Stand-alone Bluetooth Smart Ready module

OBS421 dual-mode Bluetooth moduleThe powerful stand-alone Bluetooth module OBS421 is a dual-mode (Bluetooth Smart Ready) module complete with embedded Bluetooth stack and serial port application. The OBS421 features a UART interface for transparent serial data transmissions. It can be used as a Bluetooth Smart Ready client for any host and it can access any Bluetooth Smart device that implements services based on the Generic Attribute Profile(GATT), such as a low energy battery service or an automation I/O service.

The OBS421 can also be used in applications where a smartphone, tablet or laptop is to connect to a serial device such as a Programmable Logic Controller (PLC).

Customers may embed their own applications, eliminating the need of an external application processor, thus saving considerably on the bill of material and PCB space. The middleware with easy-to-use interfaces speeds up and simplifies application development. Customer developed applications can make use of the additional module interfaces, such as GPIO, SPI, I2C, JTAG, and UART / USART and analog inputs.

The module is fully Bluetooth qualified and provides modular radio type approvals for the US, Europe, Japan and Canada (FCC, R&TTE, MIC, IC). The OBS421 is also compliant with EMC, Safety and Medical standards.

The robust module is easily configured via AT commands as well as cover a range of 300 meters, throughput up to 1.3 Mbps and operating temperatures of –30°C to +85° C.

Highlights

  • Bluetooth v4.0 with Bluetooth low energy and Classic Bluetooth (Bluetooth Smart Ready)
  • Embedded stack (SPP, DUN, PAN, GATT)
  • Cortex M3 MCU for customer developed applications
  • u-blox Low Energy Serial Port Service
  • High throughput of 1.3 Mbps
  • Advanced multipoint capability with 7 slaves
  • Apple iOS and Google Android connectivity

Click here for high resolution image.

Features

  • Bluetooth v4.0 (Bluetooth low energy and Classic Bluetooth)
  • Range:
    • 250 m, internal antenna
    • 300 m, external antenna
  • Output power:
    • 11 dBm, internal antenna
    • 13 dBm, external antenna
  • Throughput: Max 1.3 Mbps (Classic Bluetooth)
  • Microprocessor capacity: 72 MHz, ARM® 32-bit Cortex M3 processor, 64 kB RAM & 384 kB flash
  • Embedded software:
    • u-blox Bluetooth stack
    • Serial port application1
  • Bluetooth profiles & services:
    • u-blox Low Energy Serial Port Service
    • Generic Attribute Profile (GATT)
    • Serial Port Profile (SPP)
    • Dial-up networking Profile (DUN GW,
      DUN DT)
    • Personal Area Networking Profile (PAN) roles: PANU & NAP1
  • Profile roles:
    • Central Role
    • Peripheral Role
  • Max. number of slaves:
    • 7 Classic Bluetooth only
    • 3 Classic Bluetooth & Bluetooth low energy
  • Configuration tools:
    • AT commands via Bluetooth / serial port
    • Serial Port Toolbox (Windows-based SW)
  • Low Emission Mode®: Prevent disrupting other 2.4GHz radios
  • Wireless Multidrop™: For simultaneous connections to Bluetooth low energy and Classic Bluetooth devices.
  • Extended Data Mode™: Induvidually controlled multipoint data channels1
  • Repeater functionality: Extended range1
  • Security: Simple Pairing
  • Android connectivity
  • iOS connectivity:
    • Supports Bluetooth low energy & Classic Bluetooth1 connections with iOS devices*
  • Electrical data:
    • Power supply: 3.0 to 6.0 VDC
    • Power consumption: 0.6 mA @3.0V (min.),
      44 mA @3.0V (average Tx)
  • Interfaces:
    • UART logic level
    • RS232/RS422/RS485 (option via external transceiver)
    • Baud rate:
      • Max 1.5 Mbit/s
      • Support for non-standard baud rates
    • Flow control: CTS/RTS (hardware) or none
    • GPIO pins: 9 pins / 21 pins 2
    • SPI, I2C, USART Logic level2
    • ADC channels2: 7
    • U.FL antenna connector (external antenna version only)
  • Package:
    • Dimensions:
      • 16.0 x 36.0 x 3.2 mm (internal antenna)
      • 16.0 x 36.0 x 2.6 mm (external antenna)
    • Weight: 2 g
    • Mounting:
      • Mounting holes
      • Machine mountable
      • Board-to-board connector
      • Solder land pads
  • Environmental data, quality & reliability:
    • Operating temperature: –30°C to +85°C
  • Certifications and approvals:
    • Type approvals:
      • Europe (ETSI R&TTE)
      • US (FCC/CFR 47 part 15 unlicensed modular transmitter approval)
      • Canada (IC RSS)
      • Japan (MIC - formerly TELEC)
    • Medical Electrical Equipment: IEC 60601-1-2
    • Bluetooth Qualification: v4.0"Bluetooth Smart Ready" refers to a device that is compatible with both Classic Bluetooth and Bluetooth low energy, the idea being that it provides a bridge between the two technologies.

* All current OBS421 module versions support Apple iOS connections via Bluetooth low energy. Classic Bluetooth connections are supported only by OBS421 versions with iAP support, but other special requirements also apply, see http://tinyurl.com/ndk6vj2.

1 Not applicable when used with customer developed application
2 Only applicable when used with customer developed application

Documents

Product Documentation

Video

  • View the Getting Started tutorial video that shows a u-blox Bluetooth module using a Starter Kit & Configuration PC-program.
  • View the Bluetooth low energy demo video that shows the use of the u-blox Low Energy Serial Port Service in an industrial setting with a robot, a computer, an iPhone and the modules OLS425, OBS421, and OLP425.

How to buy

  • Profile roles
    • Central Role, Peripheral Role
  • Max. number of slaves
    • 7 Classic Bluetooth only
    • 3 Classic Bluetooth & Bluetooth low energy
  • Configuration tools
    • AT commands via Bluetooth or serial port
    • Serial Port Toolbox (Windows-based SW)
  • Low Emission Mode™ prevents disrupting
    other 2.4 GHz radios
  • Wireless Multidrop™Possible with simultaneous
    connections to
    Bluetooth low energy and Classic Bluetooth devices.
  • Extended Data Mode™: separated multipoint
    data channels
  • Quality of Service (QoS)
  • Repeater functionality, extended range
  • Security Simple Pairing
  • Android connectivity: SPP/PAN
    Classic Bluetooth and Bluetooth
    low energy connections with Android d
    evices (Android 4.3
    and higher)
  • iOS connectivity: Supports Bluetooth low energy
    connections with iOS devices, supports
    Classic Bluetooth connections with iOS devices1

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