Implement Roulette (sdk)

Kiosk Software – Simple Roulette + QR Code Generation (SDK Integration)

Description:
I have a vending machine with a touchscreen and a working SDK provided by the manufacturer.

The machine is already fully functional. I DO NOT need to build a system from scratch.
I only need to ADD a new feature to the existing interface.

Objective:

Add a new option/button on the screen that:
1. Opens a simple roulette (spin wheel UI)
2. User spins the wheel
3. Based on the result, the system generates and displays a QR code on the screen

Important:
• No need for backend (for now)
• QR codes can be predefined or generated locally
• No need to dispense physical products in this feature
• This is a kiosk/touchscreen interface

Requirements:
• Experience with kiosk software / embedded systems / Android (if applicable)
• Ability to work with external SDK
• Clean and simple UI (nothing complex)

Deliverables:
• Working roulette interface
• QR generation based on result
• Integration with existing system using SDK

Bonus (optional):
• Ability to modify rewards easily in the future