Controleo3 is a closed-loop oven controller, reading the oven temperature using a thermocouple and modulating power to relays to achieve the desired temperature curve or profile. The operation is guided by "profiles" (see https://whizoo.com/profiles) which are easy to write, flexible and powerful. While Controleo3 is primarily a reflow oven controller, it can be used for any oven like kilns or curing ovens.

Reflow oven build guide:
https://www.whizoo.com/reflowoven

Buying Controleo3:
https://www.whizoo.com/buy

Updating the firmware running on Controleo3:
https://www.whizoo.com/update

This software has been released under the MIT license. You are free To use it any way you wish.

In this folder are:

1. README - this file
2. Files that comprise the Controleo3 library for Arduino
3. An "examples” folder containing the Reflow Wizard software

To install the Controleo3 library, please refer to:
http://arduino.cc/en/Guide/Libraries or http://www.whizoo.com/update

• 1.0 Initial public release. (21 August 2017)
• 1.1 Bug fixes and features (9 September 2017)
  • Fixed bug where servo movement would be erratic
  • Fixed bug where running learning twice could cause the oven to overheat
  • Added message when SD card wasn't FAT formatted
  • Profile commands: added "beep" and ability to specify just how much the oven door should open
• 1.2 Tweaks for ovens with slow-response heating elements (1 November 2017)
  • More responsiveness for all ovens, especially those with slow-response heating elements
  • Minor oven scoring change to better reflect reality
  • Number of reflows is now incremented as expected (Settings -> Stats)
• 1.3 Added new profile command "maintain" (15 November 2017)
  • The oven can now hold a specific temperature for a certain duration
  • See https://www.whizoo.com/profiles for more information
• 1.4 Minor improvement (18 December 2017)
  • When switching between non-FAT and FAT16/FAT32 formatted cards, a reboot was needed. This has been fixed.
  • Added comments and fixed spelling mistakes in the source code
• 1.5 Major update (15 October 2019)
  • Added graphing to the reflow screen, controlled by new profile commands "show graph" and "start plotting"
  • Added option to log the time and temperature to the SD card
  • Improved, more consistent learning sequence that takes 25 minutes instead of 1 hour
  • Added ability to manually tune PID
  • Better support for other oven types, like kilns or curing ovens
  • Added support for single-element ovens
  • Improved "max deviation" logic, and more information is provided when it occurs
  • New "user taps screen" profile command
  • Changed licensing to less restrictive MIT license. You can use the source code as you wish

Peter Easton

whizoo.com