Assembly
Button Switch Teardown
Twist the switch clock-wise and pull it out to remove it from the arcade button assembly.
Pull out the LED from the top of the switch assembly.
Connect Wires to Button Switch
Plug in the spade connectors to the two terminals (labeled NO and COM) on the switch.
Button Cover Teardown
Unscrew the plastic nut from the thread of the arcade button assembly.
Pull out the mounting plate from the body of the arcade button.
Using a prying tool, remove the clear dome from the top of the arcade button.
Install NeoPixel Cable
Insert the 3-pin JST-SH cable through one of the holes on the bottom side of the arcade button.
Guide the cable through one of the holes on the top side of the arcade button.
Pull the cable so it has a bit of slack and then set aside.
NeoPixel Brain Cover
Get the 3D printed brain cover, NeoPixel Breakout and two M2 x 6mm long machine screws.
Install NeoPixel Breakout to Brain
Fit the NeoPixel Breakout over the square cutout on the bottom of the brain cover with the two mounting holes lined up.
Insert and fasten the two M2 x 6mm long machine screws to secure the NeoPixel to the brain cover.
Ensure not to over tighten the machine screws.
Connect NeoPixel Cable
Plug in the 3-pin JST-SH cable to the IN labeled connector on the NeoPixel Breakout.
Install Brain to Button Cover
Place the 3D printed brain cover into the top of the arcade button.
Adjust the 3-pin JST-SH cable as needed so the clear dome can be fitted back onto the button.
Firmly press the clear dome onto the top of the arcade button to reinstall.
Install Bolts to Hair
Use two M3 x 6mm long machine screws to secure the two 3D printed faux bolts to the hair piece.
Insert M3 screw through the mounting hole on the side of the hair piece.
Place the faux bolt over the thread of the M3 screw and fasten to secure in place.
Repeat for the other side of the hair piece.
Install Button
Insert the wires from the NeoPixel Breakout through the top of the hair piece.
Fit the arcade button into the circular cutout on the top of the hair piece with the matching notches lined up properly.
Secure Button to Hair
Insert the wires from the NeoPixel breakout through one of the holes on the 3D printed button mount.
Fit threaded stem of the arcade button through the center hole of the 3D printed button mount.
Insert and fasten the plastic nut onto the threading to secure the arcade button to the 3D printed hair piece.
Reinstall Switch to Button
Fit the switch back onto the stem of the arcade button with the two nubs fitting into the grooves.
Twist counter clock-wise to reinstall the switch to the arcade button.
Press down on the clear dome to test the arcade button has been properly assembled.
Hardware for Continuous Servo
Get the continuous servo, 3D printed mount, servo horn and included hardware screws ready.
Secure Servo to Mount
Fit the continuous servo onto the 3D printed mount with the mounting tabs lined up.
Ensure the servo is placed in the correct orientation.
Insert and fasten the two screws to secure the servo to the 3D printed mount.
Secure Servo Horn to Archimedes Screw
Get the 3D printed archimedes ready to install.
Place the servo horn into the matching recess on the bottom of the 3D printed archimedes screw.
Fasten the screw to secure the servo horn to the archimedes screw.
Install Ball Bearing
Get the various feeder parts ready to assemble together.
Fit the ball bearing into the recess on the 3D printed feeder.
Insert the ball bearing bore through the center of the ball bearing.
Insert an M3 x 12mm long screw through the center of the ball bearing bore.
Secure Archimedes Screw
Fit the archimedes screw onto the thread of the M3 screw.
While holding the archimedes screw in place, fasten the M3 screw to secure it to the ball bearing.
Secure Servo Mount to Feeder
Align the servo mount with two matching mounting holes on the feeder.
Fit the shaft of the servo onto the servo horn.
Insert and fasten two M3 x 6mm long machine screws to secure the servo mount to the feeder.
Install Scar to Head
Use a piece of double-sided tape or glue to attach the scar detail to the head.
Installing Black LED Acrylic (Optional)
Get the black LED acrylic, hardware fasteners and LED glasses panel ready.
- 2x M3 x 10mm long machine screws
- 4x M3 washers
Insert an M3 screw through the mounting hole on the piece of black LED acrylic.
Place two M3 sized washers onto the thread of the screw. Repeat for the second M3 screw.
Fit the LED glasses panel PCB over the thread of the screw.
The M3 washer should be in between the pice of black LED acrylic and the LED glasses PCB.
Secure LED glasses to Head
While holding the black LED acrylic and LED glasses PCB together, place it over the head with the two mounting holes lined up with the M3 fasteners.
Fasten the two screws to secure the black LED acrylic and LED glasses PCB to the 3D printed head.
Connect STEMMA QT
Plug the 300mm long STEMMA QT cable to the STEMMA QT connector on the right side of the LED glasses PCB.
Insert the other end of the STEMMA QT cable through the hole on the side of the head, near the temple.
Pull the cable through the bottom of the head.
Install Hair to Head
Begin fitting the 3D printed hair piece over the top of the head, with the various wires going through.
Pull all of the wires through the bottom of the head.
Secure Feather
Get the Feather RP2040 Prop-Maker and two M2.5 x 6mm long machine screws ready.
Place the Feather over the built-in standoffs on the bottom cover.
Insert and fasten the screws to secure the Feather to the bottom cover.
Connect Speaker to Feather
Get the speaker ready to connect to the Feather, taking note of the positive(+) and negative(–) labeled wires.
Insert the positive and negative wires to their corresponding terminals on the Feathers screw-blocks.
Fasten to tighten the screw block terminals to secure the speakers wires to the Feather.
Connect NeoPixel & Button
Get the three wires from the NeoPixel Breakout and two wires from the arcade button switch ready to secure to the Feather.
Insert the wires to their corresponding terminals on the Feathers screw block.
Fasten to tighten the screw block terminals to secure the wires to the Feather.
Connect Continuous Servo
Orient the 3-pin cable from the continuous servo with the header pins on the Feather. Brown wire to ground, Red wire to voltage, yellow wire to signal.
Connect LED Glasses
Plug in the STEMMA QT cable from the LED glasses to the matching connector on the Feather.
Install Feed to Bottom
Begin to place the feeder assemble over the tall standoffs on the bottom cover in the correct orientation.
Adjust the various wires and cables so they're positioned on the right side of the feeder.
Insert and fasten four M3 x 6mm long machine screws to secure the feeder to the bottom cover.
Secure Speaker Mount to Feeder
Get the speaker mount and two M3 x 8mm long machine screws ready.
Fit the speaker into the 3D printed speaker mount with the wires fitting through the cutout in the mount.
Place the speaker mount over the matching set of mounting holes on the left side of the feeder.]
Insert and fasten the machine screws to secure the speaker mount to the feeder.
Secure Neck to Bottom Cover
Get the neck and four M3 x 6mm long machine screws ready to secure the neck to the bottom.
Place the neck over the bottom cover with the mounting holes lined up and matching rounded corners.
Insert and fasten the four M3 screws to secure the bottom cover to the neck.
Secure Neck Bottom to Head
Orient the neck bottom with the USB C port from the Feather lined up with the matching cutout on the back of the head.
Begin joining the neck to the head, making sure all of the wires and cables are fitted inside the head.
Firmly press the neck bottom into the head to snap fit them together.
Install Hopper
Slide the hair piece up off the head and let it rest on the top edge.
Orient the hopper cover with the feeder and press it down to install.
Place the hopper over the cover with the lip fitting inside the opening.
Page last edited September 15, 2026
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