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

Note: Don’t connect the jumpers when in upload sketch, connect them after finish uploading.


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>