Now that everything works, I want to improve the display. I need more than 2 lines, and the 4-line LED actually takes up too much room. I therefore went to Micro Center and got a Adafruit OLED:
- Adafruit Industries Monochrome 0.96" 128x64 OLED Graphic Display
The wiring was almost straight forward:
- Pin 5V (Vcc) to Vin
- Pin GND (ground) to Gnd
- Pin 20 SDA (data) to Data
- Pin 21 SCL (clock) to Clk
I reconfigured the DCC-EX with its installer and it worked immediately:
Next, I want to customize what is displayed:
- Line 1: DCC-EX version
- Line 2: blank
- Line 3: status on Main
- Line 4: status on Prog
- Line 5: blank
- Line 6: IP:port