How to test this?

Discussion in 'The Projects Forum' started by evios, Feb 21, 2009.

  1. evios

    Thread Starter Member

    Nov 9, 2008
    Hey guys, I just implemented this project by bhabbott on watt meter.
    I'd built it and I tried to test it. Well, at the start up, I manage to get some characters appear on my LCD. Then I tried to connect a resistors across the LOAD+ and LOAD-. It seems nothing much change on the LCD. Anyone know how to test it? I'd asked the author but somehow he seems he is on a vacation maybe. Thanks if can help. :)

    [The Link]
  2. bertus


    Apr 5, 2008

    There is very little comment over there.
    From the sourcecode you can see what the buttons should do.

    page button (S3)
    hold button (S2)
    blades button (S1)

  3. evios

    Thread Starter Member

    Nov 9, 2008
    OK.. I'll keep track on that.
    Erm..may I have some concept here? If a schematic has been built with LCD being displayed, it supposed works well isnt it? :confused:

    And, i uses 1 Ohm of shunt resistor instead of 1 mili. Can anyone suggest a suitable materials that can be used as a load? Thanks.

    P/S: I am using a 9V battery.:D
  4. evios

    Thread Starter Member

    Nov 9, 2008
    I see, so a 51mA cant show a 9A reading.
    OK, thanks.

    Erm.... I have one thing which is confusing here, 4 data buses connected to the LCD, which two are used to control LCD and which two are the one actually sending the value? ;)

    Thanks again.
  5. eblc1388

    AAC Fanatic!

    Nov 28, 2008
    I thought the author has disabled the PIC external reset pin in the configuration.

  6. evios

    Thread Starter Member

    Nov 9, 2008
    OK, so the RESET button is being disabled. Thanks.
    And now it is working. I tried to get the output of the meter to the RF module via digital IO.
    I get this:

    Em....I curious why am i getting this ... get any experts guide me? Thanks a lot.
    (The RF input when detected any changes on the meter output, it will starts getting data. It is same like getting it via Hyperterminal.)
  7. evios

    Thread Starter Member

    Nov 9, 2008
    Well, I am using the schematic diagram of the link shown below for the watt meter.

    [Watt Meter schematic]

    And the ASM programming below:


    And the XBee I am using having the pins as shown below:

    I know DI3 using serial input, so i tried to avoid that. Instead I am using the digital IO. I am trying to connect like this as my first attempt:


    I am testing on one input first. If you know, I use the AT command as follow:

    ATD1=3 'input at pin 19
    ATIC=2 'Send on DI1 changes
    ATAC 'applied

    First, it keeps on sending data. After a while, when i connected the Load, then only it will sending data.