Arduino Intro

Here are a few links:

Charles, KD8JZR found these excellent links and are provided to assist DARA Thursday Night Group Arduino class particitpants: 

http://web.archive.org/web/20170315235651/http://www.me.umn.edu/courses/me2011/arduino/arduinoGuide.pdf  

http://www.engineersgarage.com/microcontroller/arduino-projects

http://duino4projects.com

http://playground.arduino.cc/Projects/Ideas

http://www.electroschematics.com/arduino/

http://www.aem.umn.edu/msgc/MN_Space_Grant_Quadcopter_Competition_2014_2015/QuadcopterArduinoPresentation.pptx

Ham Radio Related Arduino Book

Here is an interesting book:

Arduino for Ham Radio: A Radio Amateur's Guide to Open Source Electronics and Microcontroller Projects 

Links to Small Arduino Projects

Arduino LED Sensor Night Light

http://codemahal.com/video/making-an-led-sensor-night-light-with-arduino/

Arduino BiCMOS Curve Tracer

http://www.idea2ic.com/BiCmosCurveTracer/Arduino%2520BiCmos%2520Curve%2520Tracer.html

Arduino Classroom: