One way, make a little RC circuit going to the gate of a transistor that
drives the LED.  That way it will not be blinking, and you can strobe it to
increase the RC current to the gate. On longer will turn on the gate better.
Also you can drive more power than the port is capable of (although the port
has plenty of power for a single normal LED)

Best regards,
Giles


----- Original Message -----
From: John Pearson <xero@CMC.NET>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Tuesday, April 18, 2000 11:14 AM
Subject: [PICLIST] [OT] Controlling LED brightness


> I want to control the brightness of an LED from one pic output pin. The
LED
> will be about one meter from the pic. Would the output pin be able to
> handle this by pulsing the LED?
>
> If pulsing the LED through one meter of wire is not acceptable, is there a
> hardware method to control the current - a frequency to current converter?
>
> Thanks
> John
>