Valery Valef

Saved 8/14/19 8:18 AM from hand-made articles

The laser engraver the hands, from DvD of drives  See details »

 
Video subtitles:
  • 00:00: zdarov people in this video I'll show you how to make a laser engraver from old DvD drives so first thing we'll take this one cap so that it does not interfere with further disassembly well, after you can disassemble the case itself pull out handkerchiefs
  • 00:32: not forgetting to unfasten the trains but that's what interests us take away under this lid are lasers
  • 01:13: and here they are, but we are only interested in this one this is a divisible writing laser Well, here we see neodymium magnets take will come in handy the engine bites off the train and solder to the remaining piece Do not try to solder the cable from the engine you just hurt it in the end you should get
  • 02:05: two are such figoviny took here this aluminum corner 40 to 40 they combine it as accurately as possible with guide housing so combined squeeze the whole thing with manual clamps well, and then drill holes
  • 02:36: now we insert bolts and we twist so we got the X axis
  • 03:22: do not forget check for perpendicularity now turn to the Y axis for this we drill holes in the body of the guides fastened everything wakes up to the body of one of the drives so we drill holes in it now make holes for the X axis
  • 04:01: for this we carefully level and clamped with a manual vice we necessarily check perpendicularity if something is wrong correct Well, we drill holes
  • 04:36: at hand were furniture ties with the help of them we will attach Y-axis to the body of the drive take the nuts and use them
  • 05:07: as spacers the height of the spacers is chosen such so that when moving the carriage does not touch
  • 05:38: drive housing before gluing the surface
  • 06:47: we process a file that improve adhesion apply glue on the carriage and glue the site of plexiglas now we will fix the bracket
  • 07:21: for laser mounting set the transition plate on the carriage and screw it well and screw the X-axis to the drive housing
  • 08:26: Here is what a laser diode looks like as we can see from his zaluzheny only two contracts the one that goes to the hull is a minus Well, the second is a plus we take the optical head
  • 08:56: and neatly cut the glue in order to remove this lens we apply glue on the laser diode
  • 09:38: after the glue was applied very gently install the lens solder wires to the laser diode
  • 10:22: shrinkage now solder the laser diode
  • 11:07: to the current stabilizer with TTL modulation we manufacture the bracket for laser diode
  • 11:44: as a result, we should get here
  • 12:18: such is the bracket now glue the laser on adhesive thermal grease after all it withers we check the scheme for working capacity we see that the laser burns normally
  • 12:56: focal length is normal means you can continue to collect the engraver finally we check everything Well and at last we install the laser level
  • 13:47: install a cooler it is necessary for blowing the laser and for that that would blow off the smoke from burning we drag the wires
  • 14:17: that would not hang out and do not interfere for stepper motors I will
  • 14:56: use these here are the drivers engines this is DRV 8825 as seen on the radiator pasted
  • 15:26: usual glue and not thermal paste therefore we clean this garbage wipe with alcohol radiator and microcircuit apply the adhesive thermal paste
  • 16:23: glue the radiator install engine drivers
  • 17:13: to the RAMPS expansion board which in its turn installed on Arduino Mega after installing the drivers not connecting the engines must be set on them the current for this we measure the voltage
  • 17:43: between minus supply and subscript resistor on the driver for these engines should be set voltage of approximately 130mV which corresponds to a current of 260mA connect the motors connectors I took from USB they are perfect for these places connect Arduino to the computer
  • 18:24: and run the Arduino ID program fill in the GRBL sketch for your Arduino in my case it's Arduino Mega with RAMPS 1.4 expansion card after we need to create image that we will engrave The Inkscape program will help us in this in settings translate everything in mm and set the size the maximum working area
  • 18:54: 38 by 38 mm then draw a circle for example and then translate it into G-code using expansion lasergraver which is installed separately In it, we can also set the duration Burning at me costs 40
  • 19:24: write the name of the file and click apply then run the GRBL Controller program and establish a connection with Arduino connection established everything is fine
  • 19:55: Then open the file that we created in Inkscape choose our file and before you start to cut it you must press the zero position button making sure at the same time that the X and Y axes are located also in the zero position after that we press to begin see what a clear smooth cut
  • 21:44: with you was Lyokha Tekhnar up to new meetings