Raspberry Pi Developer for Smart Vending System (UI + QR Payment + Lock Control)
Budget: ₹750 – ₹1,250 INR
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.
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.