This PCB is the Slave Controller Board (v1.1) designed for an automated retail product dispensing kiosk system. It is part of a master-slave architecture where this board receives commands from a Master Controller via RS-485 communication protocol.

The slave board is responsible for directly driving and controlling NEMA 17 stepper motors used in the product dispensing mechanism. Each slave unit manages multiple motor outputs, allowing modular expansion of the dispensing system.

Key features of this board include:

- RS-485 communication interface for robust long-distance data transmission

- Stepper motor driver outputs for NEMA 17 motors

- Onboard power regulation and signal conditioning

- Compact design optimized for modular deployment inside the kiosk enclosure

This board was designed as part of a larger warehouse-style automation project aimed at the retail and e-commerce logistics market. The system is inspired by automated kiosk and dispensing platforms, integrating bill and coin recycling capabilities for cashless and cash transactions.

Designed using KiCad. Gerber files are provided for direct PCB fabrication.