I'm building a simple device where my Raspberry Pi talks to Google Calendar, and displays information about where I'm at on my office door. My code is all in Python
It was simple until I started trying to choose a display: Serial, Parallel, I2C, SPI, and then even when you find one you think might work, you find loads of forums about troubles with the raspberry pi pull-ups, etc. It's all quite overwhelming!
Displays seem to have up to 20(ish) pins, although most tutorials I see use a maximum of 7 wires. How do you go about selecting a display that will work well with the Raspberry Pi? What are red flags?
Right now the easiest solution seems to be sending serial commands to an Arduino, which can then talk to the display... but this seems silly.