Inspired by a MIG welder YouTube video, I built the following stepper motor controlled paint pen marker. Could also be used a Sharpy marker instead.
![](https://jimk3038.com/wp-content/uploads/2020/08/Heltec-ESP32-1024x916.jpg)
Here is the board design at OSH Park:
https://oshpark.com/shared_projects/MFHba3kD
![](https://jimk3038.com/wp-content/uploads/2020/08/Pen_Marker_Top-1024x740.png)
![](https://jimk3038.com/wp-content/uploads/2020/08/Pen_Marker_Back-1024x740.png)
Inspired by a MIG welder YouTube video, I built the following stepper motor controlled paint pen marker. Could also be used a Sharpy marker instead.
Here is the board design at OSH Park:
https://oshpark.com/shared_projects/MFHba3kD