DONE BY :

GABRIEL CHEK, CHRISTOPHER WICKS, CANDICE LIM, NG RUONING, LEONG KENG HOE, OOI YEE ERN & ALVIN TAN

14F04 GROUP 7 ( THE VII )PAGE 8

OVERVIEW IDEATION PROCESS PROTOTYPING / EXPERIMENTS FINAL DESIGN CONCLUSION

WORKING TOWARDS THE FINAL DESIGN

Installation of Floor LEDs

Many LEDs are needed to create the desired impact. Hence, to accomodate the wiring for these LEDs, spacers underneath the wood plank were required.

PProcess

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- Drilling holes for LEDs- Spacers- Layout of wires

(left) Wooden peg attachment system

Construction of wooden frame

As the PVC frame was rather unstable, we decided to construct modular wooden frames to better support the overhead components.

ProcessWeWe first came up with the blueprint before cutting the wood as per our measurements:

We utilised a wood-peg-wood system to hold the wooden frame together:

Installation of Overhead sensor and LEDs

To address the concern about LEDs on the floor not being noticable, we decided to install overhead LEDs. These LEDs will light up simultaneously with those on the floor.

Justifications WeWe chose to place the additional LEDs on the top of the trains because:

- Regardless of how crowded it is, the LEDs overhead will still be visible

Connecting the dots

1) Powered by ArudinoWe used Arduino to set-up an automated system in which the ultrasonic sensors, once triggered, will activate LEDs (floor and overhead).

2) Relay CircuitWeWe used a relay circuit that toggles a magnetic switch to activate a circuit that is of a much higher voltage.

This enabled us to be able to unify the Arduino circuit and LEDs above and belowinto one system.