I would like to thank JLCPCB for sponsoring this project.
This toggle-able RGB stick can produce 7 different colours - Red, Green, Blue, Yellow, Cyan, Magenta, and White by setting the switch to different combination.
We choose the resistors based on the current, I = (V supply - V forward) / R.
The supply voltage is 5V.
R = 150 ohm for the Red LED.
R = 100 ohm for the Green and Blue LED each.
We can solder a USB C female board to the VCC and GND copper pad for the supply voltage.
Thank you JLCPCB again for the sponsorship and please order your PCB at jlcpcb.com/RAT
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