> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Bluno M3 - A STM32 ARM with Bluetooth 4.0 (Arduino Compatible)

**Type:** Product page · **SKU:** DFR0329 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/bluno-m3.html ([markdown](https://core-electronics.com.au/bluno-m3.html.md))

## Retired product

This product is retired and no longer available for purchase. Search the catalogue for an alternative.

## How to buy

- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

### Introduction

 The Bluno M3 is a new Arduino compatible prototyping platform based on a 32-bit ARM processor. This arduino microcontroller integrates a Bluetooth 4.0 chip and a STM32 ARM controller on the board. As a member of Bluno family, Bluno M3 inherits most common Bluno features, such as bluetooth connectivity, Bluetooth wireless programming and mobile phone controlling. In addition, thanks to its new 32-bit microcontroller, Bluno M3 has a much more powerful performance, more storage space and more interface resources. You may also check Bluetooth microcontrollor selection guide to get more information.

The ARM processor is famous for its efficient processing performance, but one of the downsides to this is that its developing environment is also quite complicated. So DFRobot has been trying very hard to solve this: the underlying protocol and development environment have been rewritten to accommodate for Arduino language usage, giving it full Arduino compatibility. Bluno M3 has 512K flash memory and 64K SRAM, and the integrated Bluetooth 4.0 (BLE) supports Bluetooth wireless control or Bluetooth wireless programming.
 
**Note: The special IDE for M3 only supports Windows currently.**
 ![Bluno M3 -  A STM32 ARM with Bluetooth 4.0 (Arduino Compatible) Comparsion with Arduino Uno](https://image.dfrobot.com/image/data/DFR0329/Fig1.jpg) *Size Comparison. Left: Arduino Uno Right: Bluno M3*
 ![Bluno M3 -  A STM32 ARM with Bluetooth 4.0 (Arduino Compatible) Connection with I/O expansion](https://image.dfrobot.com/image/data/DFR0329/Fig2.jpg) 
*[I/O Expansion Shield](https://www.dfrobot.com/product-1370.html) for Bluno M3*  
**Project 1: [Make Your Own Arduino Weather Station](https://www.dfrobot.com/blog-465.html)** This durable arduino weather station kit includes an anemometer, wind vane, rain bucket and DH11 temperature and humidity sensor. It can transmit data via serial or RF interfaces.

Hardware List:

[LCD12864 Shield for Arduino](https://www.dfrobot.com/product-1084.html)
[Weather Station Kit with Solar Panel](https://www.dfrobot.com/product-1291.html)
[Weather Station Kit with Anemometer/Wind Vane/Rain Bucket](https://www.dfrobot.com/product-1308.html)
[Bluno M3 - A STM32 ARM with Bluetooth 4.0 (Arduino Compatible)](https://www.dfrobot.com/product-1369.html)

#### FEATURES

- Supports Bluetooth Wireless Programming
- Supports Bluetooth HID
- Supports AT commands to configure BLE
- Supports firmware upgrades
- Supports mobile control
- Supports firmware updates
- Compatible with Arduino Uno pin mappings
- Supports Android and IOS applications, open source code, suitable for secondary development by the user
 
#### SPECIFICATION

- Microcontroller: STM32 F103RET6
- Clock Speed: 72MHz
- Bluetooth chip: TI CC2540 (Bluetooth 4.0)
- Communication Range: 30m(1181")
- Operating Voltage: 3.3V
- DC Supply: USB Powered or External 7V~12V DC
- Digital I/O Pins: 39
- Analog Input Pins: 11 (Multiplex)
- External Interrupt: 39 (D0~D38)
- I2C/IWC: 30 (Default SDA), 29 (Default SCL)
- SRAM: 64K
- Flash: 512K (Customizable Flash assignment, refer to Flash chapter for more info)
    - Default User Code repository: 492K
    - Default User Data repository: 20K
- SPI: SPI,SPI1
    - SPI 12(MISO), 11(MOSI), 13(SCK)
    - SPI1 33(MISO), 34(MOSI), 32(SCK)
- Serial Port: 5 (Serial1/Serial2/Serial3/Serial4/Serial5)
    - Serial1 0(Rx1) & 1(Tx1)
    - Serial2 22(Rx2) & 21(Tx2)
    - Serial3 30(Rx3) & 29(Tx3)
    - Serial4 8(Rx4) & 9(Tx4)
    - Serial5 25(Rx5) & 23(Tx5)
- Dimensions: 68mm x 31mm(2.68"x1.22")
 
#### DOCUMENTS

- [Bluno M3 V2.1 WiKi](https://www.dfrobot.com/wiki/index.php/Bluno_M3_SKU:DFR0329)
- [Bluno M3 V2.2 WiKi](https://www.dfrobot.com/wiki/index.php/Bluno_M3_V2.2_Software_Development_Environment)
 
#### SHIPPING LIST

- Bluno M3 Microcontroller x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/d/f/dfr0329-1.jpg)