Tag Archives: accelerometer

My new Development Board : MSP-EXP430FR5739

Hi everybody,

I just got back home from Sakarya. One of the reasons i came back to Istanbul this weekend was a delivery received from Farnell. It was the MSP-EXP430FR5739 Experimenter Board :) . As soon as i came home , i reach the shipment box and opened it. I was already very excited about this board whole week. This development board is going to be a complete new journey for me after my long journey with the Arduinos… anyway enough with the chit chat :)

Lets get into some detail… Why i choosed this board?
You might have already noticed my interest in motion-controlled apps & technologies. It was first started with the Nokia Symbian smartphones with built-in accelerometers.I developed two apps for those devices one called AlertMe and the other was nGUN. I also developed some experimental apps too which are not released for public use. I kept experimenting with accelerometers on my N95 with Python s60 on the go. It is fun and very entertaining to play with accelerometers.

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Self-Balancing Robot First Step:The Interaction

Here is the first step in making of Self Balancing Robot. In this step i worked on Bluetooth & Serial Communication.
Communication scheme:
N95 (Bluetooth)—> PC —–( Serial)—-> Arduino
I used the same motor driver shield which i already made back in Narduino Project.
If you havent heard about Narduino Shield and its simple design done on veroboard click here to see it and its circuit diagram.
After the Narduino shield properly connected to motor wires and the supply connection ,  it is time to talk about coding…
Here below , i shared all the codes used in the project.
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Self-Balancing robot project starts!

I just had an idea yesterday that can get me to make a self-balancing robot without buying any expensive electronic components.
You know last summer i made a cellphone controlled RC Car which had a tabletpc onboard to get commands via bluetooth.That time , having an onboard tabletpc , save me from buying a bluetooth chip which costs about 60$.This time, to make a self-balancing robot i’ll have to have whether an Accelerometer or a MEMS Gyro to track rotation of the robot.
Those sensors are pretty expensive too.So i’m thinkin about putting my n95 smartphone onto the robot.As i have Accelerometer on the smartphone i can use it to measure rotation movement of the robot.

I tried to explain how it is going to work in the photo.

And the finished robot will look something like this:

 

AlertMe 1.1

Few days ago i decided to make an app. like nalertme because i get bored of waiting samir to release it.And today my project’s finished.It’s even announced in symbian-freak.com on the homepage in news.

AlertMe is a mobile python app. to protect your phone from thiefs.With this app. you can set your phone to a constant position.Then when you press start button app. starts to protect your phone from thiefs by alarming.

When somebody or a thief try to move your phone app. will immediately alert with a loud sound.

Download(Alertme 1.1)

Download Python 1.4.4

Download MMPACK 1.51

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