Arduino is an open-source hardware and software company, project and user community that designs and manufactures single-board microcontrollers and microcontroller kits for building digital devices.
Circuit #1 - Blink and LED
Circuit #1 blinked a light on and off.
Potentiometer gives an output to the arduino which in turn changes the brightness of the led.
Circuit # 3 R.G.B led
The LED changes color
Circuit # 4 Multiple LEDs
Circuit # 5 Push Buttons
Circuit 5 connects lights to power when buttons are pressed.
Circuit # 6 Photo Resister
This circuit takes input from the photoresistor and tells the led whether to decrease of increase.
Circuit # 7 Temperature
The RTD senses the temperature and tells the computer.
Circuit # 8 Servo
The servo spins to a position then back and forth.
Circuit # 9
This circuit is pretty simple it just plays a sound.
Circuit # 10 Motor
This just makes a motor spin.
Circuit # 11 Relays
This circuit changes the direction that the electricity is going. Then i messed with the code to change how fast the relay switches.
Circuit # 12
This circuit uses logic gates to determine the output.