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cross mob
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Hi there,

I have been testing the RGB Arduino Shield, does anyone know the default frequency that the PWM dimming is set to ?
Am I correct in presuming it is not possible to change this frequency unless DAVE is used ?


I'm hoping to eventually use an XMC1202 in white LED lighting system that will have to work with machine vision cameras that will be using fast exposure times (maximum 2000 micro second and maybe down to 50 micro second) combined with high frame rates.

From my quick tests so far, driving a prototype light (12 x Cree XPG2 @ approx 700mA) I'm seeing flickering when dimming at 25% brightness or below, when my camera is set from 2000 micro second exposure times and running at anywhere between 30 and 500fps.

Cheers,
mala
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