Let's Make Robots!

reflow oven

Set A Temperature For an Oven Using a Relay
This is my Arduino temperature-ramp PID controller, which is running on a hot plate (up to 325 C) and which shall also be tested on a furnace (up to 650 C).  This … Read more

Reflow Oven Fan Modified == Good PID loop \0/

16 May 2011

Today I made a slight modification to the toaster oven to see if I can improve the PID loop response.  I was having issues with oscillations no matter how much I adjusted the PID gains.  I suspected this was because I turned the oven on/off in response to the PID output.  This meant the internal oven fan pulled the temperature down below the setpoint a bit every time the oven was turned back on again.  Another side affect is the temperature would overshoot the setpoint a bit once the PID attempted to compensate for the undershoot.

Reflow Controller Software Demo 1

23 April 2011

Uploaded video of the calibration routine used to adjust for overshoot.

22 April 2011