Project Hub /Basic Analog & Power Electronics/Sequential, Timing & Pulse Circuits/Smart Library System

Intermediate

ESP32

₹1,500 – ₹5,000

3 – 6 Hours

Partial Kit

Smart Library System

A standalone Smart Library Kiosk built on the Adafruit Memento board with an ESP32-S3, providing a self-service system for book issuance, returns, inventory updates, and fine payments.

Originally published on CircuitDigest

View original tutorial

Parts You'll Need

This project is sourced from another site, not written by us — this list is our best match of their components against what we stock, not a verified bill of materials. Always check the original blog (linked above) for the actual parts list before buying.

ESP32 CAM WiFi Module Bluetooth with OV2640 Camera Rs. 810.00
2-Slot 18650 Holder with Protective Cover and On/Off Switch – Case Rs. 109.00
1200mAh 18650 Li-ion Bat – Reliable 3.7V Power Cell Rs. 129.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

We don't carry yet: Other Dev Board (Indusboard / Maixduino / misc)
TFT / Touch LCD
Port Expander / I2C Mux (MCP23017 / PCF8574)

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How It Works

The Smart Library System operates as a standalone, self-service kiosk centered around the Adafruit Memento Development Board powered by an ESP32-S3 microcontroller. When a user interacts with the system, navigation buttons wired through the AW9523 I2C expander allow them to scroll through options displayed directly on the board's built-in TFT display. To handle tasks like book issuance or returns, the built-in ESP32 camera captures visual data, which is then processed using the qrio library to read optical codes such as miniQR graphics generated via adafruit_miniqr. The system coordinates these inputs and outputs using CircuitPython 9.x, updating local logic or communicating status changes on the screen with the help of adafruit_display_text. For portable or untethered operation, an optional 3.7V LiPo battery supplies power to the board, making the kiosk fully functional away from a fixed desktop power source.

Why Build This

Design and deploy an embedded self-service kiosk suitable for school or college resource management.

Integrate optical camera capture and QR decoding algorithms for automated asset tracking.

Implement I2C port expansion and graphical user interface elements using CircuitPython.

Real-World Application

Self-service library counters, school and college resource management kiosks, and automated inventory tracking systems.

Skills You'll Learn

I2C communication

camera-based optical code scanning

TFT graphical user interface design

peripheral button expansion

battery power management

Safety Precautions

No specific precautions noted for this build — always follow general electronics safety practices.

Technology Tags

CIRCUITPYTHON

ESP32-S3

TFT DISPLAY

QR CODE

AW9523

I2C

CAMERA

Frequently Asked Questions

Can I run this project without the optional LiPo battery?

Yes, the board can be powered directly via USB while you develop and test the system.

How does the system read codes without a dedicated external scanner?

It utilizes the built-in ESP32 camera paired with the qrio software library to optically capture and decode QR codes.

What programming language is required for the software setup?

The project is built using CircuitPython 9.x along with specific helper libraries for the display, IO expansion, and camera.

Gallery

This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.

Kitkraft Project Hub — curated from the maker community, credited at the source.

PRJ-01323