LAMEBOY - another ESP12 handheld

This needs a generally tested, breadboarded prototype, or at least it should. I've added 2.2mm drill holes where I could for later case designs to screw on, but I'm not sure about them. A beast to layout and probably more to solder! Seems to make sense to get a stencil for the first time.

• The attiny has some transistors for the RGB backlight now
• I've added a grove connector for other I2C modules
• moved some parts around
• removed the tCream pads off of my AVR pads 

Although I had my run on some designs using this chip, I had to check the datasheet again and noticed something weird. Everyones project I've seen just uses a button that pulls the pin to ground. But what can we observe here on P5? A pull-up resistor of 100kOhms pulls up the input, until  you push a switch that connects it to even more pull-ups? I should sleep and tomorrow remove my pull-up stuff from the board. 

https://www.mikrocontroller.net/articles/Port-Expander_PCF8574

#D1 Mini X-Pad Shield 

#HariFun#133 More I/O Madness 

#Portable Raspberry PI Zero 

https://learn.adafruit.com/trinket-audio-player/sound-playback

http://www.technoblogy.com/show?QBB

http://www.cbmitapages.it/c64/6581.pdf

https://github.com/cybernesto/sid-arduino-lib