Off the shelf RGB colour pickers allowing you to extract and objects RGB values can range from a few hundred dollars to thousands depending on your needs.

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Just to quickly flag these ones - if developing Arduino-based IoT Cloud apps, you can now present extra information in widget form... Specifically, Arduino has introduced - for Arduino IoT Cloud ...

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Making a servo tester using an Attiny85 micro chip, Attiny45 also works for this project. This diy servo tester is as good as ...