Seeed Bluetooth BLE Shield, HM-11
This Seeed BLE Shield utilizes an HM-11 module to provide your Arduino/Seeeduino with serial BLE function. It only takes two pins of the micro controller to communicate your device with this shield. With support for a BLE ComAssistant APK, this BLE Shield can talk to your mobile phone more easily without pairing. You can use it in many conditions, like robot controls or remote control equipment ,etc. We prepared an easy and convenient command set for this shield so that you can use neat and concise code to run the function.
Features:
Arduino/Seeeduino compatible
UART serial port of HM-11 on the Shield can be connected to Arduino by jumpers
With two Grove connectors, making it easy to connect I2C and digital IO Grove modules to Arduino
AT commands support
Parameters
| Specifications | Value |
|---|
| BT Version | Bluetooth Specification V4.0 BLE |
| Working Frequency | 2.4GHz ISM band |
| Working Current | < 15 mA |
| Sourcing Current | < 30 mA |
| Sleeping Current | < 3 mA |
| Modulation Method | GFSK(Gaussian Frequency Shift Keying) |
| RF Power | -23dbm, -6dbm, 0dbm, 6dbm, can modify through AT Command AT+POWE |
| Speed | Asynchronous: 6K Bytes, Synchronous: 6K Bytes |
| Sensibility | ≤-84dBm at 0.1% BER |
| Security | Authentication and encryption |
| Service | Central & Peripheral UUID FFE0,FFE1 |
| Supply Power | 5v |
| Working Temperature | –5 ~ +65 Centigrade |
| Size | 68mm x 43mm
|
Documents
Please visit our wiki page for more info about this product. 
