One Connect - Arduino/ESP

One Connect – The Ultimate Bluetooth Controller for Arduino & ESP32

One Connect is a powerful Bluetooth controller designed for makers, students, engineers, hobbyists and IoT enthusiasts. Easily connect and control Arduino, ESP32, ESP8266, HC-05, HC-06 and other compatible Bluetooth-enabled devices from your Android phone through a clean, modern and easy-to-use interface.

Whether you're building a home automation system, Bluetooth robot, RGB lighting project or any custom electronics project, One Connect provides the tools you need in a single application.

Features
Bluetooth Device Management

• Scan nearby Bluetooth devices
• Pair supported Bluetooth devices directly from the app
• View paired devices
• Save favorite devices
• Recent devices list
• Quick reconnect
• Auto Connect support

Bluetooth Terminal

Communicate directly with your Arduino or ESP32 using the built-in Bluetooth Terminal.

• Send custom commands
• Receive real-time data
• TX/RX monitor
• Clear terminal output
• Ideal for debugging and serial communication

RGB LED Controller

Control RGB LEDs and lighting projects with an intuitive interface.

• Color picker
• Brightness adjustment
• Smooth color control
• Perfect for ESP32 RGB projects

LED Strip Controller

Designed for addressable LED strip projects.

• Multiple lighting effects
• Easy Bluetooth control
• Compatible with custom Arduino and ESP32 firmware

Robot Car Controller

Control Bluetooth robot cars with responsive controls.

• Direction buttons
• Smooth movement
• Low latency control

Game Controller

Use an on-screen gamepad for Bluetooth-controlled projects.

• Joystick
• A/B/X/Y buttons
• Responsive controls
• Great for robotics and gaming projects

Voice Controller

Control your projects using voice commands.

Simply speak supported commands and One Connect converts them into Bluetooth commands for your hardware.

Switch Controller

Control relays, LEDs, fans, motors and other electronic devices with simple ON/OFF switches.

Keypad Controller

Send numeric or custom keypad commands to your Bluetooth devices.

Modern Material Design

• Clean interface
• Fast navigation
• Responsive layout
• Optimized for different screen sizes

Compatible Devices

One Connect works with many Bluetooth-enabled development boards and modules, including:

• Arduino Uno
• Arduino Nano
• Arduino Mega
• ESP32
• ESP8266
• HC-05
• HC-06
• Other compatible Bluetooth serial devices

Compatibility depends on your hardware and firmware implementation.

Ideal For

• Arduino Projects
• ESP32 Projects
• ESP8266 Projects
• Home Automation
• Robotics
• Smart Lighting
• RGB LED Projects
• Relay Control
• DIY Electronics
• IoT Projects
• Bluetooth Communication
• STEM Learning

Permissions

Bluetooth permission is used to discover, pair and communicate with compatible Bluetooth devices.

Microphone permission is only used for the optional Voice Controller feature. Audio is not stored by the app.

Internet access is used to support app services such as ads and analytics.

Privacy

One Connect does not require user registration or account creation. Bluetooth communication is performed only with devices selected by the user.

Note

This app is intended to work with compatible Bluetooth-enabled hardware and requires appropriate firmware running on your Arduino, ESP32 or other supported device.