Hi, Yes, I can release the documentation including the circuit, pcb layout and source code. I'll need to find all of the documentation etc. I'll also need somewhere to upload it to. Cheers, Peter Homann mailto:Peter.Homann@adacel.com Adacel Technologies Limited, 250 Bay St, BRIGHTON, 3186, AUSTRALIA http://www.adacel.com Telephone +61 (3) 8530 7777, Facsimile +61 (3) 9596 2960 Mobile 0421-601 665 -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of David Harris Sent: Monday, 18 November 2002 12:48 PM To: PICLIST@MITVMA.MIT.EDU Subject: Re: [EE]My PIC controlled SMT Reflow oven was RE:[EE] Hot airsoldering = cheap was Re: [EE]: Printer to PCB? Hey yeah! This helps -- can you publish the schematic and code -- is it for public consumption? David Peter Homann wrote: > Hi, > > My entry to the 1998 Circuit Cellar contest was exactly this. I used a De > Longi toaster oven as it is fan-forced. This is important to help keep an > even temperature in the oven. > > It used a Platinum resistive temp sensor and a PIC16F84, along with a > 2x8LCD, rotary encoder, 2 push buttons, 2 relays, piezo buzzer and an rs232 > interface. Quite a lot of I/O for an 18 pin micro. The software was written > in CCS C and I ended up with about 6 words of memory left after a couple of > code optimising rewrites. It got a mention in the magazine but did not win > :-( > > Basically it worked like this. > > 1. The board was put in the oven > 2. The Start/Stop button was pressed. (The heater and fan turned on. The LCD > displays the current temperature) > 3. When the temp reaches the "Hi" set point (218 degs C) the Heater turns > off and the fan stays on to help cool the oven. (also the oven door is > opened at this point. > 4. When the temp reaches the "Lo" set point (50 Degs C), the fan turns off. > 5. Take the board out and start again. > > The relays were to control the heating element and the fan. The rotary > encoder was for entering the Hi and Lo set points. > > If a "D" character is sent over the RS232 I/F, the oven will reply with the > current temp. > > Eventually I plan to replace the 84 with a 628 with twice the code space. > That way I can add to the RS232 command and have it controlled by a computer > or another PIC. The idea is to control the oven to get a proper SMT temp > profile. > > I hope this helps, > > Peter Homann > mailto:Peter.Homann@adacel.com > Adacel Technologies Limited, > 250 Bay St, BRIGHTON, 3186, AUSTRALIA > http://www.adacel.com > Telephone +61 (3) 8530 7777, Facsimile +61 (3) 9596 2960 > Mobile 0421-601 665 -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads