Reflow Oven Controller

What we have here is a fairly capable reflow oven controller. It allows you to take an ordinary toaster oven and convert it into a reflow oven for all your SMD soldering needs.

Here are the features:

  • Open source, open hardware project
  • Microcontroller controlled (MSP430)
  • Solid state switching AC via a triac
  • LCD (supports Hitachi and Nokia) display
  • Supports two thermistors for temperature measurement
  • Industry standard soldering profiles
  • Profiles can be edited and stored in microcontroller flash
  • Supports exhaust fan control
  • Built-in input and output test functions for easy testing

Here are a few images of an assembled controller board. The triac will eventually be mounted on a heatsink.

I made a video on this controller which explains many things in detail.

Some images of the LCD screens. The controller supports a 2 line, 16 or 20 character Hitachi text LCD, or a Nokia 5110 graphical display. The images here show the controller with the Nokia display.

This project is currently available as an open-source / open-hardware project. Here’s the list of files that you will need to put it together:

  • Schematics
  • Gerber files
  • Source code