I remember writing as a kid in the mid ’70s to an electronics magazine well-known in Italy, Nuova Elettronica, asking them to publish the project of a device to display music on a TV like on an oscilloscope. They did not reply but eventually they published the project. I’m not sure I’m the one who [...]

This RGB light I designed and built a while ago. A large spectrum of coloured light can be made mixing light from bulbs coloured in red, green and blue.
So, this one is not based on LEDs but it’s based on 3×60W 220/110Vac light bulbs.
Also, it has a remote controller to change intensity of the three [...]