Your documentation states that hooking up the ISL29125 to a 5 V board will damage the sensor. I just accidentally hooked this breakout board up to a 5 V Pro MIni with an OLED display for a few minutes. It worked fine and when I reconnected it properly to a 3.3 V board, it still worked fine. Was I just lucky? Or will the ISL29125 really be OK at 5 V?
I believe you have just gotten lucky…if you leave it hooked up for an hour, what happens?
Well, considering that I just got lucky, I definitely won’t do it again. 3.3V boards only! Thanks. BTW, it’s a very nice sensor board. To characterize surfaces in its field of view, of course the counts from the separate channels aren’t helpful because they are dependent on the overall brightness of the scene. Use these ratios: R/total, G/total, B/total, (R+B)/total, (R+G)/total, (B+G)/total. These ratios will be scene-dependent and will provide some characterization of the scene.