1st step : Connect the supply wire to all switch and another pin at the switch connected to the relays. Then connect the ground wire to the ground pin. This will allow the current flow through the relays.
2nd step : From the relays, we connect the common wire and the NO wire to the transmitter controller circuit. This will allow the switch in the relay to control the button at the controller.
3rd step : We supplied 5V to the circuit by using Power Supply. Then we switch on the transmitter and the receiver circuit of the car. Then we simulate the circuit by pushing the button in order to see either the circuit is function or not. Successfully we found that the circuit works as it should be. When we push the A1 button, the car move forward. Then the car can reverse when we push the A2 button. Button A3 and A4 can move the car to the left and right.
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