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This is an instructable for a bluetooth controlled Message Droid. I call it R2Blue2. It moves around and displays messages that you type using your phone or computer. Atleast it was supposed to. Due to many problems such as underpowered batteries and bad cable management I wasn't able to extract the performance necessary. I will explain the problems that plagued this build later.
The messages are sent over a bluetooth connection between the sender and the bot. For my usage, I used a HTC WIldfire running the Blueterm application to send serial commands to bot. The bluetooth module I used on the bot is Bluesmirf Gold which has a default baud rate as 115200. I don't have an FTDI cable to change the baud rate. The baud rate setting shouldn't matter much but whatever is the baud rate of the module, you should set up a serial port of the same baud rate in the arduino code. Otherwise you'll get undefined states and the bot won't function as wanted < imagine R2D2 scream >.
The messages are sent over a bluetooth connection between the sender and the bot. For my usage, I used a HTC WIldfire running the Blueterm application to send serial commands to bot. The bluetooth module I used on the bot is Bluesmirf Gold which has a default baud rate as 115200. I don't have an FTDI cable to change the baud rate. The baud rate setting shouldn't matter much but whatever is the baud rate of the module, you should set up a serial port of the same baud rate in the arduino code. Otherwise you'll get undefined states and the bot won't function as wanted < imagine R2D2 scream >.
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Signing UpStep 1Parts
Arduino Deumilanove
Bluesmirf Gold (or any suitable bluetooth module)
Double line LCD based on the Hitachi HD44780 (most common)
Two 100 rpm geared motors
L298 motor driver
10K potentiometer
Birch strip
Connectors for the birch strip
Ribbon Cable
Lots of single strand wire
General Purpose Board (GPB) ....... if you choose to solder everything
Breadboard
Zip ties
Solder (lots of it if you choose to solder everything)
If you can procure a Arduino shield kit, things will be much easier and more reliable as the present connections to the arduino are not very tight. In India, a shield board is quite expensive and I couldn't find it any where I searched. (if you are from Bangalore and are an electronics geek, you should be familiar with SP Road :P). total cost is about 80 to 100 dollars. The bluesmirf is the most expensive part at 60 dollars.
Bluesmirf Gold (or any suitable bluetooth module)
Double line LCD based on the Hitachi HD44780 (most common)
Two 100 rpm geared motors
L298 motor driver
10K potentiometer
Birch strip
Connectors for the birch strip
Ribbon Cable
Lots of single strand wire
General Purpose Board (GPB) ....... if you choose to solder everything
Breadboard
Zip ties
Solder (lots of it if you choose to solder everything)
If you can procure a Arduino shield kit, things will be much easier and more reliable as the present connections to the arduino are not very tight. In India, a shield board is quite expensive and I couldn't find it any where I searched. (if you are from Bangalore and are an electronics geek, you should be familiar with SP Road :P). total cost is about 80 to 100 dollars. The bluesmirf is the most expensive part at 60 dollars.
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Have a look at my ibles as well!