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PICKIT3 ICSP Power on voltage

Discussion in 'Oshonsoft' started by camerart, Feb 13, 2017.

  1. camerart

    camerart Active Member

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    Hi,
    I have a circuit, with 18LF2520. It is programmed with Pickit3 ICSP. There is an LCD.
    The PIC has a 3.3v regulator and the Pickit3 is set to 5v, which it appears to recommend in settings.
    If I power it with the 'button' on the Pickit3 external power circuit, the LCD shows results, but if I power it with the reguatolr, it doesn't start.
    Any ideas please?
    Camerart.
     
  2. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    Why are you trying to power it with 3.3v?, doesn't the LCD require 5V? - the normal Hitachi 1602 ones do.
     
  3. camerart

    camerart Active Member

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    Hi N,
    The PICs controlling an SX1278 radio module which is 3.3v. So far I haven't got this to work, but I also connected an LCD as an experiment. This is powered by 5V, but the DATA is 3.3v plus GND, and as mentioned is working.
    C.
     
  4. dave

    Dave New Member

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  5. camerart

    camerart Active Member

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    Hi,

    I will open another thread instead of this one, that explains better.

    Here: http://www.electro-tech-online.com/threads/mixing-5v-and-3-3v-problems.150133/

    C.
     
    Last edited: Feb 13, 2017

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