I'm not quite sure where you exactly need help but I'll make a few recommendations as to how I would go about it. First, I would choose the 16F628 PIC, it has an intenal RC OSC which saves some complexity and is programmer pin compatible with the 16F84. For temperature sensing I would use the National Semiconductor LM75 (or a relative of it if you need more accuracy), they are digital I2C temperature sensors that are very easy to work with (don't need to worry about an ADC). There is tons of bit banged I2C PIC code out there for you to use, although writing it yourself would be pretty trivial. As for controlling the heater can I assume it is a 115V or 230V AC resistive heater? If so then I would suggest an optoisolator and triac to control it, they should be the easiest to work with. The rest is all software which is mostly trivial. If you have trouble on that front let us know. Thanks, TTYL > -----Original Message----- > From: pic microcontroller discussion list > [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Coco Caracola > Sent: Monday, April 15, 2002 11:57 > To: PICLIST@MITVMA.MIT.EDU > Subject: Re: [PIC]:How do I control Temperature using a PIC ? > > > Hi !!! > Between 20 and 50 : C .... > Wait for your answer ... :) > Bye. > > -----Mensaje original----- > De: pic microcontroller discussion list > [mailto:PICLIST@MITVMA.MIT.EDU]En nombre de samo benedihih > Enviado el: Lunes, 15 de Abril de 2002 12:41 > Para: PICLIST@MITVMA.MIT.EDU > Asunto: Re: [PIC]:How do I control Temperature using a PIC ? > > > Hi! > > What temperature range are you talking about? Regards, Samo > > -----Original Message----- > From: pic microcontroller discussion list > [mailto:PICLIST@MITVMA.MIT.EDU]On > Behalf Of Coco Caracola > Sent: Monday, April 15, 2002 5:15 PM > To: PICLIST@MITVMA.MIT.EDU > Subject: [PIC]:How do I control Temperature using a PIC ? > > > Hi: I4m working in my final thesis about a temperature process > control. The > point is that I need help about controlling a resistance based > heater using > a PIC to get an oven heated from one temperature to another..... > Can anybody > help me ? > > Cuanto mas se sabe, menos se asegura. > > Carlos E. Mangiarotti > > Departamento Ticnico > > Ciudad Internet Suc. Rosario > > Tel: 0341-4243770 > > > > -- > 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 > > -- > 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