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Old 22nd September 2004, 04:59 AM   #1
Default pic16f84 programmer schematic needed!

hello mates...im looking for a pic16f84 programmer schematic. pic16f84 ic only that is connected to serial port....plz help me......
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Old 22nd September 2004, 06:22 AM   #2
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hello amp ,
check out nigel's site i'm sure he has a few on there.
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Old 22nd September 2004, 06:40 AM   #3
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Quote:
Originally Posted by williB
hello amp ,
check out nigel's site i'm sure he has a few on there.
I only have parallel port programmers, I don't consider serial port ones reliable enough.

What I would say, if you only have a serial port (so can't use a parallel port programmer) go for a more expensive one - a 'proper' serial port programmer that has a processor on board. These work fine, but obviously cost more - the cheap 'serial' port programmers don't actually use the serial port at all, just some of it's handshake lines, they usually rely on the handshake lines been above RS232 specification, so only work on some computers.
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Old 22nd September 2004, 07:54 AM   #4
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Good serial programmer:
http://www.qsl.net/dl4yhf/winpicpr.html
Hardware that works also with low level com signals from new computers and laptops:http://www.qsl.net/dl4yhf/winpic/index.htm#eprom_prog
This hardware working also with NTPicprog on win2k and pic16f628.
NT picprog is the best com programmer for 16f84 and 628.
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Old 23rd September 2004, 02:07 AM   #5
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try look at this site...

http://www.semis.demon.co.uk/uJDM/uJDMmain.htm
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Old 28th September 2004, 12:05 PM   #6
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Quote:
Originally Posted by alamy
mate...have you tryd building that project?is that 100% running?
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Old 28th September 2004, 01:28 PM   #7
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Quote:
Originally Posted by AMPdeck
Quote:
Originally Posted by alamy
mate...have you tryd building that project?is that 100% running?
It's a JDM programmer, they don't do 100% - it's entirely dependent on your particular computer's serial port being above the RS232 standard - if it isn't, it won't work!.

But it's very simple and cheap to build, give it a try and see if it works on yours? - although if you have a laptop I wouldn't bother!.
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Old 28th September 2004, 07:44 PM   #8
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AMPdeck
I have built this programmer and I can only say for myself that it is working for me 100% on my desktop. I have not had any problems with it. I built it approx a year ago and it is still running fine. As Nigel stated I wouldn't try it with a laptop. RS232 voltages are low on the laptops.

Just ensure that your voltages are high enough on the desktop to use it.
I think you need at least 13 V (+ and -) to run it.
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Old 2nd October 2004, 05:08 AM   #9
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Quote:
Originally Posted by Beefer3
AMPdeck
I have built this programmer and I can only say for myself that it is working for me 100% on my desktop. I have not had any problems with it. I built it approx a year ago and it is still running fine. As Nigel stated I wouldn't try it with a laptop. RS232 voltages are low on the laptops.

Just ensure that your voltages are high enough on the desktop to use it.
I think you need at least 13 V (+ and -) to run it.
oh yeah...at last i have now a serial pic16f84 programmer that is running 101%....many tnx, beefer3.......ur da best....
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Old 2nd October 2004, 11:50 AM   #10
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HELOO all............. the programmer for PIC16F84 is that can be also use for PIC16F84A>??????
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Old 2nd October 2004, 12:24 PM   #11
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Quote:
Originally Posted by Gundam82
HELOO all............. the programmer for PIC16F84 is that can be also use for PIC16F84A>??????
Yes, but beware,the JDM does NOT work on all PC's.I have built one and it works fine on my PC at work,"BUT" I have also built the OziPic'er on Nigel's site and to be VERY honest I prefer the OziPic'er.
At the end of the day,at a "LITTLE" extra cost you would be much better off.

Good Luck
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Old 4th October 2004, 08:10 AM   #12
Default uJDM Programmer

I was use the programmer but it won't work...
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Old 4th October 2004, 06:50 PM   #13
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do a google search for picblaster or umm something like that maybe theres a space in there. i was looking for one a while back before i got my good one and it was a programmer only for the 1684s. not much too it at all. it can be built from scraps youd probably have lying around. if not go to radio shack they have everything for it.
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Old 9th October 2004, 03:13 AM   #14
Default Re: uJDM Programmer

Quote:
Originally Posted by amady
I was use the programmer but it won't work...
I was try RCD Programmer and it work now with my ICPROG...

http://osaka.cool.ne.jp/feng3/en/rcd.html

and i also built this multichip programmer and also it work!

http://www.talkingelectronics.com/Pr...-01-Intro.html

Both programmer work on serial port... but make sure your serial port is enabled in bios setup...
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Old 14th October 2009, 06:17 AM   #15
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hi guys!, my desktop does not have serial port on my motherboard, im looking for any pic programmer that will run using usb to rs232 cable do any one among you have try this one and make it run?, can you give me the schematic? TIA!..
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