Introduce：

The MidTBot is a small and simple little pen plotter. All of the custom parts are 3D printed. The rest of the parts are low cost and easy to get.The controller uses an ESP32 running Grbl_ESP32 firmware. It can be controlled via USB, Bluetooth or Wifi. You can simply upload gcode files to the unboard SD card and print.The machine is controlled by a unique H-bot configuration, that uses a single belt. Two small stepper motors drive that belt in a special way to move in the X/Y plane. The pen is lifted by a hobby servo using a very simple and accurate mechanism.Here is a link to a video of the plotter in action.The project is open source，We have collected all the components and compiled them into a collection for sale to everyone. However, the sales of the components, software, and copyright belong to the original authors. Thank you again for the contribution of the open source developers!

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