Design of Intelligent Wireless Laser Engraving Machine

Abstract The wireless laser engraving machine system is designed by using the wireless data transmission and programming processing ability of MCU esp8266. The browser of computer accesses the micro web server built in MCU through wireless channel to realize real-time control of engraving. MCU establishes and maintains the Wi-Fi channel for computer connection. The computer browser downloads and runs the HTML5 Web APP stored in MCU flash memory to generate the operation interface. The APP completes the image loading, graying, binarization, thinning, vectorization and other processing. In the browser, the final G-codes are generated and sent back to MCU in real time. The MCU executes G-codes line by line. According to the intention of G-codes, MCU uses linear interpolation algorithm to control stepping motor and PWM to control laser intensity. Finally, the engraving or cutting is completed in a perfect way. The core hardware circuit requires only one MCU and two driver ICs. So the design is portable, easy to be assembled, precise to be controlled and low cost. And the open software architecture makes it more extensible, compatible and easy to be deployed.