AVR-Chat

--- In AVR-Chat@yahoogroups.com, "Paul Maddox" <P.Maddox@s...> wrote:

> Yeah, I do it all the time ...

For beginners, maybe we should point out that during programming the 
programmer has to drive the LED currents, which it may not actually 
be designed to do. So, success may depend on which programmer is in 
use and the value of the LED current.

For example, this would not work with my JTAG interface. There are 
resistors in series with all the inputs and outputs intended to guard 
against connection to the wrong header, backwards connection and 
other accidents. I don't have an ISP programmer, but if I did it 
would also have current limiting resistors.

Graham.