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???
05/12/06 20:51
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#116139 - Port pin go POOF!
Responding to: ???'s previous message
Erik Malund said:
Charles, you forgot the series resistor

And the diode across the relay coil.

And check carefully the ratings of the port pin.

But, those details aside, the basic idea is fine.


List of 22 messages in thread
TopicAuthorDate
Interfacing a Bi-colour LED            01/01/70 00:00      
   a link to the bi-color LED datasheet            01/01/70 00:00      
      Datasheet!!            01/01/70 00:00      
   LED info            01/01/70 00:00      
      He is right, the Vf max for the LEDs you            01/01/70 00:00      
         More info on H bridge?            01/01/70 00:00      
            that is what a H bridge usually is used            01/01/70 00:00      
               be careful, but roll-yer-own            01/01/70 00:00      
   Why no use a DPDT 5VDC relay?            01/01/70 00:00      
      LED go poof            01/01/70 00:00      
         Port pin go POOF!            01/01/70 00:00      
         ?`            01/01/70 00:00      
            Two inverters            01/01/70 00:00      
               darn            01/01/70 00:00      
               YES!            01/01/70 00:00      
                  Third color possible?            01/01/70 00:00      
               Very nice however            01/01/70 00:00      
                  Two NAND's?            01/01/70 00:00      
   how many LEDs            01/01/70 00:00      
      a slight problem            01/01/70 00:00      
         dynamic refresh            01/01/70 00:00      
            sure, but            01/01/70 00:00      

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