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[AVR-Chat] Need Help with a circuit

2004-08-12 by techy fellow

Since you mentioned you are using a relay instead of a Led on your actual circuit, could it be, there is insufficient 'juice' to active the relay on your actual circuit ?

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


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