Designing the Circuit Diagram

The picture above is the circuit diagram that we want to modify for the remote control. Four 6 volts relays used to connect with the push buttons at the remote control circuit. Relays function as a switch to operate the remote. For this circuit, we use 5 pins relay. Relays have two circuits which are a control circuit and a load circuit. The relay's switch connections are usually labelled COM, NC and NO:

COM = Common, It is the moving part of the switch.
NC = Normally Closed, COM is connected to NC when the relay coil is off.
NO = Normally Open, COM is connected to NO when the relay coil is on.

Investigate the circuit in the remote control

We have discussed with our supervisor about the circuit. Based on the discussion, we just have to modify the circuit in the remote control. Firstly we have to identify on how many buttons that we need to program. We have checked out the circuit and found that there are four push buttons used by the thumb-stick which are the up, down, left and right.

View the circuit

This Stunt vehicle has a very complicated circuit and it is very compact.




The circuit consist of transmitter and receiver. We still couldn't explore the circuit since it is very compact and small. Otherwise we don't have the schematic diagram.


The transmitter fitted at the remote control in order to transmit the signal to the receiver circuit that fitted inside the car. The circuit has its brain which is the micro-controller that program and process the movement of the car. The front and the rear motor act as the output of this product that perform the movement.