Helios is an ILDA laser controller DAC/adapter, used for connecting laser show projectors (not included) to your computer. It is compatible with every laser projector with a standard ILDA port, and connects to any computer using USB. The Helios is very low cost, yet fast and with high resolution. It is compatible a wide range of software, including free and cross-platform options. This combo listing includes a 2 meter (6.5 feet) ILDA cable, and a 2 meter USB cable. Both the hardware and the software of the Helios is open source. With cross-platform libraries, including example code in C++ and Python, it is easy to integrate the Helios into your own projects.