Hi, I am building a small MVP for a smart vending system for selling packaged items. I’m looking for a freelancer to help develop a simple and reliable system integrating touchscreen UI, QR payment, and hardware control. Project Overview: The system will include: Raspberry Pi with touchscreen Product selection interface QR code payment (Stripe or similar) Door unlock mechanism after successful payment LED indication for selected item Basic sensor feedback (optional in first stage) Required Features: Touchscreen UI Display list of products Allow selection (1 or multiple items) Show price and generate QR code Payment Integration Generate QR code (Stripe payment link or similar) Detect successful payment (via webhook or API) Hardware Control Trigger relay to unlock fridge door Control LEDs to indicate selected item Optional: basic buzzer alert System Flow Select item → scan QR → payment confirmed → unlock door Simple and reliable logic Hardware: Raspberry Pi Relay module Electromagnetic or solenoid lock LED indicators IR sensors (optional phase 2) Goal: This is an MVP project. Focus is on: simplicity reliability clean user flow Deliverables: Working software on Raspberry Pi Source code (well structured) Setup instructions Remote support during installation Remote Work: Development can be done remotely I will handle hardware assembly locally Please include in your proposal: Similar projects (if any) Technologies you will use Estimated timeline Any suggestions to simplify/improve the system To confirm you’ve read this description fully, please start your proposal with the word “Wagga” and briefly explain how you would ensure the door unlocks only after confirmed payment. Proposals without this will not be considered.