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Author Topic: Possible reasons of the PIC16F877A being destroyed?  (Read 818 times)

Offline lloydi12345

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Possible reasons of the PIC16F877A being destroyed?
« on: October 23, 2010, 07:06:10 PM »
3 days na akong na delay sa experiment ko dahil sa pagkasira ng 3 ko na PIC16F877A, can you enumerate possible reasons kung bakit nasisira ito? Aside from over voltage? Isa na lang natitira sakin, ayoko na masira pa ito ulit. I'm using Olimex PIC programmer hardware and PicPGM as software.
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Possible reasons of the PIC16F877A being destroyed?
« on: October 23, 2010, 07:06:10 PM »

Offline Ugin

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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #1 on: October 23, 2010, 07:22:34 PM »
Quote from: lloydi12345 on October 23, 2010, 07:06:10 PM
3 days na akong na delay sa experiment ko dahil sa pagkasira ng 3 ko na PIC16F877A, can you enumerate possible reasons kung bakit nasisira ito? Aside from over voltage? Isa na lang natitira sakin, ayoko na masira pa ito ulit. I'm using Olimex PIC programmer hardware and PicPGM as software.

In what way nasisira..di ma detect, di ma-programan, shorted....etc??
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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #1 on: October 23, 2010, 07:22:34 PM »

Offline lloydi12345

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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #2 on: October 23, 2010, 07:28:07 PM »
Quote from: Ugin on October 23, 2010, 07:22:34 PM
In what way nasisira..di ma detect, di ma-programan, shorted....etc??

I'm using PIC PGM tapos ang lumalabas, lagi ay PIC16f877a nadedetect niya ito, tapos hindi niya ito maprograman, Verify errors occured. Minsan naman "PIC Unknown" kahit hindi ko ito hinahawakan.

kanina, kahit anong codes nabuburn sa kanya, ngayon isa nlng na code. ayaw nya na tanggapin ang 4 pa na .hex files.

Edit: Yung simple flashing LED lang na .hex tinatanggap niya (paminsan minsan nag eerror), kung subukan naman sa breadboard hindi siya nailaw kahit anung paa.
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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #2 on: October 23, 2010, 07:28:07 PM »

Offline Kaizer03

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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #3 on: October 23, 2010, 07:46:30 PM »
nagloloko talaga minsan ang PICpgm in my experience...

you may try to close and open the application.. try to erase it first before programming...
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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #3 on: October 23, 2010, 07:46:30 PM »

Offline lloydi12345

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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #4 on: October 23, 2010, 08:51:29 PM »
Quote from: ┌[٠KaiZeR]٨[gigz09٠]┐ on October 23, 2010, 07:46:30 PM
nagloloko talaga minsan ang PICpgm in my experience...

you may try to close and open the application.. try to erase it first before programming...

Nagtry po ako erase, successful according to PICPgm software, kung iread ko naman siya merong .hex pa rin sa loob ng PIC, kung winpic "reading pic ok" at blank siya.. I'm so confused
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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #4 on: October 23, 2010, 08:51:29 PM »

Offline zinckingeye

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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #5 on: October 23, 2010, 09:57:21 PM »
it seems mukhang buggy ang software or ung programmer mo. then check your program. example is lahat ng portd mo is output, tapos ng nasa circuit na eh puro input ang connection, which may possible na magshort yan...
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Offline Kaizer03

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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #6 on: October 23, 2010, 10:15:13 PM »
Quote from: lloydi12345 on October 23, 2010, 08:51:29 PM
Nagtry po ako erase, successful according to PICPgm software, kung iread ko naman siya merong .hex pa rin sa loob ng PIC, kung winpic "reading pic ok" at blank siya.. I'm so confused

have you tried winpic800 instead of winpic?

i also experiencing that even now.. that's why im using the PICKit2 All the time...
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Offline RiDdLeR???

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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #7 on: October 23, 2010, 10:17:58 PM »
Quote from: lloydi12345 on October 23, 2010, 07:28:07 PM
I'm using PIC PGM tapos ang lumalabas, lagi ay PIC16f877a nadedetect niya ito, tapos hindi niya ito maprograman, Verify errors occured. Minsan naman "PIC Unknown" kahit hindi ko ito hinahawakan.

kanina, kahit anong codes nabuburn sa kanya, ngayon isa nlng na code. ayaw nya na tanggapin ang 4 pa na .hex files.

