This reflow oven controller was built to control a modified toaster oven for the purpose of doing reflow soldering of printed circuit boards. The controller was designed and built around an ESP32-DevKitC development board with ancillary electronics added to complete the controller. The schematic can be found in <files/hardware>.
The code for the controller was modified extensively from existing Arduino sketches for reflow oven controllers and is PID-algorithm based. The firmware ("sketch") can...