ReflowOven

ReflowOven [[Image:{{{picture}}}|200px]] What: Reflow oven Tagline: Reflow your PCBs Maintainer(s): Seb Archived:

Project ReflowOven

Goal:

Reflow you surface mounted PCB.

Goals:

• fully automatic
• easy to build
• cheap
• fully documented
• open source

Why:

It's nice to solder automatically PCB's.

This project will go through 3 phases:

Phase 1: Design and make a working prototype

Design the control circuit that works. Attach it to the oven. Try basic control.

Phase 2: Optimize the design

Update the control loop and see how it's matching the reflow curve.

Phase 3: Make and publish instructions

Completely document the full hardware and software. Write building instructions and a users manual. Make videos demonstrating the building and the operation of the oven. Publish everything and promote it.

Oven

Found at tbe flea market (2kW).

Control Part

We'll be using an Arduino-like controller to control the power electronics.

• The controller shall read the oven temperature from a thermocouple.
• Relays shall protect the mains input.
• Heating power provided to the resistors shall be controlled by triacs.
• The controller shall follow typical reflow curves and follow them accurately.
• Reflow curves parameters shall be configurable.

external links

• https://www.ee.washington.edu/techsite/papers/documents/UWEETR-2006-0010.pdf
• http://www.bristolwatch.com/ele/triacs2.htm
• http://www.ladyada.net/learn/sensors/thermocouple.html
• http://www.azom.com/article.aspx?ArticleID=1208
• http://www.rocketnumbernine.com/2009/06/03/smt-table-top-reflow-oven-part-1
• http://www.about-thermocouples.com