What's The Difference Between DC, Servo & Stepper Motors?
ModMyPi
https://www.modmypi.com/blog/whats-the-difference-between-dc-servo-stepper-motors
Stepper vs Servo
Advances Micro Controls Inc.
https://www.amci.com/industrial-automation-resources/plc-automation-tutorials/stepper-vs-servo/
Stepper Motors vs. Servo Motors - Selecting a Motor
Matthew Burris
https://www.lifewire.com/stepper-motor-vs-servo-motors-selecting-a-motor-818841
Basic DC Motor Circuits
Gerald Recktenwald, Portland State University
https://cdn.sparkfun.com/assets/resources/4/4/DC_motor_circuits_slides.pdf
Arduino Reference: Stepper
https://www.arduino.cc/en/reference/stepper
AccelStepper Library for Arduino
Mike McCauley
http://www.airspayce.com/mikem/arduino/AccelStepper/
28BYJ-48 Stepper Motor with ULN2003 driver and Arduino Uno
42bots
http://42bots.com/tutorials/28byj-48-stepper-motor-with-uln2003-driver-and-arduino-uno/
How To Control a Stepper Motor with A4988 Driver and Arduino
Dejan Nedelkovski
http://howtomechatronics.com/tutorials/arduino/how-to-control-stepper-motor-with-a4988-driver-and-arduino/
Arduino Reference: Servo
https://www.arduino.cc/en/reference/servo
Instructables: How to Use Any Relay With Your Arduino the Safe Way
http://www.instructables.com/id/How-to-use-any-relay-with-your-arduino-the-safe-wa/
Arduino Basics: Relay Module
http://arduinobasics.blogspot.de/2014/09/relay-module.html
Lab Demos
Lesson 13: DC Motors
Adafruit
https://learn.adafruit.com/adafruit-arduino-lesson-13-dc-motors/overview
Lesson 14: Servo Motors
Adafruit
https://learn.adafruit.com/adafruit-arduino-lesson-14-servo-motors/overview
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