MAX7219 Buy
$ cd max7219
$ sudo apt-get install python-dev python-pip
$ sudo pip install spidev
$ sudo python setup.py install
None, analog sensor
Connect to pin 13 / channel 1 on 3.3v rail.
$ sudo apt-get install scons
$ cd rpi_ws281x
$ sudo scons
$ cd python
$ sudo python setup.py install
SSD1306 Buy Specs
$ sudo apt-get install python-imaging python-smbus
$ sudo apt-get install cu minicom
Use wiring from https://learn.adafruit.com/reading-a-analog-in-and-controlling-audio-volume-with-the-raspberry-pi/script and http://ww1.microchip.com/downloads/en/DeviceDoc/21295C.pdf
None, analog sensor