Reflow-Controller: An ESP32-Based Universal Reflow Oven Controller
Once an oven is fully assembled with the Reflow-Controller, it can be used to program the reflow process via 3 buttons and an OLED screen.
Built to control various types of reflow ovens, hotplates, and more, the Reflow-Controller built by makermoekoe features an ESP32-S2 MCU, making it compatible with apps, or it can be used as a standalone device thanks to an onboard OLED display and three buttons. Assembly and tests of the Reflow-Controller can be seen on makermoekoe’s YouTube channel, where the device is assembled on a prototyping PCB from PCBWay.
The upper portion can be used as a power supply for the whole board as well as the higher voltage outputs such as fans, and can be separated if unnecessary. The main board is equipped with an LM1117 3.3V voltage regulator, which can be fed with a max of 15V. The entire PCB can be mounted so the buttons and OLED are visible, and files for a 3D-printed case are also available on GitHub.
Full PCB features are listed as well, and include thermocouple sensor inputs, fan outputs, solid state relay outputs, a buzzer, and servo outputs. The board can also be powered via USB-C, but this will not power the outputs. Once fully assembled, the controller can be used program temperatures and monitor progress.
The GitHub repo for the project is a work in progress, so more details may be to come, including additional devices the controller could be useful for.