Randy,

Several years ago, I designed for my brother-in-law a controller that does =

basically what you have described for his pellet burning space heater stove.
I'll ask him if it is okay that I give it out.  If he says yes, I'll send =

you the source code.  You will have to modify it slightly to work with your =

particular setup, but it should save you a lot of time.  I wrote it for a
16F628
if I remember correctly because that is what I had on hand at the time.

Regards,

Jim

-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of
RANDY ABERNATHY
Sent: Saturday, January 09, 2010 11:25 AM
To: piclist@mit.edu
Subject: [PIC] Grill temperature controller (Forgot to put PIC in subject
line earlier)

Hello:
=A0
I am working on a project that requires temperature control in a wood pellet
fired BBQ grill.=A0 I would like to use the PIC16C72A chip.
=A0
The control will be doing at least the following:
=A0
1. Provide power to an "ignitor" for a set period of time to ignite the wook
pellets
2. Provide power to a small AC gearmotor to turn a feed auger to supply the
pellets to the firebox
3. Accept input from an RTD temperature sensor
4. Turn the auger motor on and off based on temperature and also, in some
modes, based upon timing controlled by a BCD switch.
5. Provide power to a small AC fan for air supply to the firebox.
=A0
This is a loose description but hopefully enough to let you know what I am
attempting.
=A0
Being one that doesn't believe in re-inventing the wheel, I was hoping
someone on the list might have done this or have some insight into it.=A0 By
the way, I use PicBasic Pro.

Randy Abernathy
CNC and Industrial Machinery =

service, repair, installation and =

design

4626 Old Stilesboro Rd NW
Acworth, GA 30101
Fax: 770-974-5295
Phone: 678-982-0235
E-mail: =

randyabernathy@bellsouth.net
-- =

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