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other problem
tq for the reply..actually there are problem appear after i tried the code u have given..when i'm sending '0' from VB and after that send "1" to th PIC.the relay does not "on".
the problem also appear after once i "on" and "off" the relay, and then i want to "on" again the relay is not "on"
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how do you interface your PIC to the PC? resistor i guess, wich value? 1k-10K is fair enough. geater than 10K seems to cause erratic behavior in some case.
Could also be a hardware problem as we see often.. psu filtering or else.
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
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resistor
the resistor i used is is 22K..
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The PIC may not supply enough current to trigger your relay. Put an LED in its place and make sure it is going on and off.
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For development i always use an LED to make sure my output is going on and off. Then I usually have to drive the relay with a transistor. I haven't found a relay yet I could directly drive.
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forget me...i was wrong
Last edited by mister_e; - 27th June 2006 at 15:50.
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
|
dumb answer here too check the next...
Last edited by mister_e; - 27th June 2006 at 15:49.
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
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