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Introduction

RadioKit is an open-source alternative to RemoteXY that lets you define your UI in C++ and control it from a native Flutter companion app over BLE, Serial, WiFi, or Cloud relay.

What is RadioKit?

Section titled “What is RadioKit?”

RadioKit is a powerful, object-oriented Arduino library that bridges your hardware and a highly customizable mobile dashboard. It allows you to build industrial-grade control interfaces using simple C++ structures.

Key Features

Section titled “Key Features”
  • Hardware Agnostic: Supports ESP32 (NimBLE), Nordic nRF52, STM32, and any board with a Hardware Serial port
  • Tailored Memory Model: Each widget only consumes the RAM it needs — no dynamic allocation
  • Zero Configuration: The UI is defined in your Arduino code; the app dynamically builds the dashboard upon connection
  • Reliable Communication: Built-in sequence tracking and retransmission for critical commands
  • Spring Physics: High-fidelity spring simulations for sliders, knobs, and joysticks
  • Multiple Transports: BLE (NimBLE), Serial (USB CDC, FTDI, CP210x, CH340), WiFi, and Cloud relay

Architecture

Section titled “Architecture”

RadioKit consists of two main components:

  1. Arduino Library (rk-arduino) — Define your UI widgets in C++ and manage transport connections
  2. Flutter App (radiokit-app) — Native companion app that renders the UI and communicates with your device

Communication Flow

Section titled “Communication Flow”
Arduino Device  <--BLE/Serial/WiFi/Cloud-->  Flutter App
     |                                            |
     +-- Widgets (C++ structs)                    +-- Dynamic UI Rendering
     +-- Transport Layer                          +-- Real-time Control
     +-- Protocol v5                              +-- Protocol v5

Next Steps

Section titled “Next Steps”