PICkit 2 VPP voltage error... help :(

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Villevissen

Joined: 12 Feb 2009
Posts: 7

12 Feb 2009 17:38 vpp voltage error

Hey, im using the PICkit but have encountered a problem, when ever i try to open the PICkit 2 software i get the message "PICkit 2 VPP voltage error". At first i thought that it was my PIC that had gotten a static shock so i bought new ones but im still getting the same message, is it my programmer that somehow have broken down? And its the same in MPLAB, claims there to be an VPP voltage error Sad

. I have changed USB ports, reinstalled vista (tho i didnt reinstall it due to this problem) but anyhow im all out of ideas so i really hope anyone of you might know what to do Smile

blueroomelectronics

Joined: 17 Sep 2006
Posts: 1681
Helped: 99
Location: Toronto, Canada

12 Feb 2009 20:09 pickit 2 vpp voltage error

Use the PICkit2 troubleshooting tool and a multimeter.

Villevissen

Joined: 12 Feb 2009
Posts: 7

12 Feb 2009 20:54 pickit2 vpp

hmm dont have a multimeter but the troubleshooter says there is a short or very heavy load but i really dunno whats causing that :S im using the demoboard that came with the PICkit 2 programmer so there shouldnt be any shorts ^^ hmm tho when i plug the demo board out n test the VPP it says everythings fine.

prodigyaj

Joined: 10 Jan 2007
Posts: 50

13 Feb 2009 5:16 pickit2 vpp error

Are you using PICKit2 for the first time ?
I get these problems when pins are not connected properly or there is any kind of shorting between two pins that will be used for programming !!
Also I hope you are not tieing the MCLR pin to Vcc while programming !

Regards

AJ

Villevissen

Joined: 12 Feb 2009
Posts: 7

13 Feb 2009 14:16 vpp voltage

It have worked fine before. n as i said before im using the demo board that came with it, hmm might try to make a new one Smile

and the MCLR pin shouldnt be connected to the Vcc ^^

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mvs sarma

Joined: 23 Apr 2006
Posts: 381
Helped: 36
Location: Hyderabad, India.

13 Feb 2009 14:29 pickit2 vpp voltage error

Villevissen wrote:

A DMM costs just under $.5/-. If you are a student, perhaps you can use it anywhere.

funnynypd

Joined: 09 May 2007
Posts: 919
Helped: 21
Location: USA & Canada

13 Feb 2009 16:37 vpp error

I bought one for about US$2, never see one for 50Cents (US$).

mvs sarma

Joined: 23 Apr 2006
Posts: 381
Helped: 36
Location: Hyderabad, India.

13 Feb 2009 17:30 pickit 2 no device detected

funnynypd wrote:

I bought one for about US$2, never see one for 50Cents (US$).

Oh, I also meant $5/- generally we use a "." after the currency mark "Rs.250/-" would amount to approx$5/-
it was taken as a decimal and you might have supposed $0.5

Villevissen

Joined: 12 Feb 2009
Posts: 7

13 Feb 2009 18:46 pickit 2 voltage error

I've done some further testing now, i made a new "demo board" from one of those labboards hehe anyway now i know the Vpp aint short but it still claims it is. i tried to pull out the Vpp but then it says "No device detected". So is it just to throw the programmer out da window? oh if so what programmer would you guys recommend? Smile

want a cheap one Wink

mvs sarma

Joined: 23 Apr 2006
Posts: 381
Helped: 36
Location: Hyderabad, India.

13 Feb 2009 19:20 pickit 2 vpp error

Villevissen wrote:

want a cheap one Wink

Is it working with winXP or on some other PC/laptop?
While curiosity kills a cat, impatience perhaps kills a man's design. we cant throw out each and every thing that poses a problem. If PICKIT2 ( i suppose Microchip's) did not work for you, what ever you make might behave the same way. Nonworking situation is a given opportunity to learn and become more skilled and analytical.

as Bill rightly suggested, have proper testing tools so that you can approach logically.

Villevissen

Joined: 12 Feb 2009
Posts: 7

13 Feb 2009 19:33 pickit 2 vpp

hmm good idea Smile

gonna go down to my mate and test it Smile

oh and ill look up what the MM will cost Smile

mvs sarma

Joined: 23 Apr 2006
Posts: 381
Helped: 36
Location: Hyderabad, India.

13 Feb 2009 19:42 pickit2 voltage error

Villevissen wrote:

hmm good idea Smile

gonna go down to my mate and test it Smile

oh and ill look up what the MM will cost Smile

DMM based tests, can be done in the lab also using its facilities. not that you need to spend for it.

BTW, why not try to run it without connecting to any external device, whether the same message comes? then whether your USB socket is giving out too low a voltage like 4.5V or 3.3V?

Villevissen

Joined: 12 Feb 2009
Posts: 7

13 Feb 2009 23:15 pickit2 programmer vpp error

I've tried to not connect anything to the programmer and then test it, works fine but when i connect the Vpp it says that its a voltage error again. Oh and i was down in my mates room and tested... same problem there Sad

mvs sarma

Joined: 23 Apr 2006
Posts: 381
Helped: 36
Location: Hyderabad, India.

14 Feb 2009 2:50 error pickit 2 low vpp detected vpp

Villevissen wrote:

Now see whether the pins of the Pickit2 are connected properly to the pins of the target. I know of one Microchip board where the target pins have numbering mis-printed as per Microchip forum.
Don't reverse the connector immediately, but check whether really pins 1 to 6 represent the same as per your board by physical observation of components.

Finally talk to local microchip support and it is known that they would help you out to restore your Microchip- forbid the high courier charges to and fro on you head, though.