AVR-Chat

Daniel,

The AVR can't drive the relay directly.  You'll need a
transistor (or something) to handle the current.

Jeff Engel
Arlington, TX
--- kc9dag <dpboyer@dpicts.com> wrote:

> I have designed a circuit that works fine when I run
> it on the 
> STK500, but when I tried to move the circuit to its
> own board (this 
> is the first time I have done an avr w/o using the
> STK500) it does 
> not work.  I was wondering if someone would mind
> looking at the 
> schematic
> (http://www.dpicts.com/Tiny15L-LaserDetector.jpg)
> and 
> telling me what I am doing wrong?  The circuit
> basicly waits for a 
> laser beam to be broken (detected by the photodiode)
> and then 
> activates a relay in a set time pattern.  When I try
> the soldered 
> circuit, the relay never activates regardless of the
> laser (again it 
> worked fine when it was hooked up to the stk500,
> only using an led 
> instead of the relay.)
> Thanks,
> Daniel
> KC9DAG


=====
Happiness is - positive intake manifold pressure.


		
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