open circuit protection: with well-grounded enclosure, the power supply can work in open-circuit for a short time, which could avoid the damage of laser power supply because of the bursting of laser tube, thereby enhancing the life of power supply.

Application:

   The power is adjustable through it's TTL control or by a 5K variable resistor, small design with excellence PWM control circuitry. It supports any CO2 laser for up to 40W. Application for engraving, seal-cutting, etc.

Laser power adjustment:

   By adjusting the output current of power supply through resistor
   Through PWM control (magnitude being TTL voltage level)

Specification:

   Output power: 40W
   Relative humidity: ≤85%.
   Cooling way: natural air cooling
   Input voltage: AC 110V-220V adjustable
   Maximum output voltage: DC 25KV
   Maximum output current: DC 20mA
   Environmental requirements: temperature -10~ 40℃
   Isolation Withstand voltage: Input-output, input-enclosure: AC2000V-10mA-60s;
   Response time (from time of input being available to the output current being up to nominal value): ≤1ms.

Package Included:

   1x 40W Power Supply

Laserweb

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Open source laser cutter software for Gcode generation. Can do vector and raster cutting. [Insert laserweb settings]