Getting into the fun stuff! Controlling motors in Arduino Projects 9 at www.simplesmartdesign.com/arduino-projects-9.
Arduino Projects 11 | Photocells, 3 Easy Ways to use Light. See the circuit, the code, and 'how to' examples walking step by step through the process of using photocells to control lights, motors, and more.
Measuring force and weight is easy with this circuit. Learn how you can use this in Arduino Project 8.
Arduino Projects 6 | Circuit Control. Learn how to use a voltage divider to take measurements and turn them into digital data.
PiBot-B – Raspberry Pi Robot
Use Arduino With TIP120 Transistor to Control Motors and High Power Devices
How to use a Tip with arduino to control high power devices
Arduino Projects 3 | LED Light PWM Control Project 3 covers basic PWM control.
Arduino IR remote code library
Simple DIY 3x4 LED Display for Arduino MEGA / Uno / Nano