HUB75nano

Abstract

1. Introduction

This Arduino library can be used to drive a HUB75 protocol LED Panel up to 64x32 Pixels RGB (tested with 64x32 and 32x16). It can also drive HUB75E type panels (icnd2153, stp1612pw05, FM6124C or similar chips) in 128x64 pixel resolutions (tested only with that size, but it should work with smaller panels as well)

It can display colors up to 8 bit colors for a full screen, a 1 or 2 bit rgb image buffer (dynamic) or 4 bit rgb buffers (static). It was originally written for the Arduino Nano (It should also work with the Arduino Uno), but is now being ported to a number of other chips in the nano formfactor (or with similar architecture). Refer to the list below for the current state of support.

2. Objective

This Arduino library adds the basic functionality needed to drive a HUB 75 protocol LED Panel up to 64x32 Pixels RGB.

This project demonstrates how C, Arduino can be applied to a real-world Internet of Things (IoT) problem.

4. Technology Stack

5. System Requirements

General requirements for this technology stack — check the README for exact versions.

• Arduino IDE / PlatformIO or a C compiler (gcc)
• Target board where applicable
• Git (to clone the repository)

6. Installation & Setup

git clone https://github.com/CamelCaseName/HUB75nano.git
cd HUB75nano

Full setup instructions are in the project README.

7. Future Enhancements

Suggested extensions you can add to make this your own project.

• Add a mobile dashboard using Blynk or Firebase
• Store readings in a cloud database for history charts
• Add alerts via SMS / Telegram when thresholds are crossed

8. Viva / Review Questions

Common questions examiners ask for projects in this domain.

1. Which microcontroller / board and sensors are used and why?
2. How does the device send data (Wi-Fi, MQTT, HTTP, Bluetooth)?
3. Where is the sensor data stored and visualised?
4. How is power consumption managed?
5. How would you secure the device and its communication?

9. Source Code & License

This project is developed by CamelCaseName and published on GitHub under the GNU General Public License v3.0. Please follow the license terms and credit the original author when you use or modify this code.