Mini

BoomBeastic Mini build guide

Parts list

here you can find the list

Assembly

Step 1. Start with the backplate, wooden layer 0 :)

You’ll see the 0 etched into the top left of the wood layer. You’re going to add six nylon hex nuts screws (white plastic maybe link to pic) to the underside of the wood layer, and attach the nuts to the topside, screwing them down all the way.

Note: the only holes that won’t have screws bolts are the four most outer corners.

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Note: if for whatever reason you took the SD card out of the Pi, now’s a good time to put it in, before you screw all the tiny nylon bolts on.

Step 2. Place the Pi onto the backplate, over the four screws near the cutout. Screw on four 10mm spacers to hold it in place.

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Step 3. Solder ALL THE THINGS

3a. Solder the screw terminal block and pins to 12S amp breakout. The screw terminal block and pins come with the amp breakout.

Start with the screw terminal block -- they look like a tiny box with two pins. Orient the terminals so they are on the same side of the wood layer as the other components, at the edge of the wood layer (so you can access them later). Solder the pins.

Next add the set of pins. The Adafruit set of pins we received came with an extra pin, we snapped one off the end before soldering. Check the orientation of the pins before soldering - pins should be sticking up on the same side as the the screw terminals, with the short side of the pins down into the connectors.

3b. Solder the pins on the LED Backpack. The pins should be oriented so that they are sticking up toward you when you are looking at the chip on the LED Backpack. (You might also have to snap off extra pins here.)

3c. Connect the LED matrix to the LED Backpack. BE SURE TO DO THIS THE CORRECT WAY: https://learn.adafruit.com/adafruit-led-backpack/1-2-8x8-matrix

3d. Solder the speaker wires to the speaker.

Step 4. Sit the 12S amp breakout over the two nylon hex nuts in the upper right corner of wood layer 0. Screw on two 10mm spacers to hold the amp breakout in place.

Step 5. Stack wooden layers 1-5.

Step 6. To the faceplate (with the resin logo) install four white nylon screws. Screw heads should be on the side with the printing. Screw down a nut for every screw.

Note: if the screw heads or nuts block being able to install the LED matrix, take the time to turn the nuts so they’re flush with the cutout, which should allow the LED matrix space.

Step 7. Sit the LED Backpack over the four white nylon hex nuts, with the pins you soldered on the bottom (relative to the faceplate).

Step 8. Align the speaker over the circular cutout in the faceplate, with the leads facing the closer edge of the back of the faceplate. Insert four nylon screws through the front of the faceplate and speaker frame. Use four black nylon nuts to tighten down.

Step 9. Wire the speaker. Remove the red and brown wires from the jumper jerky to use as speaker wire. You’ll need to remove the jumpers from each end and strip the wires. If you have speaker wire, you can use that instead. Solder dark wire to the – thingie on the speaker Solder red wire to the + thingie on the speaker

Step 10. Thread the speaker wires through wooden layers 1-5.

Step 11. Wire speaker to the 12S amp breakout on the backplate. Insert the dark wire into the – thingie on the terminal block, tighten the screw. Insert the red wire into the + thingie on the terminal block, tighten the screw.

Step 12. Wire the LED matrix to the Pi From the jumper jerky peel four wires. You can use the wiring diagram to wire the matrix, or this table:

Wiring diagram color	LED Matrix pin	Raspberry Pi pin
red	VCC	2
black	GND	6
orange	SDA	3
violet	SCL	5

Step 13. Wire the amp to the Pi

Wiring diagram color	Amp pin	Raspberry Pi pin
red	Vin	4
black	GND	14
blue	DIN	40
yellow	BCLK	12
cyan	LRC	35

Note: the GAIN and SD pins on the amp are not connected.

Step 14. Now’s a good time to test the wiring, before closing it all up. Boot it up! Do you see a smiley face on the LED matrix? Does it connect to the network? Does it play music without ? If not, now’s a good time to find a wiring issue and fix it.

Step 15. Bolt the layers of wood together. This may take some work to move the wires so the case can close. You can bend the pins (eg. to move the amp jumpers out of the way of the speaker).