Spark plug wiring question

[playpunk]

There is a led pad on the pcb. Is that for board mounting a led, or for the + side of an led like the jmkpcb's?


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[m-Kresol]

The LED pad should be connected to the + pole of the LED. It's just, because the LDR is board mounted which makes wiring a little bit neater. The negative wire is soldered to the 3PDT as normal

[madbean]

It is for wiring to the + of the LED. R16 is the current limiting resistor so you do not need to add a resistor.

[playpunk]

Great! I want to have this up and running soon, so I needed to know!