1st Step : Checking connection on the copper board. For this step, We must know Which line on the copper boards are touch to each other. We check the connection by using the multimeter - set the selector at the buzzer. The buzzer will produce sound if there is any touch point on the board.
2nd Step : Soldering Relays - There are four relays that we have to solder. Firstly, we solder the pin for common and NO. Then we solder the pin for switch and ground. We solder the jumper to each pin in order to construct the circuit based on the circuit diagram.
3rd Step : After finish soldering the relays, we solder the ground and supply of the circuit in separate copper board. We separate the board because we want to avoid any short circuit. Two long jumper were soldered in order to connect with the Power Supply.
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