1. Archimedes EE 296 Tha X-Roaderz PRESENTS: FINAL PRESENTATION

2. Archimedes Tha X-Roaderz KEVIN – Team Leader / Website AMY – Sensors / Lights / Sounds TIO – Speed Controller / Crossing Gate / PPTs MOUSSA – Speed Controller / Track Switching

3. Archimedes 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.

4. Archimedes Initialize X-Road

5. Archimedes Block Diagram

6. Archimedes Design Structure User Interface: Flex Sensor >> Motor Controller: H-Bridge >> Gas Pedal: User Interface >>

7. Archimedes Setup: Ghetto

8. Archimedes Setup: Final

9. Archimedes PICAXE

10. Archimedes PICAXE Processor Schematics

11. Archimedes 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 <= 280 then stopdrive if w2<w1 then rampup if w2>=w1 then rampdown rampup: w2=w1 'increment w2 value goto drive rampdown: w2=w1 'decelerate immediately goto drive drive: pwmout 3,125,w2 goto main stopdrive: pwmout 3,0,w2 goto main interrupt: if pin2 = 1 then interrupt toggle 0 toggle 1 setint %00000100,%00000100 return

12. Archimedes H-Bridge Truth Table H-BRIDGE

13. Archimedes Sensors We changed from using the reed relay to infrared sensor. Reed relay didn’t 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.

14. Archimedes 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 don’t 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.

15. Archimedes Sensors One of the problems we had with the inferred was the way we have to put it. We couldn’t 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.

16. Archimedes Problems Power Supply over 5V Smoked PICAXE’s (SORRY SANDY!!) PICAXE ≠ OPAMP!! (Moussa, get your moneys back!) Train Stopping Randomly Time Management / Team Availability

17. Archimedes Outstanding Problems Track Switching Lights Train Mishap (today)

18. Archimedes Project Status Completed overall

19. Archimedes 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

20. Archimedes DEMO!!... DEMO YOUR STUFF!

21. Archimedes THE END THA X-ROADERZ! MOUSSA TIO AMY KEVIN http://www2.hawaii.edu/~kahing/ Roaderz’ Website:

22. Archimedes QUESTIONS... ?... anyone ?! THA X-ROADERZ