Piecing together a temperature-controlled heating plate/heating table

First, go to Jiali Chuang to make an aluminum-based hot plate.

             ESP32 heating table - This is the hot plate used by Lichuang EDA open source hardware platform (oshwhub.com) and is used for direct proofing.

Find a few small modules. A K-type couple temperature sensor module (MAX6675) costs about ten yuan, which is really expensive. . . , a MOS tube module costs a few cents per dollar; some treasures have it

As for why I don’t draw pictures and make the board, it feels too troublesome and unnecessary. Hehe, then connect the lines according to the module and assemble it with simple operations.

Then I randomly found a single-chip microcomputer development board. I used Arduino Nano here. As for the development board I used, I used whatever I had. By the way, I complained that the chip was really expensive.

Write a few lines of patchwork program, plug in the development board, the program here is very simple, turn off the heating when the temperature is reached, and raise the temperature when it is not reached. As for why not use PiD, adjusting parameters is too annoying, and the amount of code is not small. Originally, this thing simply controlled the temperature, and a few degrees difference would have no effect;

Because I couldn't find the display module and couldn't always use the serial port assistant to control it, I took advantage of the situation and wrote a software. It was written in WinForm. The code was pieced together. There must be bugs. It is normal for it to crash or throw an exception whenever it is used. Too lazy to change, haha;