We don't have anything planned for Treehouse specifically, but one of our teachers, Andrew Chalkley (achalkley) has blogged a few times about working with Ardui

We don't have anything planned for Treehouse specifically, but one of our teachers, Andrew Chalkley (achalkley) has blogged a few times about working with Arduino: http://forefront.io/a/beginners-guide-to-arduino http://forefront.io/a/beginners-guide-to-arduino and http://forefront.io/a/arduino_apple_remote_controlled_buzzer http://forefront.io/a/arduino_apple_remote_controlled_buzzer