ESP32 Axidraw PCB & Firmware
Employer not named by the sourceRemote
Frontier is not the employer and does not collect applications.
About this role
Python, Electronics, Microcontroller, PCB Layout, Arduino, Embedded Systems, Motor Control, Firmware Development · I need a complete electronics solution that can replace the original EBB board on an Axidraw-style writing machine. The job covers both hardware and software.
Hardware scope • Design a compact, two-axis motor-control PCB built around an ESP32. • Integrate two stepper-motor drivers capable of smooth, quiet motion at plotting speeds. • Provide a reliable USB interface for host control and firmware updates. • Include all required power-management, end-stop, and pen-lifter circuitry so the board can drop straight into an existing Axidraw frame. • Deliver production-ready assets: schematic (PDF & source), PCB layout, Gerber/Drill files, BOM with part numbers, and a brief assembly guide.
Firmware scope • Develop firmware that exposes Axidraw-compatible commands over USB—ideally mimicking the original EBB protocol so it works out of the box with Inkscape and existing plotter scripts. • Implement acceleration profiles, homing routines, and pen-up/pen-down sequencing. • Provide source code (PlatformIO / Arduino-ESP32 or ESP-IDF), well-commented, with build instructions. • Include a simple desktop test utility or example Python script that sends a demo plot to verify oper