Thank you JLCPCB for sponsoring me this project.
The star PCB uses transistors and capacitors to create 2 sets of alternating square waveforms which light the LEDs.
Frequency, f = 1 / (0.68 * 2 * R * C)
We are using 7.5K ohm resistors and 100uF capacitors, which gives us about 1 Hz frequency. The cycle is about 1 second.
The 200 ohm resistor is used to limit the current to avoid overheating of the circuit.
Current, I = (5 - 2) / 200 = 0.015A for each set of 6 LEDs.
I would like to thank JLCPCB again for sponsoring the PCB and please buy your PCB at jlcpcb.com/RAT
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