Edit: Yung simple flashing LED lang na .hex tinatanggap niya (paminsan minsan nag eerror), kung subukan naman sa breadboard hindi siya nailaw kahit anung paa.
I think its time you buy a reliable pic programmer.  
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Offline motion55

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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #8 on: October 23, 2010, 10:24:19 PM »
Baka hindi lang gumagana ang PIC programmer. Don't declare the PICs dead yet.
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Offline Kaizer03

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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #9 on: October 23, 2010, 10:34:14 PM »
Quote from: motion55 on October 23, 2010, 10:24:19 PM
Baka hindi lang gumagana ang PIC programmer. Don't declare the PICs dead yet.

yeah sir,, it seems so... nung first time ko gumamit ng PICpgm(im not so sure if it is software alone lang ang may problema) akala ko din sira yung PIC, good thing tinabi ko yung PIC.. then the last time na chineck ko sya using PICKit2... ok naman sya.. then test it out sa JDM + PICpgm... ok na ulet :D
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Offline carlsfootprints

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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #10 on: October 23, 2010, 11:06:34 PM »
Quote from: ┌[٠KaiZeR]٨[gigz09٠]┐ on October 23, 2010, 10:15:13 PM
i also experiencing that even now.. that's why im using the PICKit2 All the time...

Quote from: alyas on October 23, 2010, 10:17:58 PM
I think its time you buy a reliable pic programmer. 

i agree.. i think it's better to buy a good programmer kesa naman daming delay at problema ang inaabot sa paggawa.. or kahit manghirap n lng.. epickit2 of e-gizmo is good.. un na din gamit ko ngaun.. whereas nung jdm at winpic800 pa, nagkakaproblema din ako sa pagpoprogram..

naniniwala ako sa nabasa kong thread nun na "PIC microcontrollers are pretty tough"

 

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Offline lloydi12345

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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #11 on: October 24, 2010, 06:09:38 PM »
thanks guys sa mga reply, Nagkamali lang pala ako sa software, nagbibisyo pala talaga ang PICpgm sa Olimex na hardware, pero sa hardware ni kuya 7strings hindi masyado. Dati kasi solid PICPgm ako talaga. Akala ko kasi PICPgm lang ang compatible sa windows 7 at nagbibisyo ang ibang software kaya hindi ko na sinubukan. Ang nakasira sa unang 1st and 2nd PIC ko ay yung hardware na ginawa ko mula sa schematics ni kuya 7strings kasi hindi ko nalagyan ng connection yung (-) ng DC jack at (-) ng 7805, hindi ko akalain maglalabas ito ng 7v kahit na grounding lang ang problema, kaya natusta yung unang dalwang PIC. Although saludo talaga ako sa narecommend niya na schematic kasi yun ang nkatulong sakin sa pagtapos ng project ko nung 1st sem ko.

Gumawa ako ng Olimex kasi parang malayo sa overvoltage kasi walang external power supply kasabay nito ang pagbili ko ng 3rd and 4th PIC. Yung 2nd PIC nadedetect pa rin siya ng PICPgm pero confirmed na sira na talaga kasi kahit flashing LEDs lang hindi niya magawa. Yung 1st PIC hindi na talaga madetect. PICPgm ang unang ginamit ko na software (solid ako dito dati ~_~), nung una okay siya sa pagburn ko ng 3rd at 4th PIC, pero after ng mga 10 programmings, naglalabas na siya ng "PIC Unknown" for both PICs. Akala ko sira na ung 3rd at 4th PIC. Salamat kay Kaizer at natandaan ko na may iba pa palang software. Sinubukan ko ang WinPic at good thing gumana pa rin ang 3rd and 4th PIC ko. Gumamit ako ng WinPic dati kaya lang hindi niya nababasa saking hardware programmer na mula kay kuya 7strings. Hindi ko alam kung anu issue about this.

Although the problem or issue is so noobish, I think this will remind me or maybe others na beginner sa paggamit ng PIC na dapat laging mag-ingat and always bring with you multi-tester.

Points sa lahat na nagshare ng feedback. ~_~

OT: Mga magkano po pala yung pinakamurang PIC Programmer na available sa market?
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Offline carlsfootprints

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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #12 on: October 25, 2010, 08:03:39 PM »
may ePICPRO ung egizmo pero di ko alam ung price.. i think, kung kaya ng budget nyo, epickit2 na lang.. usb pa :)
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Offline purpledee

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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #13 on: November 01, 2010, 01:58:02 PM »
ask ko lang, ayos pa ba ang pic kapag device successfully verified sa icprog?
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Offline 0b00000111

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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #14 on: November 01, 2010, 02:35:32 PM »
^^ here is a video  i created para matest yung IC-prog at programmer

http://www.swfcabin.com/open/1288590591
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Offline purpledee

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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #15 on: November 01, 2010, 03:41:21 PM »
^^ done! :)
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Offline Pro-Engineer

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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #16 on: November 01, 2010, 04:16:38 PM »
Quote from: lloydi12345 on October 23, 2010, 07:06:10 PM
3 days na akong na delay sa experiment ko dahil sa pagkasira ng 3 ko na PIC16F877A, can you enumerate possible reasons kung bakit nasisira ito? Aside from over voltage? Isa na lang natitira sakin, ayoko na masira pa ito ulit. I'm using Olimex PIC programmer hardware and PicPGM as software.

one of the causes might be esd. ano po yung situation bago masira?
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Re: Possible reasons of the PIC16F877A being destroyed?
« Reply #16 on: November 01, 2010, 04:16:38 PM »
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