When soldering always make sure the soldering iron tip is hot and clean. To test if it is hot enough, try to melt a piece of solder on the tip. The solder should melt instantly. Then clean off the melted solder by wiping the tip on a damp sponge. Always make sure the tip has a thin coating of solder before you start. Use a flux to keep the tip clean. Remember that solder will only ‘stick’ to hot surfaces. Therefore never melt the solder on the soldering iron tip and then try to ‘drop’ it onto the joint - this will not work as the joint will be cold and so the solder will not ‘stick’. To successfully solder you must hold the soldering iron in one hand and the solder in the other. Therefore make sure the PCB is held on the table so it will not move, use a bulldog clip or small vice.

PCB_board_project.pdf

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