Electronics
The circuitry is divided into two main sections - The ears and the visor. In this project we're using two micro-controllers and two lithium polymer batteries. This gives a longer "play-time" but makes the total cost a bit higher. Follow the two circuit diagrams below and reference the connections for wiring the circuit.
Trinket 5V and 24x NeoPixel rings
GND and BAT pins from the Trinket connects to GND and PWR pins and the NeoPixel rings. Pin #0 from the Trinket connects to Data Input on the 24x NeoPixel Rings. The two 24x NeoPixel rings shared Data, Power and Ground connections via a Y-cable.
The pads on the back of the Trinket connect to a female connector of a JST extension cable. The the red wire from the JST extension cable connects to the +Postive pad and black wire connects to the -Negative pad on the Trinket.
A slide switch is spliced in between a second JST extension cable.
The female connector on the second JST extension cable connects a the male part of the JST extension cable that's wired to the back of the Trinket.
The male connector from lipo battery connects to the female connector on the JST extension cable.
The male connector from lipo battery connects to the female connector on the JST extension cable.
One long NeoPixel strip is cut in half to make two strands of NeoPixel strips that will go across the visor.
The two NeoPixel strips are connected power to power, ground to ground, and data out to data in - follow the arrow icon on the strip to indicate the correct direction of the strip.
The first NeoPixel's data input will connect to Pin #6 on the Adafruit Feather 32u4 Bluefruit LE. 5V power from the NeoPixel strip will connect to the BAT pin on the Adafruit Feather 32u4 Bluefruit LE.
The ground pin from the NeoPixel strip will connect to the ground pin on the Adafruit Feather 32u4 Bluefruit LE.
A slide switch will splice in between the positive red wire of a JST extension cable. The female connector plugs into the male connector of the lipo battery while the male connector plugs into the JST connector of the Adafruit Feather 32u4 Bluefruit LE.
Lithium Battery Charger
Adafruit Feather 32u4 Bluefruit LE has a built-in USB battery charging circuit. Plug in a microUSB cable into the microUSB port on the Adafruit Feather 32u4 Bluefruit LE to recharge the lipo battery using a USB adapter from a wall outlet or your computer.
