Main components

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Part NumberDescription
PCA9685PW16-channel 12-bit PWM Fm+ I2C-bus LED controller RGBA TSSOP
MAX485EHalf duplex RS-485/RS-422, 2.5 Mbps, ±15kV electro-static discharge (ESD) protection, no slew-rate, no low-power shutdown, with receiver/driver enable, 32 receiver drive capability, DIP-8 and SOIC-8
fermion-mp3

controlbox schematic

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controlbox board layout