Raspberry Pi

Raspberry Pi

• 2.
  What is aRaspberry Pi?  A Raspberry Pi is a credit card sized computer originally designed for education  The goal was to create an inexpensive computer, so schools could begin incorporating more computer development.  Thanks to its small size and inexpensive cost it was quickly adopted by tinkers, makers, and electronic enthusiasts for projects.  The Raspberry Pi is slower than a modern computer, but is still a complete Linux computer
• 3.
  Why Raspberry Pi’s? Inexpensive  Administrator Privileges  Physical Computing  Your Interests in Mind  Portable
• 4.
  What can youbuild? Game System Assistant Weather Station Security System Robots
• 5.
  The Breadboard  Abreadboard is a way of connecting electronic components together without having to solder them.  LED’s  Buttons  Wires, etc.  The holes in a breadboard are connected in either a vertical or horizontal pattern.
• 6.
  The Breadboard  Withthe breadboard oriented as above, the top row of holes are all connected together marked with blue dots and a second row marked in blue. These are primarily used for power and grounding.  In the middle, the columns are connected together with a break in the middle, thus all the green are connected together and then separately the pink and yellow columns are each connected together.
• 7.
  LED’s  When youpick up an LED(Light Emitting Diode) , you will notice that one leg is longer than the other.  The longer leg, known as the anode, is always connected to the positive supply of the power source.  The shorter leg, known as the cathode, is always connected to the negative side of the power source, otherwise known as ground.  LED’s will only work if wired the correct way around(ie. If the polarity is correct).
• 8.
  Resistors  Resistors area way of limiting the amount of electricity going through a circuit.  They limit the amount of current and voltage.  Current – The rate at which the charge flows.  Voltage – The difference in charge at 2 points.
• 9.
  Wiring  Jumper wiresare used to connect components from the Raspberry Pi to the breadboard and from one point on the breadboard to another.  There are 3 types of jumper wires: Female to female Male to male Male to female
• 10.
  GPIO Pins  GPIOstaninst for Gerneal Purpose Input Output  It is the way the Raspberry Pi can control and monitor the outside wirld through electrical circuits.  Generally speaking there are 4 types of pins:  Power/Voltage  Ground  I/O Controllable  Specialty
• 11.
  Checkpoint  1. Whyare we using Raspberry Pi’s?  2. How can we utilize the rows and columns of a breadboard?  3. What is a resistor used for?  4. How are the GPIO pins utilized?