Iteaduino BT

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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.

Go shopping Iteaduino BT (SKU:IM120411006)


  • 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


Microcontroller ATMega328P
PCB size 10mm X 82mm X 1.6mm
Indicators Power,TX,RX,D13,LED1,LED2
Power supply(recommended) 7-23V DC
Power supply(limits) 23 VDC (max)
Communication Protocol UART,SPI,IIC
Clock Speed 16MHz
RoHS Yes

Electrical Characteristic

Specification Min Type Max Unit
Input voltage 7 - 23 VDC
Operating Voltage - 3.3/5 - VDC
DC Current per I/O Pin - 40 - mA



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).


Communicate mode set jumper

There is a jumper to set the connections of HC-05. When the jumper is set in A, the HC-05 communicates to FT232R, when the jumper is set to B, the HC-05 communicates to Atmega328P(board).


Figure 2A:Communicate mode set jumper

Figure 2B:The jumper is set to B

Figure 2C:The jumper is set to A


Datasheet for ATMEGA328

Datasheet for Iteaduino BT

Demo Code for Iteaduino BT Master Mode

Schematic for Iteaduino BT

Fritzing Parts for Iteaduino BT

Useful Link

<Correct Iteaduino BT Datasheet>

By Michael Doherty <Iteaduino BT Test Vedio>

By Benjamin Bellamy <How-To configure and use an Iteaduino BT>

<Wireless Programming Your Iteaduino BT>

<Fritzing Parts: ITEAD Development Board>