magic_crystal

magic_crystal

CAD design for magic sparkle crystal

more images in the gallery

Software

have a look at magic_crystal_animation

Hardware

• 4x LEDBoard_4x4_HD
• 4x 1/3-part of Heatsink ICK PGA 14 x 14 x 12 (3d-model)
• 8x nut M3
• 8x screw M3x20
• lasercut wood
  have a look at the export/ folder for the files
  • 4mm plywood
    • 1x crystal_mounting_layer1
    • 1x crystal_mounting_layer2
    • 1x crystal_mounting_layer3
    • 1x lightguides_mounting
    • 1x bottom
  • 1mm plywood
    • 4x lightblocker_side
    • 1x crystal_mounting_layer4
• electronics
  • 1x Adafruit ItsyBitsy M4
    or other CircuitPython compatible board
    (Arduino firmware not done yet..)
  • 1x ambient-light-sensor (to be defined)
  • 2x momentary-push-button
  • DC-DC converter Pololu 5V, 5A Step-Down Voltage Regulator D24V50F5
  • batteries
    • for first tests 4x older version of Lithium Ion Cylindrical Battery - 3.7v 2200mAh
      the older version has a maximal discharge current of ~500mA
      so it is only possible to use the LEDBoards with low power setting..
      4 * 6W = 24W → 27W (input with loss of DC/DC converter)
      4 * 3.7V = 14,8V → 1,8 A
      (4 * 3.7V) * 0,5A = 5,92 W
    • later eventually switching to LiFePo4
      most likely to 18650 or 26650 2x 2s1p inline packs
      (similar to 4s1p A123 ANR26650M1B 2x2-Pack 13,2V 2,5Ah)

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