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Introduction to Microcontrollers and the Board of Education

Introduction to Microcontrollers and the Board of Education. Board of Education (BOE) - Intro. This presentation will Present an overview of Microcontrollers and their typical applications Detail Parallax’s Board of Education  Single Board Computer

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Introduction to Microcontrollers and the Board of Education

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  1. Introduction to Microcontrollersand the Board of Education

  2. Board of Education (BOE) - Intro This presentation will • Present an overview of Microcontrollers and their typical applications • Detail Parallax’s Board of Education Single Board Computer • Detail Parallax’s BASIC Stamp Module and the PIC-16C57 Microcontroller • Present an overview of the BASIC Stamp Development System

  3. First…. What is a Computer? All computers, including microcontrollers, must contain… • Central Processing Unit (CPU) • Some form of memory (MEMORY) • Input & Output Devices (I/O)

  4. PC Computer • PC computers (i.e. a desktop or laptop) are designed to… • Perform a wide verity of tasks. • Run numerous programs. • A PC computer generally contain… • CPU : A very powerful processor such as Intel’s Pentium  or AMD’s Phenom • Memory : Several types of memory such as ROM, RAM, Cache, DVD, CD, and a Hard drive. • I/O : Keyboard/Mouse for inputs & Monitor/Printer for outputs.

  5. Microcontroller What makes a microcontroller different ? • Microcontrollers are designed to… • Perform one dedicated task. • Run one specific program. • A microcontroller generally contain… • CPU : Small, low cost, and low power processor. With their features limited to the requirements of the application. • Memory : ROM memory to hold the one program and a small amount of RAM. • I/O : Depends on the application • Burglar Alarm System : Inputs from window & door switches; Outputs to siren and 911 auto dialer. • Automotive Cruise Control : Inputs from controls and speedometer; Outputs to accelerator and brakes.

  6. Microcontroller Applications • Microcontrollers are frequently called "embedded controllers" or "embedded systems" because they’re embedded inside other device • Typical applications • Burglar Alarm System • Automotive Cruse Control • Cell Phones • MP3 Players • Home HVAC Systems • Can you think of other applications?

  7. Introduction to the Board Of Education • In this class you will be using a single board computer called the Board Of Education (BOE). • The BOE is manufactured by Parallax Inc. www.parallax.com) • With a little background in the BASIC programming language, the BOE will allow you to implement embedded controllers/systems quickly and easily. Board Of Education

  8. Overview of the BOE • USB Interface to PC • Battery & Wall-Wart Connectors and Voltage Regulator • Servo Motor Interface Connectors • Proto-Board Area • Reset Switch • Power Switch • Connection Headers to BASIC Stamp • BASIC Stamp

  9. The BASIC Stamp • Signal ConditioningConditions voltage signals between USB connection (+/- 12V) and BASIC Stamp (5V) • EEPROMStores the PBASIC program. • 5V RegulatorRegulates voltage to 5V with a supply of 5.5VDC to 15VDC • System ClockSets the speed at which the instructions are executed • PIC-16C57 MicrocontrollerExecutes the PBASIC instructions stored in the EEPROM

  10. The BASIC Stamp Why is it called the BASIC Stamp? • First; it runs programs written in the BASIC programming language. Beginner's All-purpose Symbolic Instruction Code • Second; It looks like, and is about the size of, a postage stamp.

  11. The PIC-16C57 Microcontroller The Microcontroller on the BASIC Stamp • The PIC name refers to "Peripheral Interface Controller" • 8 Bit System / CMOS Technology • 20 General Purpose I/O Pins • 8 Bit Counter • 2 K Bytes of EEPROM • 72 Bytes of RAM • Manufactured by

  12. BASIC Stamp Development System Icon to Start BASIC Stamp Development System Current Directory Standard Tool Bar Directory Sub-Window This window shows all the directories and sub-directories on your hard drive. Program Sub-Window This is where your program goes. File Sub-Window This window shows all the BASIC program files that are in the current directory

  13. Resources Parallax Inc. (2004). What’s A Microcontroller. • Retrieved July 15, 2009 • fttp://www.parallax.com/tabid/440/Default.aspx

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