how-to-vend-almost-anything

Operate, deploy, configure, and modify the open-source XIAO / Wio Terminal vending machine in xiao-vending-machine-full-code-system. The system is a CSV-backed Node.js backend (the "brain", normally on a PC) plus two Wio Terminal firmwares: a frontend reader that dispenses and a backend RFID writer that encodes cards. Use when running or hosting the backend (local PC, Render, Codespaces, or USB-writer mode), flashing/configuring the Wio Terminals (WiFi, backend URL, device keys), choosing a deployment topology (MCU-only offline, PC-on-LAN, cloud, or one-box USB writer), adding/removing products or changing prices/servo mapping/stock/capacity, recalibrating servos, debugging the card verify / checkout / dispense flow, sourcing parts and assembling the hardware, or adapting the mechanical design to vend a different product.