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Driving string of RGB LEDs over distance

Hi,

I need to drive 40 x RGB LEDs spaced at 25cm intervals over a distance of 10mts.

Initial thoughts are to make a small PCB for each LED and use 3 Infineon BCR401R constant current LED drivers for each to ensure even brightness along the cable run.

Hook-up wire for daisy chaining the PCBs will probably be solid AWG24. Space is quite tight - the PCBs need to fit in a channel which is only

10mm wide.

The LEDs will be driven in PWM mode (for colour mixing) using a micro and NPN bipolar/P channel FET switching the high side of 5, 9V or 12V.

Any suggestions or "gotchas" please?

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Mike
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