Automatic Cigarette Rolling Machine Development

Designed and delivered a complete embedded control system for a fully automated preroll manufacturing machine, autonomously handling the entire production cycle from material crushing and mixing through to final rolling.

Built around an ATmega2560 MCU, the firmware concurrently orchestrates 20 stepper motors, 4 oscillators, and a vacuum motor within a tightly sequenced control loop with RTOS, each responsible for a distinct stage of the production pipeline. Achieving reliable simultaneous control across this many actuators demanded careful interrupt management, precise timing architecture, and efficient resource allocation within the firmware. Full-circuit simulation in Proteus was completed before any hardware was manufactured, catching timing conflicts and component sizing issues early.

Component selection was backed by proper electrical calculations, and a comprehensive documentation package, including full wiring diagrams and component specifications, was delivered alongside the hardware for client-side maintenance and future scaling.