Teensy

A list of the 4 libraries in the architecture teensy.

Mcp3208 Arduino library for the MCP3208/3204 12 bit ADC.
MFRC522 Arduino RFID Library for MFRC522 (SPI)
PJON PJON is an open-source, multi-master, multi-media bus network protocol
Watchdog Use Watchdog to execute a function and/or reset the microcontroller.