EE 396: ACCESSORS

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EE 396 ACCESSORS..Critical Design Review

• Group Members
• Allen Bui
• Ruthsenne Gagarin
• Erica Salvador

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Brief Overview of the project

• Objective
• To create an accessor, a device that provides
  access for individuals who have limited
  abilities. This accessor will be a household
  utility controller that will allow the user to
  (independently access) interact with common
  household appliances.

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Project meaning

• Millie
• Bio ? Cerebral Palsy
• Needs ? Independence
• (Access to the following appliances)
• TV
• Phone
• Radio
• Solution to Needs
• Modify X10 Home Automation Kit

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Components Needed

• Mount/user input
• LED Display
• Picaxe
• X10 Remote (Wireless Communication Controller)
• Appliances
• TV, phone, radio

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Scanner sub-modules

• LED Display
• Vertical display
• Horizontal display
• Digital Signal Generator

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Physical set up
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Overall block diagram

• Scanner/LED Display
• Controller (X10)
• Transceiver

Major modules
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real switch output address crosspoint address input pins
1ON 0001 0110 A6 in0in7
1OFF 0010 0110 B6 in0in6
2ON 0001 0101 A5 in1in7
2OFF 0100 0110 C6 in1in6
3ON 0010 0101 B5 in2in7
3OFF 0100 0101 C5 in2in6
4ON 0001 0100 A4 -----
4OFF 0010 0100 B4 -----
5ON 0001 0011 A3 -----
5OFF 0100 0100 C4 -----
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Two picaxe set up
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If want to turn appliance 1 on, output 0001 0110
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SCANNER-LED Display Circuit Layout
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Pseudo Code Map Scanning Module
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Pseudo Code Block Diagram Scanning Module
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SCANNER-LED Display Code
symbol counter c1 main for counter 1 to 2
'Scanning LED lights vertically high 1
'appliance 1 wait 1 if pin4
1 then hdisplay 'input low 1 high 2
'appliance 2 wait 1 if
pin4 1 then hdisplay low 2 high 3
'appliance 3 if pin4 1 then
hdisplay wait 1 low 3 next counter end hdisp
lay 'Scanning LED lights
horizontically for counter 1 to 2 high 5
'on wait 1 low 5 high 6
'off wait 1 low 6 next counter goto
main
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Methods of testing

• LEDs (LED lit, high voltage)
• Multimeter (measure for high voltage)
• Go for broke! (not preferred)
• If something smells burnt somethings wrong

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Remaining Tasks

1. Fix code
2. Final testing
3. Fabricating

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Current problems

• Picaxe too small (need one with just one more
  input!)
• Bigger picaxe enables to use more appliance and
  easier to program
• -Picaxe 28X and 40X are in the UK
• PCB design dependent on type of chips used
• How do we link two picaxe together to work as
  one?

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Gantt Chart
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Resources

• http//archimedes.hawaii.edu/
• http//www.homeautomationzone.com/x10-over.shtml
• http//cmap.ihmc.us/
• http//www.rev-ed.co.uk/detail.asp?idrev02prodna
  mePICAXE

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• What are your questions?