Elecrow
ELE BlueTooth Shield-V1.2
The ELE Bluetooth Shield V1.2 adds wireless serial communication to your Arduino or Crowduino via Bluetooth V2.0+EDR. Simply stack it onto your board, select...
The ELE Bluetooth Shield V1.2 adds wireless serial communication to your Arduino or Crowduino via Bluetooth V2.0+EDR. Simply stack it onto your board, select two digital pins (D0–D7) for software serial, and start sending data wirelessly at up to 3 Mbps.
Built around a CSR Bluecore 04-External chip with Adaptive Frequency Hopping (AFH), this shield supports both Master and Slave modes with a configurable baud rate and AT command set. It provides reliable communication up to 10 m indoors.
Key Features
- Bluetooth V2.0+EDR – Up to 3 Mbps modulation with 2.4 GHz radio transceiver
- Arduino Compatible – Standard shield form factor for Arduino, Crowduino, and Seeeduino
- Flexible Serial Pins – Choose any two pins from D0–D7 for software serial
- Master/Slave Modes – Configurable via AT commands
- On-Board PCB Antenna – No external antenna required
- 5 Analog I/O Expansion – Additional analog pins for connecting other devices
Specifications
- Bluetooth Version – V2.0+EDR
- Default Baud Rate – 38400
- Data Format – 8 data bits, 1 stop bit, no parity
- Default PIN Code – 0000
- Range – Up to 10 m (indoors, without obstacles)
- Interface – UART (TTL)
Package Contents
- 1× Bluetooth Shield V1.2 (assembled)
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- AT command set
- An AT command set is a text-based control language sent over a serial terminal to configure a device. It matters because you can change settings such as baud rate and flow control without writing custom firmware.
- baud
- Baud is the signalling rate of a serial connection, often used as the speed setting for UART communication. Matching the baud rate matters because both connected devices must use the same setting for readable data.
- PCB antenna
- A PCB antenna is an antenna pattern built directly into the circuit board rather than a separate metal antenna. It matters because placement, nearby metal and enclosure design can affect wireless range.
- Shield
- An add-on board that plugs into a main controller board to give it extra features such as sensing, motor control or communication. Knowing a product supports shields helps you judge whether it can connect neatly into an existing maker-board setup.
- UART
- UART is a simple serial connection that sends data over separate transmit and receive wires, often labelled TX and RX. It matters because this module is designed to replace a wired UART cable with a wireless link while keeping the same serial data format.
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