On 16 Sep 97 at 8:53, Tjaart van der Walt wrote: > If you use an emittor follower on the PIC pin (that drive the LEDS), > you can charge a cap through a diode. The LED draws its current from > the cap via a current limiting resistor. This will introduce some > latency, but your LED's will be switched on 100% and won't POP if > your program freezes. Thats cute! You've introduced 'phosphor persistence' to an LED! Although - I suspect Shane was going for a zero or minimal external parts count. If you wanted a 'debugging circuit' until your s/w was 100% (hah!) you could use series caps / resistors and a few diodes to stop overshoot. > > I don't particularly feel like ASCII art, but if you want me to, I > will attempt to draw it... > Yuk! What's a civilised gfx format that we can all read? (that a schematic package outputs - hpgl, eps?) MikeS (remove the you know what before replying)