Interactive numerical controlled egg-decorating machine

por ahd71

Archivos imprimibles (11)

  • stl

    Knob.stl

    87 Ko · 830 descargas

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  • stl

    Rubberband_pole.stl

    82 Ko · 797 descargas

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  • stl

    Cone_-_right.stl

    86 Ko · 796 descargas

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  • stl

    Cone_-_left.stl

    73 Ko · 796 descargas

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  • stl

    Part_A.stl

    149 Ko · 803 descargas

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  • stl

    Part_C.stl

    150 Ko · 800 descargas

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  • stl

    Washer.stl

    80 Ko · 809 descargas

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  • stl

    Part_B.stl

    95 Ko · 797 descargas

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  • stl

    Arm_-_Lower.stl

    152 Ko · 801 descargas

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  • stl

    Pen_-_Insert.stl

    58 Ko · 800 descargas

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  • stl

    Arm_-_Upper.stl

    185 Ko · 795 descargas

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Descripción

  • Inspired of the orignal egg-bot I designed a interactive variant for egg-decoration.
  • Designed to be easily assembled and printed (no support required if oriented properly while printing)
  • Controlled via serial interface (i use putty to connect, any terminal will do)
  • Video: https://www.youtube.com/watch?v=KuiRFXf5oMg

Modes of operation

  • Direct control (move left/right, rotation forward/reverse) and pen up/down keys like an etch-and-sketch
  • 360 degrees patterns via simple numerical commands. ("Pattern button" followed by one to three digits do select pattern, frequency and width)

Pen mount (alternatives)

Bill of material

  • 3d printed parts (PLA)
  • 1 arduino (or standalone atmega328p) with serial connection to host computer
  • 2 driver boards (ULN2003 based)
  • 2 stepper motors (28BYJ48 DC 5V) (~3$ each from China incl. driver board)
  • 1 servo (mini 9g ~3$)
  • a few M4 and M5 screws, washers and nuts
  • a couple of screws to mount the pieces to the base plate
  • 1 spring
  • 1 rubberband
  • "Oogoo" (silicon and corn starch) to the paddings
  • baseplate in any scrap wood material (my was laminated)
  • pencils
  • (optional USB keyboard with stickers)
  • style cheat sheet

Challanges

  • Backlash in the geared steppers was mitigated with software backlash compensation for the rotating axis and with a rubberband for the moving arm. [resolved]
  • Finding the perfect tention so that the egg doesn't slip (making it moving less than expected 360 degrees) [still experimenting]

Firmware

https://github.com/ahd71/incedm