Assembly

Components Review

Take a moment to gather the wired components. Check your work by connecting the various JST cables together and see if everything matches up. Now is a good time to take a moment and rework any of the connections.

Securing Feather

The Adafruit Feather will need to be secured to the bottom cover of the 3D printed case. 4x M2.5 metric machine screws are used to secure the PCB to the standoffs built into the bottom cover.

Secured Feather

Orient and place the Feather PCB on top of the four standoffs. The USB port should be facing the edge of the bottom cover. While holding in place, insert and fasten M2.5 x 5mm machine screws until fully tightened. The length of the screws matter here – 5mm is the length of the whole screw (Flat head style machine screws) any longer will not be able to fasten all the way.

Install Components to Box

The toggle switch and LED push button are panel mounted to the 3d printed box frame. The toggle switch uses a 6mm diameter hole. The push button uses a 16mm diameter hole. These include the specific hardware (washers/nuts) for panel mounting.

3d_printing_box-switch-install.jpg

3d_printing_box-switch-secured.jpg

3d_printing_box-switch-installed.jpg

Install Toggle Switch

Remove the washer and nut from the toggle switch. Then, insert the toggle switch through the inside of the box with the actuator going in first. Orient the position of the actuator to your liking. While holding in place, install the washers and fasten the nut by hand tightening or wrench for tighter hold. 

3d_printing_box-btn-install.jpg

3d_printing_box-btn-secured.jpg

3d_printing_box-btn-installed.jpg

Install Push Button

Remove the hex nut from the threading of the push button. Insert the push button into the box frame, from the outside with the JST wires going in first. While holding the button in place, thread the hex nut through the JST wires and twist to fasten onto the threading. Fasten all the way and use a wrench to fully tighten.

Install NeoTrellis PCB

Get familiar with the top and bottom of the box frame. The top side has an edge along the inside of the frame that will keep the 3d print tray in place – this prevents the tray from falling through the frame. Insert the neotrellis PCB through the bottom side. 

NeoTrellis Tray

The tray is designed to house the NeoTrellis without any hardware. The edges of the PCB snap fits to the tray. Insert the PCB through the try so the side with the NeoPixels are facing up with the lip of the tray.

Installing NeoTrellis Tray

The bottom of the tray features a cutaway for the wires to pass through. Align the neotrellis PCB so the wiring is fitted through the notch. Press the PCB down into the try to snap it into place. If it doesn't quite fit, use a filing tool to stand away the edges of the PCB (must do this in a ventilated area).

Install Tray to Box

With the neotrellis PCB fitted into the tray, press the try down into the box frame. The tray will rest of the ledge inside the box frame. The tolerances are fairly tight so you may need to firmly press down on the tray to get it to pass through the nubs on the side of the box frame.

Install Elastomer Pad

The silicone elastomer button pad features nubs that are press fitted through holes on the NeoTrellis PCB. Orient the elastomer pad so the nubs match up with the corresponding holes on the NeoTellis PCB. Lay it on top of the PCB and press down.

Install Top Cover

Orient the top cover with the box frame so the nubs along the inside match up with the indentations on the lip of the top cover. Lay the top over the elastomers and press down to lock the cover onto the box frame.

Install Battery

The bottom cover is designed to house a 1200mAh battery. Insert the battery into the built-in holder so the cable fits through the cutaway. Another cutaway, on the side, can be used to pop the battery out. Plug in the JST connector from the battery to the JST port on the Adafruit Feather – This will power on the circuit immediately.

Plug In JST Connections

Follow the wiring and sets of JST cables from the Adafruit Feather and match them up with the components. Ensure the connections for the LED are correct. Plug them together – The toggle switch can now turn the circuit off.

USB Port

The USB port from the Adafruit Feather should be oriented with the cutout on the side of the box frame. This allows access for programming and charging the battery.

Closing Box

Be considerate of the wiring before closing the box. All of the wires need to be fitted inside the box frame. Press the bottom cover onto the box frame.

Assembled Case

The top and bottom covers can still be opened by pulling them apart. A finger nail or thin tool should be able to get in-between the parts. Flip the toggle switch and test out the circuit.

This guide was first published on Oct 09, 2018. It was last updated on Oct 09, 2018. This page (Assembly) was last updated on Sep 17, 2019.