AVR-Chat

On 1 Apr 2006, at 23:03, Henry Carl Ott wrote:

> At 07:56 AM 3/31/2006, you wrote:
> >Hello there
> >
> >
> >I'm having some weird issues with an Atmega8 based board where the
> >processor won't start the program unless the
> >avrisp dongle is connected.
> >
> >
> >You can see the circuit here 
> ><http://www.potemkin.org/uploads/Pid/arduino_rs232_v2.png>
> >
> >
> >do you have any suggestions?
> 
> >thanks!
> 
> Is the power circuit the same as the USB version? (regulator?)
> 
> That 100uf on the output of the regulator might make vcc rise a little too
> slowly. Turning on the BOD might help. But, you don't really need that cap, and
> it can hurt regulation. Try  putting in a 2.2 uf tantalum instead.
> 
> Just a possibility...
I would agree - does it start if you press the reset button?

George Smith