Smart Doorbell Camera Kit – Raspberry Pi 5 Document Scanner with PaddleOCR and On-Device LLM Queries

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Every year thousands of invoices, GST challans, and student forms pile up needing structured data entry. This kit turns a Raspberry Pi 5 and a Pi Camera into a doorbell-style document station: place any printed form or invoice under the desk lamp, capture a sharp image, let PaddleOCR extract all text, and then query it instantly using a local large language model. No cloud, no recurring fees — all processing happens right on the Pi’s NVMe SSD, keeping your data private.

What You’ll Build

You’ll assemble a full edge AI system: a Pi 5 with a high-speed NVMe SSD over the M.2 HAT, a Pi Camera Module 3 for crisp document shots, and a desk lamp for consistent lighting. Software-wise, you’ll deploy PaddleOCR to pull text from scanned forms and invoices, then integrate a small LLM like Llama 3.2 1B or Phi-3 to answer natural language queries. By the end, you can place an invoice on your desk, click capture, and ask “What’s the vendor’s name and total amount?” — the system replies immediately.

What You’ll Learn

• Mounting and configuring an NVMe SSD on a Raspberry Pi 5 using the M.2 HAT+
• Capturing high-resolution document images with the Pi Camera Module 3 under controlled lighting
• Deploying PaddleOCR to recognize printed text from invoices, forms, and receipts
• Running a local LLM on the Pi 5 for on-device question-answering over extracted text

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This intermediate kit is ideal for B.Tech ECE/EEE students building edge AI projects, CBSE Class 12 students with the AI elective, and Smart India Hackathon teams tackling document digitization challenges. IIT, NIT, and BITS Hyderabad engineering minors that require a fully offline, deployable OCR + LLM solution will find it fits perfectly into a semester project or internship demonstration.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We’ve spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.