Gaggia Classic Pro Elegant Hack Stage 1 - OLED (DONE!)
Arduino OLED Connection The OLED 1.5 inch display is a great gorgeous large display that can convey a lot of information. Please see diagram below on how to wire to the Arduino. There is no connection directly from the OLED to Gaggia Classic Pro. We are using the Arduino's SPI interface lines to the OLED. Notes I am using the build-in Arduino SPI hardware lines. This is more efficient anytime you can let the hardware to do the communication. Arduino's SPI MISO line (pin 12) is not connected here since the OLED display do not need to send info to the Arduino. We will be using this pin in future upgrades to connect to the high precision temperature SPI sensor. I used the OLED build-in connector cable to directly plug into the Arduino's pin out connectors. (No soldering here). I did solder the +5V onto the same line power supply's +5V to attempt to save a pin for future expansion. (infusion control pump and relay to controller the b...