Teensy Arduino Shield Adapter Hookup Guide
Because this board is simply an adapter, there is no special programming required to start working with the adapter. You will, however, need to program the Teensy for any Arduino shield with which you'd like to work.
When programming your Teensy, remember to select the proper board from the Arduino IDE drop down, and select the proper serial port and baud rate.
Please review our tutorial on Getting Started with the Teensy, for more information on programming the Teensy in either the Arduino IDE or in a C compiler.
Don't forget to verify and update your pin definitions in your shield code if you intend on using
A7 in place of