Yup, that's the idea. It works a _little_ on these LEDs, but it doesn't cover the whole body of it. Currently driving them at 1KHz, 50% duty cycle, first red, then green. If the body diffused the light better it might work. Andy Dan Michaels on 06/26/2000 03:07:07 PM Please respond to pic microcontroller discussion list To: PICLIST@MITVMA.MIT.EDU cc: (bcc: Andrew Kunz/TDI_NOTES) Subject: Re: [OT]: 3 colors from an LED Andy wrote: >Did that. You still see a red side and a green side. > >Good idea, though. > Huh??? Hold voltage1 --> red. Hold voltage2 --> green. Pulse opposite phases --> amber. ???????????????? - Dan ===== >Try pulsing red and green on opposite phase, with various duty cycles >for different amber hues. To trick the eye, ie, to get persistence of >vision, use pulserate >> 25 hz. > >