Here are a few notes on my progress so far.

 

 

Software Notes:

 

- installed raspbian after booting NOOBS

- set up WiFI and keyboard/localization

- updated to latest packages

- ran raspi-config

    - turned on ssh

    - disabled GUI on boot

    - enabled camera

    - changed default pi password

- rebooted

took a picture with command:

 

# raspistill -o cam.jpg

 

(the underside of my desk)

 

Hardware Notes:

 

I am not an electrical engineer.  I have a basic knowledge but my skills have gone downhill lately and I’m not as sharp as I used to be, and I basically cobble stuff together that I read online.  Please double-check my work and if you have comments, please let me know so I can update and correct it.

 

I am not going to use the Piface HAT.  In fact, I may need to multiplex some LEDs since I will be short some GPIO pins.  I was thinking MCP23017 I2C I/O extender, but I haven’t done anything with I2C before, much less that chip, and at this point, I need to remind myself to keep it simple, and stop adding features and think about removing some!  There is a time limit.

 

Driving the LEDs

 

I’m basing my work off of this:

 

https://dordnung.de/raspberrypi-ledstrip/

 

Important note:  In this example, he is using a separate power supply for his Raspberry Pi.  I will be using one power supply for both LEDs and Raspberry Pi.  Therefore, I will be using a transformer:

 

https://www.amazon.com/gp/product/B00CXKBJI2/ref=ox_sc_act_title_1?smid=A2OCOGC9B25845&psc=1