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5 pin connector recommendations that have both male and female sockets available
(self.askelectronics)
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If you solder together the ends on the LED you'll only need 2 pins
By soldering the ends of the LED, do you mean the 4 earth connections? I should probably have clarified that the 4 "earth" connections only lead to earth when the mosfets connected to the LED is open. Each connection leading to earth is for either, R, G, B or W so they can't be soldered together.