Mini LED running-lights

Flexible tubelight units containing many vividly coloured lights are very popular ornaments these days, and they are seen in many shop windows, bars and discotheques. Although extremely compact, the circuit presented in this article contains all the electronics needed to make such a 'lighting tube' yourself. Thanks to the modular structure of the circuit, the number of lights may be extended to any requirement. Because LEDs (light emitting diodes) are used instead of small lamps, different colour patterns are easily created.