# 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.