ITEAD BLE SHIELD

Overview

BLE shield is to adapt Bluetooth Low Energy to serial port, which is specifically designed for Arduino motherboard and compatible boards, plug and play. As the shield supports both 3.3V and 5V operating levels, it can be used together with other compatible motherboards such as ChipKit. BLE shield enables your Arduino board to communicate with other BLE devices, that is, communication with IOS devices, including iPhone 5, iPhone 4S, iPad 3 and iPod touch 5 can be achieved.

Features

• Supports both 3.3V and 5V operating levels, compatible with more motherboards
• Serial port connection selector, you can randomly choose connection between BLE shield and UART of the motherboard
• Onboard reset button
• With interface for electronic brick, you can easily connect a variety of electronic brick modules

Specifications

PCB size	56.0mm X 44.7mm X 1.6mm
Supply voltage	5V
Operating level	3.3V and 5V
Protocol	Bluetooth 4.0
Indicators	PWR and Status

Electrical Characteristics

Parameters	Min.	Typical	Max.	Unit
Power supply voltage	1.65	3.3	3.3	VDC
Working current (VCC=3.3V)	-	50	-	mA
Emission power	-	-	4	dBm
Sensitivity	-	-	-84	dBm
Transmission velocity	-	6	-	Kbps
Working temperature	-5	-	65	℃

Hardware

UART multiplexer

You can use jumpers to connect TXD and RXD pins of HM-10 module to D0~7 of Arduino.

When connecting in the following way, BLE shield is to connect and communicate with hardware UART of chip Atmega328 on the board.

When connecting in the following way, BLE shield is to communicate with chip Atmega8U2 or FT232RLon the board. They are connected to PC via USB cable, when connecting in this way, serial software of PC can be used to control or configure HM-10 module.

Apart from the two ways above, you can also connect TXD and RXD to pins D2 ~ 7 and use a soft serial library to control BLE shield.