The Challenge
Public environments at scale — markets, public transport hubs, government institutions, schools — face structural challenges in distributing essential products consistently.
Manual systems lack visibility into stock levels, fail without notice, and require physical audits. Authorities promoting sustainability initiatives needed a system that could distribute eco-friendly alternatives reliably while providing real-time data on usage, faults, and operational performance.
The Solution
A unified IoT vending ecosystem built on a single hardware and software architecture, with multiple product variants: Cloth Bag Vending Machines, Compostable Carry Bag Vending Machines, and Sanitary Pad Vending Machines with built-in incineration.
Every unit is built around a custom-designed PCB integrating an ESP32 controller, 2G/4G connectivity, motor drivers for the dispensing mechanism, sensor inputs for stock and fault detection, and UPI/QR payment integration. All units sync to a centralized cloud dashboard via MQTT for real-time monitoring.
System Architecture
- Custom PCB with ESP32 processor and GSM/4G module (in-house design)
- Sensor-based dispensing and stock-level detection
- Motor control for product release mechanism
- UPI/QR payment interface
- MQTT-based cloud sync for real-time telemetry
- Centralized web dashboard for fleet monitoring
- OTA firmware update capability
Key Capabilities
- Real-time monitoring of every deployed unit
- Usage analytics and reporting per location
- Fault detection and remote diagnostics
- UPI / digital payment integration
- Modular architecture for multiple product types
- Solar-power-ready variant for off-grid locations
Impact
- 500+ units deployed across multiple states
- 10 lakh+ sustainable bags distributed, replacing single-use plastic
- 50,000+ girls in schools and public institutions accessed hygiene products
- Estimated 30+ tons CO₂ emissions avoided through plastic substitution
- Centralized fleet visibility — no manual physical audits required
Deployments
Tech Stack
[Client testimonial — secure from WB PCB or Merlin contact]
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