How does ESP-DASH compare to Blynk for IoT dashboards?

ESP-DASH is designed for local, on-device dashboards without internet, keeping data private, while Blynk is cloud-based with easier remote access. ESP-DASH is better for offline control, but Blynk offers more pre-built integrations.

How to install ESP-DASH with Arduino IDE?

You can install it via the Arduino Library Manager by searching for 'ESP-DASH' or manually add it to your libraries folder. Ensure your board (like ESP32) is supported and configured correctly in the IDE.

Can ESP-DASH work without an internet connection?

Yes, ESP-DASH is built for local access via the device's IP address, so it doesn't require internet. All data is stored on-device, making it ideal for private networks or offline projects.

Is ESP-DASH free for commercial projects?

The open-source version uses GPLv3, which has restrictive terms for commercial use. For less restrictive licensing, the developer recommends purchasing ESP-DASH Pro, which comes with a softer commercial license.

What microcontrollers does ESP-DASH support?

ESP-DASH currently supports ESP32, RP2040+W, and RP2350+W microcontrollers. It does not work with other common platforms like Arduino Uno or plain Raspberry Pi without the specific wireless chips.

How to add custom data visualizations in ESP-DASH?

ESP-DASH includes inbuilt charts, but for custom visualizations, you may need to extend the library or use the Pro version for more widgets. The C++ interface allows updating data, but UI customization is limited in OSS.

Open-Awesome

ESP-Dash

GPL-3.0C++v5.0.2

A blazing-fast C++ library to create real-time, on-device dashboards for ESP32, RP2040+W, and RP2350+W microcontrollers.

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1.3k stars219 forks0 contributors

What is ESP-Dash?

ESP-DASH is a C++ library for creating real-time, on-device dashboards for ESP32, RP2040+W, and RP2350+W microcontrollers. It generates a web-based dashboard interface automatically, allowing developers to monitor and control their IoT projects locally without requiring internet connectivity. The library provides charts, display cards, buttons, and other components that update in real-time as data changes.

Target Audience

IoT developers and hobbyists building projects with ESP32, RP2040+W, or RP2350+W microcontrollers who need a local dashboard interface for monitoring and control.

Value Proposition

Developers choose ESP-DASH because it eliminates the need to learn HTML/CSS/JavaScript while providing blazing-fast real-time updates and keeping all data local to the device. Its C++ interface simplifies dashboard creation for embedded systems compared to traditional web development approaches.

Overview

Blazing fast library to create a functional, on-device dashboard for ESP32, RP2040+W and RP2350+W microcontrollers

Use Cases

Best For

Creating local monitoring dashboards for ESP32-based IoT projects
Building real-time data visualization for microcontroller sensor data
Developing control interfaces for RP2040+W or RP2350+W projects
Implementing on-device dashboards without internet dependency
Adding web-based UI to embedded systems without web development expertise
Prototyping IoT projects with real-time status displays

Not Ideal For

Projects based on microcontrollers not in the ESP32, RP2040+W, or RP2350+W families
Applications requiring highly customized web UI layouts or branding beyond the provided components
Commercial products needing permissive licensing without GPLv3 restrictions

Pros & Cons

Pros

No Web Dev Required

ESP-DASH automatically generates the web interface, allowing developers to build dashboards using only C++ without any HTML, CSS, or JavaScript knowledge, as highlighted in the README.

Real-Time Local Updates

The library pushes live data updates instantly to all connected clients via the device's IP, ensuring responsive monitoring without internet dependency, which is a core feature.

Embedded-First Components

Provides ready-to-use charts, display cards, and buttons specifically designed for IoT data visualization, streamlining dashboard creation for microcontrollers.

Dynamic Runtime Control

UI components can be added or removed at runtime from the webpage, offering flexibility in managing the dashboard interface as described in the features.

Cons

Hardware Limitations

Only supports ESP32, RP2040+W, and RP2350+W microcontrollers, excluding many other popular IoT platforms like Arduino or Raspberry Pi without specific chips.

Basic OSS Feature Set

Advanced features such as tabs, custom branding, and premium widgets are locked behind the paid Pro version, limiting the free offering's capabilities.

Restrictive OSS Licensing

The open-source version is licensed under GPLv3, which may impose copyleft requirements unsuitable for some commercial applications without upgrading to Pro.

Frequently Asked Questions

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