---- START NEW MESSAGE --- Received: from cherry.ease.lsoft.com [209.119.0.109] by dpmail10.doteasy.com with ESMTP (SMTPD32-8.05) id A75018D10202; Fri, 30 Jan 2004 04:00:16 -0800 Received: from PEAR.EASE.LSOFT.COM (209.119.0.19) by cherry.ease.lsoft.com (LSMTP for Digital Unix v1.1b) with SMTP id <4.00CC4A12@cherry.ease.lsoft.com>; Fri, 30 Jan 2004 7:00:03 -0500 Received: from MITVMA.MIT.EDU by MITVMA.MIT.EDU (LISTSERV-TCP/IP release 1.8e) with spool id 6888 for PICLIST@MITVMA.MIT.EDU; Fri, 30 Jan 2004 06:59:56 -0500 Received: from MITVMA (NJE origin SMTP@MITVMA) by MITVMA.MIT.EDU (LMail V1.2d/1.8d) with BSMTP id 6033; Fri, 30 Jan 2004 06:58:55 -0500 Received: from host30.websitesource.com [209.239.37.58] by mitvma.mit.edu (IBM VM SMTP Level 430) via TCP with ESMTP ; Fri, 30 Jan 2004 06:58:55 EST X-Comment: mitvma.mit.edu: Mail was sent by host30.websitesource.com Received: from roo ([165.143.244.183]) by host30.websitesource.com (8.12.10/8.12.10) with ESMTP id i0UBwfJx032570 for ; Fri, 30 Jan 2004 06:58:54 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Message-ID: <000301c3e728$6c682ae0$b7f48fa5@roo> Date: Fri, 30 Jan 2004 13:58:37 +0200 Reply-To: pic microcontroller discussion list Sender: pic microcontroller discussion list From: Andre Miller Subject: Re: [PIC:] Programming Interface To: PICLIST@MITVMA.MIT.EDU In-Reply-To: <018801c3e725$a06cd8c0$3822a250@webspeed.dk> Precedence: list X-RCPT-TO: Status: U X-UIDL: 371856478 Hi, I forgot to add that the 16F877 has the ability to program itself. Once = you have a cheap programmer built, you can program it with a loader, and = that loader can then be used to program the chip via a normal serial = interface. ------------- Hi, I'm also quite new to this group, but have managed to build a simple interface that uses the serial port and supply the +13V for non-LVP = without an external supply. The hardware I used was the JDM programmer: http://www.jdm.homepage.dk/newpic.htm There are also variatons on this design, the one I built was: http://www.olimex.com/dev/pic-pg2b.html Software, I first used PonyProg, but had lots of problems, finally = figured out (with the help of others here), that it didn't program code bigger = than about 1024. I then switched to ICProg, which worked perfectly (after fiddling with it to get it working on Windows XP). ICProg: http://www.ic-prog.com/ PonyProg: http://www.lancos.com/prog.html Having said all that, the JDM programmer is very basic, getting the = required +5V and +13V from the serial port, using the negative line as ground. If you're going to do in-circuit programming with another powersource = that=92s grounded, it won't work. I mainly built JDM to get a cheap (and easy to build) programmer to = build the Wisp628 programmer, which uses a PIC and I needed to get the = firmware on that pic. This programmer is much more versatile. Its designed by Wouter = van Ooijen who also frequents this list and can be found at: http://www.voti.nl/wisp628/ You can also order the kit or programmed PIC from him. _____ =20 Andr=E9 Miller =09 -----Original Message----- From: pic microcontroller discussion list = [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Vidal Sent: 30 January 2004 01:39 PM To: PICLIST@MITVMA.MIT.EDU Subject: [PIC:] Sorry, I realise I forgot [PIC:] :-( Hi. I am all new to this group (and new to PIC, too) so I don't quite know = if this the right place to ask. My question is: The 16F877(A) can be programmed with 5 V as far as I can see. Can anyone point me in the direction of a (cheap) DIY programming device, preferably for the serial port? And perhaps also software to do it with. I have seen readymade interfaces that cost more than 100$, and it seems pretty expensive. Regards Vidal -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body .