Layman’s RGB LED module is an ultra-simple project realized without any ... equalized in order to match LED performance over the operating range. These ballast resistors are used in the prototype; RR ...

In a recent post we interfaced a small DMX RGB LED Par Light with an Arduino Uno through a MAX485 module ... You can see two 4.7KΩ resistors on the A&B differential lines on the module. These bias ...

It uses a 4d-micro-USB module from Dontronics to interface serially and provide power to a Picaxe 08M. The PIC can control color and brightness of a RGB LED. The feedback is given by seven colors ...

You can throw a Raspberry Pi camera and OpenCV at the problem and approach it through software, or you can buy an off-the-shelf RGB sensor and wire it up to an Arduino. Or you can go back to ...

It may look a little shoddy, but what’s amazing is that this very functional 3-D interface was built by a hobbyist with parts most DIYers can find in their couch cushions—six resistors ...