Hopefully, if you’re jumping into this tutorial you have an innate sense for tearing things apart without much intention of putting them back together. But just in case, we’ve provided some notes here.
To open up the speaker, wedge a screwdriver into the face plate and pop it off. Then remove the four screws attaching the inner face to the back, remove the face, and unscrew the volume and power board. To get all the components free, we cut through the plastic to the wire hole with a mix of wire cutters and pliers, and wiggled the wire free.
The Blue Snowflake is incredibly satisfying to take apart. Start by unscrewing the front metal grating, then removing the four screws keeping the mic attached to the mount. The plastic backing to the mic will pop off, and you can remove the pop/windscreen. You should be left with two PCBs attached to each other via header pins.
Powering the screen from usb power
The LCD screen needs power, which you can either supply with a bench power supply, or via USB with the boost converter. The boost converter we used is tunable, so we started by cutting a USB cable in half, stripping all the wires, and checking which two wires have +5V. Then we soldered those two cables to the boost converter, and connected the multimeter to the output of the converter. Then we tuned the converter until the multimeter displayed +12V, which is a good voltage for the LCD screen. Finally, we wired the power cables from the LCD screen to the boost converter and now the LCD screen is USB powered! You can use the Pi or your computer to power the screen.
Making everything mobile
Up to this point we’ve been running off USB and wall power, but if we arrange our power connections correctly and incorporate the battery, we can make Noodle mobile. We found that there were some issues with our USB hub powering enough of the devices in some configurations. Our final configuration was to have the battery powering the Raspberry Pi and the LCD. The Raspberry Pi had used one USB port for the Wi-fi card, and the other port for the USB hub. All the other powered devices (speaker, mic, and temporarily a keyboard and mouse) were plugged into the USB hub.