ECE 290 Remote Control Scoreboard

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ECE 290 Remote Control Scoreboard

• Jared Holtman (EE)
• Garrett Mayhew (EE)
• Scott Hardison (EE)
• Advisor Quing ZhuSponsor John Fikiet

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Need/Motivation

• Different types of scoreboards

Source www.uconnalumni.com
Source www.electronic-scoreboard.com

• Scoreboards have different purposes
• Our purpose is to create a multi-sport
  scoreboard that is cost efficient, portable and
  easy to use.

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Design

• Layout of scoreboard
• The design was created purposely to incorporate
  multiple sports mainly baseball, soccer and
  football. Because of the design the list of
  sports that can use the scoreboard is almost
  limitless.

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BLOCK DIAGRAM

• We have the basic layout of the scoreboard, but
  how do we communicate the data?

• The block diagram above shows the basic flow of
  data. This will be refined later.

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Issues How to communicate data?

• Which form of wireless communication should we
  use to transmit the data?
• Infrared used in ECE266, easy to implement,
  however the signal strength is limited to 30 ft.
• To overcome this we need to amplify the signal
  somehow this is discussed later in more detail.

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Issues How to address data?

• Transmit data but how to direct it to proper
  destination?
• - This is done by addressing which takes place
  using the PIC microcontroller
• The microcontroller has 30 outputs allowing each
  7 segment display to have its own output.

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Refined Block Diagram

• This block diagram is refined to reflect using
  IR and shows how the signal is going to be
  amplified.
• Also shown are two microcontrollers one for
  decoding and one for addressing.

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• This concludes the scoreboard layout design and
  the encoding/decoding.
• Discussed next will be the other details of the
  project including additional research and other
  details of the design such as lighting, power,
  battery, microcontroller, etc.

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Electromagnetic Spectrum

• Broad range of wavelengths being used
• Visible Light Spectrum
• 380nm to 750nm
• Infrared Light
• 750nm to 1mm

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Visible Light

• Visible light
• Red has the broadest range of visible light
  (620nm-750nm)
• Human eye sees red the best because of cones in
  retina
• Scoreboard will display red numbers
• Will be visible at a minimum of 300

Source www.wikipedia.org
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Infrared Light

• Infrared light
• Will be used in amplifier circuit as the
  transmitter of digital signal
• Couple different ways to implement this
• Multiple IR LEDs
• High wattage IR LED ( 1 watt)
• Amplifying lens
• We will use IR LED in range of 850-950nm with an
  acute beam angle

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Scoreboard Display

• 7 Segment display

• Estimated using 3 to 4 L.E.D.s per segment

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Microcontroller

• A computer-on-a-chip used to control electronic
  devices
• It is a type of microprocessor emphasizing
  self-sufficiency and cost-effectiveness, in
  contrast to a general-purpose microprocessor
• Contains all the memory and interfaces needed for
  a simple application
• Typical applications are 8 or 16 bits
• Our application will use an 8 bit PIC
• Clock Microcontroller has crystal oscillator
  (Usually 4Mhz) which can be used to implement
  running clock display on the scoreboard
• Will use multiple microcontrollers
• One to control Home, Away score, and
• period
• One to control clock set and countdown

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Power

• Scoreboard
• Researching battery
• - 12V Lead Acid
• Battery will be external to the scoreboard
• Remote
• AA Batteries for remote control
• - Internal to device

www.allelectronics.com
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Power Budget

• Display will consume the most power
• Find full load current red LED
• Find full load voltage drop of red LED
• Take product of the two and this will be power
  consumed by each LED

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Timeline
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Budget
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Future Plans

• Create a device that will prove proof of concept
• - small 7-segment LED display that responds
  to remote control input
• Implement proof of concept on a larger scale
• Amplify signal to improve distance with remote
• Create a fully functional scoreboard

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Questions?

• Please see our website for further inquiries
• and documentation

http//www.engr.uconn.edu/ece/SeniorDesign/project
s/ecesd77/