Return to Project Brief

SubSystem : OP3

Task Title:
Vehicle Safety System

Name:
Relay Driven Outputs


OnTrack
equipment you will need:

IP3, OP2, IP1, P2, OP3 Modules
Bridge Power Base
Component Card
8 x 2mm White Leads
2 x Crocodile Leads
Motor

 


Connecting Subsystems:

1, Connect sub system 1 (IP3 and OP2). Use two white leads to connect to the relay as shown in fig 3 above.

2, Connect sub-system 2 (IP1 and P2). Connect four white leads to the 20K variable Resistor and to the L.D.R.

3, Connect sub-system 3 (OP3). Use four more white leads to connect the switch side of the relay so that it follows the circuit diagram shown on the CD. Two crocodile clips are finally used to connect up the motor (see fig. 3 below).

4, Check all your wiring is accurate and then connect the 9 volt power supply.

Testing and Investigating:

5, Set up sub system 1- Press the switch on IP3 and the motor should operate.

6, Set up sub system 2- Follow procedure shown for P2. The relay should click when the L.D.R. is covered.

7, Press the switch on IP3 and then move your hand backwards and forwards over the L.D.R. The motor should be reversing as you do this.