pickit3 adding more voltage for regulated MPLAB high voltage programming

Discussion in 'Embedded Systems and Microcontrollers' started by talkcircuit, Dec 17, 2015.

  1. talkcircuit

    Thread Starter New Member

    Dec 16, 2015
    6
    0
    pickit3 adding more voltage for regulated MPLAB high voltage programming

    hi again people,

    I was wondering if anyone had some ideas on how to increase the input voltage for the PICKIT3 programmer

    It seems the max i can get the programmer up to is 4.85v at the moment. I know this is because the input voltage from my pc is only about 5v and there is a little loss at the regulator.

    so my idea was to try to solder on a 6v dc port into the rs232 power or maybe behind one of the regulators on the pickit3

    does anyone have any thoughts on how to do it right? before i kill my pickit3 trying

    I just want to be able to use the higher voltages in the MPLAB IPE software but the input voltage too low to take advantage of the higher voltages in the MPLAB IPE software.

    Maybe the hardware pickit3 is not designed to allow the software to use voltages above 5v.

    Any ideas?

    Mod Note: This is technically a different question than your other thread here so I'll leave it for awhile as others may find it useful. If its related to your other problem continue on that thread.
     
    Last edited by a moderator: Dec 17, 2015
  2. JohnInTX

    Moderator

    Jun 26, 2012
    2,341
    1,024
    Is the target board powered? PK3 will supply Vpp for the PIC being programmed but not much to run an unpowered target. I would not try to modify the PK3. Properly applied, it will do the job just as it is.

    Have you read the manual for PK3? 2.3MB download.
     
    Last edited: Dec 17, 2015
  3. Papabravo

    Expert

    Feb 24, 2006
    10,136
    1,786
    There is no way for the PK3 to control the higher voltage so I wouldn't wast my time. If you want to do higher voltage programming for some reason, save your nickels and get the programmer that you require.
     
  4. talkcircuit

    Thread Starter New Member

    Dec 16, 2015
    6
    0
    Right another forums poster said to try the 5v+ ranges on this MPLAB IPE programmer and it wont go above 4.85v

    I was just thinking if I changed one of the regulators or added a substitute higher voltage I could use those 5v-6v ranges to try to read some of these pic F chips that wont identify. t hanks then
     
  5. ErnieM

    AAC Fanatic!

    Apr 24, 2011
    7,386
    1,605
    You do not need such a higher voltage to reagan ANY PIC device.

    If you did the PICkit would be able to supply it.

    I suspect your other devices are dead.
     
  6. Papabravo

    Expert

    Feb 24, 2006
    10,136
    1,786
    I think this might be an internet pipe dream.
     
  7. nigelwright7557

    Senior Member

    May 10, 2008
    487
    71
    I am fairly sure the PICKIT3 already outputs 12 volts to /MCLR to program PIC's.
     
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