xterra-overland-dashboard/hardware/pico-pinout.md

Pico Pinout (Planned)

Display

3.5 inch SPI capacitive touchscreen

Resolution:

• 320x480

Display Driver:

• ST7796S

Touch Controller:

• FT6336U

Display Communication:

• SPI

Touch Communication:

• I2C

Voltage:

• 3.3V / 5V compatible

Communications

Primary:

• UART over CAT5

Backup/Future:

• RS-485 over CAT5 if UART proves unreliable
• WiFi HTTP backup

Inputs

• Capacitive touchscreen

Outputs

• Active 5V buzzer for audible alarms
• Display backlight control if supported

Future

• Physical wake button
• Status LED

Final pin assignments pending display wiring test.