Tibbits with "Special Needs"
Most Tibbits happily work with simple control (GPIO) lines of the CPU. Some, however, require dedicated I/O functionality from the CPU lines:
[SER] Tibbits that require TX and RX UART lines
[INT] Tibbits that require an interrupt line
[POE] Tibbits that require PoE power lines
[CAN] Tibbits that require CAN functionality
[AUD] Tibbits that require audio functionalily