EE 296

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EE 296
PRESENTS

• Tha X-Roaderz

FINAL PRESENTATION
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Tha X-Roaderz
KEVIN Team Leader / Website AMY Sensors /
Lights / Sounds TIO Speed Controller / Crossing
Gate / PPTs MOUSSA Speed Controller / Track
Switching
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Overview of the Project

• The overview of the project is to design a train
  set so that it can be utilized by those with
  special needs / disabilities.

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Initialize X-Road
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Block Diagram
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Design Structure
Gas Pedal User Interface gtgt
User Interface Flex Sensor gtgt
Motor Controller H-Bridge gtgt
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Setup Ghetto
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Setup Final
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PICAXE
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PICAXE Processor Schematics
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Sample Speed Control Coding

• 'Train Speed Control
• high 0
• low 1
• setint 00000100,00000100
• main
• readadc10 1,w1
• let w2 w1 'set w2 equal to w1
• debug
• if w1 lt 280 then stopdrive
• if w2ltw1 then rampup
• if w2gtw1 then rampdown
• rampup
• w2w1 'increment w2 value
• goto drive
• rampdown
• w2w1 'decelerate immediately

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H-Bridge
Truth Table
H-BRIDGE
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Sensors

• We changed from using the reed relay to infrared
  sensor. Reed relay didnt work to well because
  we had a hard time finding magnates that would
  fit under the train to make the connection. If we
  used a strong magnates the train might not be
  able to move because is would stuck to the reed
  relay.

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Sensors
The magnets would make an effect on the train
motor. By using the infrared sensor, would detect
the train better. It is a lot easier to implement
because we dont have to put the reed relay at
the bottom of the tracks. The infrared just need
to put next to the track with out doing anything
to the track.
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Sensors
One of the problems we had with the inferred was
the way we have to put it. We couldnt just put
it across from each other because the gap between
each car would not break the infrared light going
to the sensor. So we had to put it in an angle
instead of perpendicular to the track.
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Problems

• Power Supply over 5V
• Smoked PICAXEs (SORRY SANDY!!)
• PICAXE ? OPAMP!! (Moussa, get your moneys back!)
• Train Stopping Randomly
• Time Management / Team Availability

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Outstanding Problems

• Track Switching
• Lights
• Train Mishap (today)

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Project Status

• Completed overall

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Time-Line

• 21 Jan 06 Basic Electronic Tutorial
• 28 Jan 06 Solder Technique Tutorial
• 20 Mar 06 Completion of Sensors /
  Controllers
• 08 Apr 06 Lights / Interfacing Completion
• 10 Apr 06 Project Completion
• 9 May 06 GAME DAY

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DEMO!!

• ... DEMO YOUR STUFF!

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THE END
MOUSSA
TIO

• THA X-ROADERZ!

Roaderz Website
http//www2.hawaii.edu/kahing/
KEVIN
AMY
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QUESTIONS ... ?
THA X-ROADERZ

• ... anyone ?!