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• Restoring lost connections

  3drobert • 07/28/2024 at 03:19 • 0 comments

  Now If I am printing from file and I lost connection then I can restore printing from last position and resume fine.

• more enhancements

  3drobert • 07/27/2024 at 04:11 • 0 comments

  - Added LM358 and problem resolved.

  - Ploting XYZ positions.

  - Axis velocity estimations.

  - Allowing to change spark ON time .

  - Start connection to printer through NodeJS serialport and showing printer messages.

  - Changed 100uF capacitor by 660uF.

  [フレーム]

• Using Blender .obj file to route EDM job

  3drobert • 07/26/2024 at 04:08 • 0 comments

  Now I can import .obj files from Blender besides .ngc files from InkScape.

  [フレーム]

• Updated design

  3drobert • 07/25/2024 at 02:49 • 0 comments

  Updating design replacing UA741 with LM358 and adding 7805 to relay module.

• Dual supply OPAMP voltage follower without negative source

  3drobert • 07/24/2024 at 21:01 • 0 comments

  I have problems to get real values at lowest voltages on ADC pin because I am using an OPAMP for symetric source (UA741) and I'm using ground for the negative DC PIN.

  I can resolve this by two methods:

  1.- Waiting for LM358 I buy recently which handle single supplies.

  2.- Adding voltage biasing and correct received values though software but I loss usable resolution.

  Falstad simulation
  

  Geogebra graphic function
  

• New EDM features

  3drobert • 07/23/2024 at 20:45 • 0 comments

  New features added:

  - Three grid helper added in threeJS view.

  - Changed axis colors in threeJS view to fit according to printer.

  - Show electrode option in threeJS view and change diameter on it.

  - Moving electrode forward based in estimations and do stop and back based in realtime.

  - Allowing Invert print direction (print file mode)

  - Allowing down electrode without change XYZ (to feed worn out electrode in print file mode)

  - Reset XYZ button.

  - Showing voltage values. (Added OPAMP in schematic for ADC pin)

  - Relay to avoid positive electrode has dangerous voltage when IGBT is in off mode.

  - Led connected to relay to dischage capacitor when IGBT is in off mode and to advise the electrode has voltage.

  Next::

  - Allow import file from a Blender scene with a line path.

• Testing algorithm to execute EDM from GCODE file

  3drobert • 07/22/2024 at 12:19 • 0 comments

  Doing EDM machining from a GCODE file. Testing algorithm to execute EDM with XYZ displacement.

  [フレーム]

• Voltage multiplier using 555+mosfets for EDM

  3drobert • 07/20/2024 at 18:56 • 0 comments

  Now I use 555 with Mosfets to avoid the current 555 limitation.
  Also I printed a support for one ER32 chuck and I have ready implemented an algorithm to move electrode according to .ngc files generated with inkscape GCODE tools and I can see the imported file in a ThreeJS canvas.

  [フレーム]

  Falstad simulation
  

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