1. Building Raspberry Pi Controllers with Python
Class 5: RaspiRobot Board Part 2
July 10, 2015 Don Wilcher

2. RaspiRobot Board Part 2 Day 5 Agenda: What is a LED Matrix?
The Adafruit LED Backpack
Attaching the LED Matrix to the RaspiRobot Board
Configuring I2C port for the Raspberry Pi
Controlling a LED Matrix with RaspiRobot Board

3. RaspiRobot Board Part 2 Learning Objectives:
Learn about the LED Matrix
Learn about the Adafruit LED Backpack
Learn how to attach the LED Matrix to the RaspiRobot Board
Learn how to configure the I2C port on the Raspberry Pi
Learn how to control the LED Maxtrix with the RaspiRobot Board

4. What is a LED Matrix?

5. RaspiRobot Question 1:
What is a LED Matrix?

6. What is a LED Backpack? Resource :

7. RaspiRobot Question 2:
What advantage does the LED Backpack provide for the LED Matrix?

8. RaspiRobot Board Architecture

9. Attaching the LED Matrix to the RaspiRobot Board?

10. RaspiRobot Question 3:
What connector on the RaspiRobot Board does the LED Matrix mate to?

11. Configuring I2C on the Raspberry Pi
I2C (Inter-Integrated Circuit) is a very commonly used standard designed to allow one chip to talk to another. So, since the Raspberry Pi can talk I2C we can connect it to a variety of I2C capable chips and modules
Configuring I2C tutorial resource:

12. Configuring I2C on the Raspberry Pi…

13. RaspiRobot Question 4
What does I2C stand for?

14. Controlling the LED Matrix with RaspiRobot Board
Scrolling Clock code

15. Controlling the LED Matrix with RaspiRobot Board
Scrolling Clock code…
Resource :

16. RaspiRobot Question 5:
What Python library is used to establish the timing for the LED Matrix Scrolling Clock?

17. Additional Resources
Simon Monk’s github site for RaspiRobot documentation
Adafruit: RaspiRobot board product
Adafruit: LED Backpack overview
Adafruit: Raspberry Pi LED Display tutorial

18. RaspiRobot Question 6:
What other topics would you like to see classes on?