I need a compact vending machine that can brew and dispense both tea and coffee on demand, and unlock each pour only after a successful UPI payment. The core of the job is a working prototype—hardware, firmware, and payment gateway tie-in—so I can place the unit in an office lobby for live testing. Key UPI features I must see working: • Real-time transaction confirmation on the machine’s screen • Support for multiple UPI providers (GPay, PhonePe, Paytm, etc.) without extra setup for the customer • A locally stored transaction history that I can export for reconciliation You’re free to choose components and programming language, but the end result must dispense consistent 150 ml servings of tea or coffee within 45 seconds of payment. I will handle consumables; you handle everything from pump control to QR code generation. Send a short note outlining similar automation or fintech projects you’ve delivered so I can gauge your experience. Once we agree on milestones, I’ll share branding assets and beverage recipes. this is just the part of the project. More information will shared once we find the right candidate