Sunday, March 4, 2012

Arduino + Bluetooth Module

My experiment with Aruduino + Bluetooth. Ordered Bluetooth module at ebay (approx $8). Got it in 8days. Had issues in making it work. First tried making connection in bread board and found soldering wires in the bluetooth module will be difficult. So took a small general purpose PCB and soldered few components.


Arduino working at 5V so for TX (arduino) to RX (Bluetooth) put 1K8 + 3K3 resistor voltage divider. For RX I just put 200R resistor in serial.


Two LEDs connected to PIO8 & PIO9 through 1K resistor to show activity & pairing status. Put Arduino Standard Firmata fw. Set baud rate 38400 in Firmata thinking bluetooth module default baud rate is 38400 (this is what I got from the bluetooth module PDF file).

Tried connecting from my Samsung Galaxy SII using Arduino Commander app. No response. Ultimately need to use scope to find out that bluetooth module default baud rate is 9600. Once I changed to this baud rate in Standard Firmata fw, I could connect to Arduino and communicate.

What is further? - Going to make this as IR transmitter to control TV etc

5 comments:

  1. Such type of projects are easy to implement while using Arduino & Bluetooth Module. It seems pretty good, i will implement this to connect to Arduino for communication.

    ReplyDelete
  2. Once you have done, share it with me if you can. Thanks. In between I started working on something else so no progress at my end.

    ReplyDelete

  3. Are you looking for the Best #QuadcopterKits in #India? You are on The Right place. All of the #Quadrocopter and components, whether they are brand new or established, always CLAIM to produce the Best #QuadcopterKit out there in the market today. ----> http://www.roboshop.in/quadcopter-complete-rty or http://www.roboshop.in/quadcopter

    ReplyDelete
  4. We have most demanding #quadcopterkit for the BE #final #year #project. Make your project "3 idiots #quadcopter" by simply assembling the kit and get #highest #marks by project incharge!!! ------> http://www.roboshop.in/quadcopter-complete-rty

    ReplyDelete
  5. Get safe precaution during the COVID-19 Pandemic stay at home and take all necessary precaution like keep wash your hand with soap, use sanitize again and again don't go outside and keep maintaining social distancing. Online Medical Store in India
    If you want any medicine you can find online medical equipment supplier who can avail.
    Local Medical Supplier

    guest post sites
    Get the blog posting sites from these guest blogger who provide free guest post sites
    guest blogger provides list of guest blogging

    ReplyDelete