DFRobot
Bluno Mega 2560 - An Arduino Mega 2560 with Bluetooth 4.0
The Bluno Mega 2560 combines the ATmega2560 microcontroller with an integrated TI CC2540 Bluetooth 4.0 (BLE) module, bringing wireless communication to the A...
The Bluno Mega 2560 combines the ATmega2560 microcontroller with an integrated TI CC2540 Bluetooth 4.0 (BLE) module, bringing wireless communication to the Arduino Mega form factor. It supports wireless programming over BLE, Bluetooth HID, iBeacon, and serial pass-through — while remaining fully pin-compatible with standard Arduino Mega shields and projects.
With 54 digital I/O pins (15 PWM), 16 analogue inputs, 4 hardware UARTs, and 256 KB of flash memory, the Bluno Mega provides ample resources for complex projects that need both extensive I/O and wireless connectivity.
Key Features
- ATmega2560 + CC2540 BLE – Arduino Mega with integrated Bluetooth 4.0
- Wireless Programming – Upload sketches over BLE without a USB cable
- Bluetooth HID – Emulate keyboard/mouse over BLE
- iBeacon Support – Broadcast as a BLE beacon
- Serial Pass-Through – Transparent BLE-to-serial communication
- AT Command Configuration – Configure BLE parameters via serial commands
- USB Firmware Updates – BLE chip firmware upgradeable over USB
- Full Mega Pin Compatibility – Drop-in replacement for Arduino Mega 2560 projects
Specifications
- Microcontroller – ATmega2560
- Clock Speed – 16 MHz
- BLE Chip – TI CC2540
- BLE Range – Up to 70 m (open space)
- Operating Voltage – 5 V
- Input Voltage (recommended) – 7–12 V DC
- Input Voltage (max) – 6–20 V DC
- Digital I/O – 54 (15 PWM)
- Analogue Inputs – 16
- I/O Current per Pin – 40 mA
- Flash Memory – 256 KB (4 KB used by bootloader)
- SRAM – 8 KB
- EEPROM – 4 KB
- Hardware UARTs – 4
- Dimensions – 108 × 54 mm
Ideal For
- Bluetooth-connected robotics and automation
- Wireless sensor networks and data logging
- BLE HID devices and iBeacon applications
- Projects requiring extensive I/O with wireless capability
Package Contents
- 1× Bluno Mega 2560
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- BLE
- BLE stands for Bluetooth Low Energy, a Bluetooth mode designed for lower power use and modern phone compatibility. It matters because BLE support can make the module easier to use with Apple devices and battery-powered projects, though it may behave differently from classic serial Bluetooth.
- Bootloader
- Small starter software on a microcontroller that lets new code be uploaded before the main program runs. Knowing how to enter bootloader mode matters when you need to program the board or recover it after a faulty sketch.
- EEPROM
- A type of non-volatile memory that keeps stored data even when power is turned off. In a sensor module, it can be used to store settings or calibration data so they do not need to be re-entered every time.
- Flash memory
- Non-volatile memory that keeps stored data even when power is removed. In this sensor, it matters because enrolled fingerprint templates can remain saved after the project is turned off.
- HID
- Human Interface Device is a USB device class used for keyboards, mice, gamepads and similar controls. If a board supports HID over USB, it can act like an input device to a computer without needing a custom driver.
- iBeacon
- iBeacon is Apple’s Bluetooth beacon format for broadcasting an identifier that nearby devices can recognise. Support for iBeacon matters when building proximity or location projects that need compatibility with apps or systems using that format.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- PWM
- Pulse Width Modulation is a way for a digital pin to simulate variable output power by switching on and off very quickly. It matters for controlling things like LED brightness, motor speed, or servo-style signals from a microcontroller pin.
- SRAM
- Fast temporary memory used by a processor while a program is running. More SRAM helps with projects that handle larger data buffers, networking, displays, or more complex code.
- TI CC2540
- A Texas Instruments Bluetooth Low Energy chip used to add wireless communication to embedded projects. In this kit it provides the BLE connection, so it affects how the controller can send readings to a phone or be configured wirelessly.
Find this product in
Connectivity
ATmega1280/2560 Datasheet
Datasheet · 7.1 MB · Click any page to view full size
Supplier page — dfrobot.com
Supplier Description · 607.8 KB · Click any page to view full size
Related Tutorials
Free guides on learn.littlebird.com.au
