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I'm pretty new to electronics and kicad. I would like to understand how to add a physical switch to my circuit using molex connection.

I'm adding my initial schema. enter image description here

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  • \$\begingroup\$ please explain what you do not understand about switches \$\endgroup\$
    – jsotola
    Apr 4, 2020 at 17:49
  • \$\begingroup\$ I have the connector J1, It is a molex connector. I wanted to know if I connected it correctly so i would be able to connect a physical switch through J1. I want to control the current between "BatteryVin" to "Switch" so it won't be on all the time. \$\endgroup\$
    – or bi
    Apr 4, 2020 at 17:52
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    \$\begingroup\$ a switch is basically the same as touching the two wires together .... think about this, take BatteryVin wire in one hand and the Switch wire in the other hand and touch them together ... that is what a switch does \$\endgroup\$
    – jsotola
    Apr 4, 2020 at 18:05
  • \$\begingroup\$ Yes, so what I did is ok? if one end is connected to "BatteryVin" and the other end is connected to "Switch", then I connect my physical switch to "1,2" and it will make sure that if the switch is off then no current will flow from "BatteryVin" to "Switch"? or should I change something? \$\endgroup\$
    – or bi
    Apr 4, 2020 at 18:11
  • \$\begingroup\$ that is correct, nothing to change .... make sure that the switch is rated for the voltage and current that will be switched ... AC and DC ratings are not interchangeable ... for example, a switch could be rated for 10 A AC and only 3 A DC \$\endgroup\$
    – jsotola
    Apr 4, 2020 at 18:18

1 Answer 1

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KiCad is not a system design program. Which means it does not care what you connect externally to the pcb but only which things are soldered to the pcb to do so. There are a lot of options how to connect external stuff in general https://forum.kicad.info/t/how-to-connect-a-wire-to-the-pcb/18262


You can however still use KiCad to also document what is externally. Either by use of general graphics, by use of text comments or by placing symbols and wires but excluding the symbols from being part of the netlist via adding "#" in front of the reference designator.

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