![]() You won’t be able to get good calibration off a simple Arduino with trimmers for this reason: there’s no Low Pass filter on the AVCC input on Arduino boards, genuine or not. I use 10K ones.Įxternal 5v power supply OR a second Arduino with separate power supply ![]() The sketches are provided.Īn Arduino with USB connection (Serial Monitor working)ģx potentiometers (trimmers, trimpots). You won’t need to have any programming or engineering experience to use it unless you want to experiment. So here’s the instructable that will help you make your RGB LEDs display exactly (at least, as possible) the colors you need. ![]() Well, practice shows it’s not that easy (just try doing it). It may seem an easy task: just connect three pots (trimmers, potentiometers, trimpots) to your Arduino to adjust red, green and blue. I had to find a better way to color-calibrate RGB LEDs. But once I started to make some more or less serious stuff it became insufficient. One bunch has a very dark blue tint, the other one has blue that looks almost as white… Well, there IS a problem with these guys, as they are not like your monitor pixels: they actually produce colors (not just tint the white backlight) and are not calibrated.įor some time, I used a simple sketch with Serial Monitor input to get the values relatively right. The problem is, these LEDs are awfully unpredictable. Well, maybe I’m slow or maybe it’s just that I’m a graphic artist, but I do like my LEDs and my Arduinos. Thereafter you have to go towards motors, smart homes, and other ‘serious’ stuff. Most people think LEDs and Arduino’s relations end with the Blink sketch.
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