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???
03/28/12 11:00
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#186935 - Success
Responding to: Michael Karas's previous message
Put the diodes across the terminals of both solenoids and it worked - interrupt no longer triggered and circuit fully functional.
In relation to keypad, the actual physical keypad is western style and thanks for pointing that out.
Also thanks for yer help on the solenoids.. overlooking this could have been a costly error.

Finally thank you Michael for your review of the circuit - very help moving forward.

List of 12 messages in thread
TopicAuthorDate
Interrupts, the 8052 & Solenoids      Cian Young      03/24/12 13:33      
   Freewheeel diodes      Per Westermark      03/24/12 15:00      
      ULN2003a      Cian Young      03/24/12 18:34      
         more than one inductive load here      Jim Granville      03/24/12 19:11      
            Solenoids      Cian Young      03/24/12 19:26      
               diode choices      Jim Granville      03/24/12 19:42      
         Diodes in ULN2003a      Michael Karas      03/25/12 08:21      
         Within this chip      Erik Malund      03/26/12 07:03      
            Do I hear...      Michael Karas      03/26/12 07:07      
   Irish keypad layout!!      Andy Neil      03/25/12 06:27      
   Lack of resistors.      Michael Karas      03/26/12 08:00      
      Success      Cian Young      03/28/12 11:00      

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