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    Re: Instant Interrupts - Revisited

    Thanks, your post cleared it up nicely for me. New strategy now as it is a complex program with dozens of subroutines all invoked via a command from the serial port. As I mentioned, most of my...
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    Re: pbppi14e.lib errors

    I made the following change in the WHILE loop to allow me to exit. As mentioned, I use the receive register and poll it for the command. Does work, just not as elegant as I would prefer. Addition...
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    Universal Serial-Parallel LCD Controller

    Having designed a few hundred PIC circuits at work I thought perhaps I could contribute some of my more useful designs.

    This is an LCD interface that allows a serial communications connection...
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    589,631

    Re: pbppi14e.lib errors

    The entire code is a couple of hundred lines so not practical to post all of it. I stripped it down to the absolute minimum to focus on the handler. I am using the uart interrupt to monitor for a...
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    Re: pbppi14e.lib errors

    1st off wish to thank Darrel for a very useful routine. Now my issue. It seems when in a WHILE loop or a REPEAT..UNTIL look the interrupts are no longer detected. I am using the UART interrupts...
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    A LTC1440 can do it and is what I use for one of...

    A LTC1440 can do it and is what I use for one of my systems with 9V battery operation. It can operate with supply voltage from 2-11 volts. 2 resistors to set the trigger point and a on/off output...
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    Those are hall effect current sensors and cost...

    Those are hall effect current sensors and cost around $10.00. The advantage is that it fully isolates the PIC from the current source and in the case of a motor that will be important due to back...
  8. I've just joined so apologies to responding to...

    I've just joined so apologies to responding to older topics. Will respond to only topics where last responses that are within two weeks to prevent digging up 1-2 year old posts. :)

    You can make a...
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    An easy way to understand it without going into...

    An easy way to understand it without going into thevenin equivalent circuits. :p

    Consider the plus side and the 0 (ground) side of the power source as low impedance sources. In an ideal power...
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