> > >amplified and clipped > > If one were to use an analog signal, rather than digital, amplified and clippe d, > audio on the LED array anodes, the fundamental frequency would be the brightes t > pattern, and harmonics would show up dimmer. This could speed the tuning > process and give more information about any signal analyzed with this > stroboscope. Use a 16C57 and make the strobe string really long, put it in a circle and remember to modulate the LED analog signal as a current drive. -- Kalle Pihlajasaari kalle@data.co.za Interface Products Box 15775, Doornfontein, 2028, South Africa +27 (11) 402-7750 Fax: +27 (11) 402-7751