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Iteaduino-BT is an Arduino compatible board with a master/slave Bluetooth Module HC-05. It based on Arduino UNO/Duemilanove, 100% compatible with its existing program and shields, but with the bluetooth wireless funcion. The power consumption is about 50% of the original Arduino boards.

Basic features

  • Design for Bluetooth communication
  • Compatible with Arduino UNO/Duemilanove pins, holes and dimensions
  • Wide range external input from 7~23V DC
  • Pins out for Sensor and Servo
  • 3.3V/5V Operating Voltage selection


Iteaduino BT

Digital/Servo Interface: D0~D13 pin

Sensor Interface: A0 A1 A2 A3 A4 A5 pin

HC-05 operate mode set switch

There is a 1P2T switch for HC-05 operation mode set. When the switch is set on “DAT” side, the HC-05 will work in the data mode. When the switch is set on “CMD” side, the HC-05 will work in command mode, in this mode, Iteaduino/FT232R could send the AT command to centigrade the HC-05 module (Using Baud Rate 38400). To change the mode, you need to reset the iteaduino BT after you put the switch.

Communicate mode set jumper

There is a jumper to set the connections of HC-05. When the jumpers are set in B side, the HC-05 communicates with FT232R to USB/PC, when the jumpers are set to A, the HC-05 communicates with Atmega328P(onboard).

Microcontroller ATMega328P
Max Frequency 16MHz
RAM Capacity 2K
FLASH Capacity 32K
External Resources
  • Onboard Wireless
  • Electronic Brick Interface
Power Supply
  • External 12V
  • External 24V
  • External 7V
  • External 9V
  • USB 5V
I/O Operation Level
  • 3.3V
  • 5V
Board Size 75mm x 57mm

Useful Links

Correct Iteaduino BT Datasheet 

The datasheet of the Iteaduino BT contains some errors which disables standard usage of the arduino clone.


Iteaduino BT Test Vedio


How-To configure and use an Iteaduino BT

There are many ways to have an Arduino connected: Ethernet, Infra-Red, Wifi, ZigBee, Bluetooth… This post is about an Arduino card that comes with an embedded bluetooth module: the Iteaduino BT.


Wireless Programming Your Iteaduino BT

The original Iteaduino BT does not support wireless programming, we can guide you to hack it, and make it support the Bluetooth programming function.

Here is the hack introduction, just follow us step by step:


Fritzing Parts: ITEAD Development Board



Demo Code


Fritzing Parts