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Stack Modules

A stack module is the structural building block of the V3 enclosure. Each module is a printed frame with electronics or eyeballs mounted inside. The modules bolt together in sequence to form the finished tower.

Build the modules in this order: PSU first (the base of the stack), then the two Camera modules, then the LED module.

PSU Stack Module

PSU stack module, 3D view

PSU stack module, line drawing

Tools:

  • Cross-head screwdriver
  • 3 mm Allen key for ISO 7380-2 or 4 mm for ISO 4762
Part Qty Notes
Stack_Module_PSU_vent.stl 1
Ambient_LED_Screen.stl 1
LinePower_Cover.stl 1
Ambient_LED_Visor.stl 1
Spacer.stl 4
Meanwell LRS-75-5 1
AC Power Inlet C14 with Fuse 1
USB COB LED Strip Lights 6.56 ft 1 roughly 60 cm required; 8 mm width
Wires 3
M3x6 mm screw 2 5-6 mm
M3x5 mm self-tapping screw 4 5-6 mm
M3x10 mm self-tapping screw 4 5-16 mm
ISO 4762 M5x35 mm screw 4 optional, alternative to the M5 through rod design
ISO 10511 M5 lock nut 4 optional, alternative to the M5 through rod design; lock preferred, ISO 4032 will work as well
  1. Remove support material.
  2. Mount the Meanwell PSU in the Stack_Module_PSU_vent with two M3x6 mm screws from the bottom side (in the center of the PSU).
  3. Add two M3x5 mm self-tapping screws from the top side (in the corners of the PSU). 6 mm screws will also work, but will cause a slight bump in the bottom side surface.
  4. Install the three wires on the screw terminals of the PSU. Use the standard color code for PE, L, N (US: G, N, H).
  5. Install the AC Power Inlet in the Stack_Module_PSU_vent and plug in the wires on the right terminals. Fix the AC Power Inlet with two M3x10 mm self-tapping screws.
  6. Get familiar with the right orientation of the Ambient_LED_Screen in the Stack_Module_PSU_vent.
  7. Wrap the USB COB LED Strip on the Ambient_LED_Screen. Start in the lower left corner with roughly 2 cm after the USB cable. Stick the COB on the surface going horizontally rightwards. Wrap it around the corner. Go diagonally upwards so you meet the first wrap on the left side. Trim the strip roughly 2 cm after the last front face wrap. The result should be four horizontal strips in the front and three diagonal ones in the back.
  8. Install the wrapped Ambient_LED_Screen in the Stack_Module_PSU_vent. First thread the USB cable through the left gap between housing and PSU. Stick the screen in the slot and secure it with two M3x10 mm self-tapping screws.
  9. Double check correct wiring and install the LinePower_Cover with two M3x5 mm self-tapping screws.
  10. Slide or clip on the Ambient_LED_Visor.
  11. Place spacers in the four outermost holes on top.

Note

This stack module is specifically designed for the Meanwell LRS-75-5. A different PSU is not recommended.

Note

Four ISO 4762 M5x35 mm screws can be used in the Stack_Module_PSU if you do not want to opt for the through-rod variant. Insert four ISO 10511 M5 lock nuts in the base and install the four ISO 4762 M5x35 mm screws from the top.

Camera Stack Module

Tee camera stack module, 3D view

Flight camera stack module, 3D view

Flight camera stack module, line drawing

Tools:

  • 3 mm Allen key for ISO 7380-2 or 4 mm for ISO 4762
Part Qty Notes
Camera Screen Assembly 1
Stack_Module.stl 1
Spacer.stl 4
Filter holder 1 flight cam only. Pick one. IRFilter_Mount_1inchround.stl for a round 1" filter, or Pi Cam Filter Holder.stl (V2 carry-over) for a square 1" filter on the standard 6mm M12 lens. For other lens focal lengths or non-standard filter thicknesses, use the parameterized Pi Cam Filter Holder - M12 Lens.stl with the FreeCAD source.
ISO 7380-2 M5x10 mm screw 2 10-15 mm; ISO 4762 optional
IR-Pass Filter 1 1" round or 1" square, flight cam only
  1. Remove support material.
  2. Pre-tap the lower EyeScreen holes with a screw.
  3. Mount the Camera Screen Assembly to the Stack_Module. Recommended front-plane distance: 30 mm (same left and right).
  4. Place spacers in the four outermost holes on top.
  5. Only for the flight camera: place the IR-Pass Filter onto the lens and clip the matching filter holder on the lens (round or square, depending on filter shape). Process may vary.

Run distortion calibration before installing the filter

The distortion calibration step uses a printed ChArUco board illuminated by visible light. The IR-pass filter blocks visible light and will prevent the detector from finding the pattern.

Either defer installing this filter until after you have completed distortion calibration on Camera 2, or plan to temporarily remove it later when you calibrate.

LED Stack Module

LED stack module, 3D view

Tools:

  • 3 mm Allen key for ISO 7380-2 or 4 mm for ISO 4762
Part Qty Notes
LED Screen Assembly 1
Stack_Module.stl 1
Spacer.stl 4
ISO 7380-2 M5x10 mm screw 2 10-15 mm; ISO 4762 optional
  1. Remove support material.
  2. Pre-tap the lower EyeScreen holes with a screw.
  3. Mount the LED Screen Assembly to the Stack_Module. Recommended front-plane distance: 30 mm (same left and right).
  4. Place spacers in the four outermost holes on top.