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Design assistance needed

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Hi,
I am looking to build a Bluetooth controlled LED circuit.
There must be 4 separately addressable LED arrays each with driver to control current.
A battery, charger and protection circuit.
A sensor to measure distance from the LED's to the surface they are lighting up.
A sensor to measure the darkness of the lit up surface by measuring the reflected light and taking into consideration the distance.
Any assistance would be much appreciated.

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