Category Archives: Symbian

My new Development Board : MSP-EXP430FR5739

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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

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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!

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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:

 

NarDuino Project Has Been Finished!

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Hi everybody,

After a very very long time here i am again.It has been a very tiring year as it was the year that i’ve been studying for the YGS-LYS which are the exams that takes students to university by matching them by the ranking of their success.So as the exams ended , i bought an arduino demilanove which has a usb jack on it unlike my old arduino severino’s rs232 serial port.

And i started all over again doing some experiments on interaction between arduino and my n810.My first experiment was to control a light from n810.It worked very well.After that experimental project i decided make a sumobot-alike robot controlled from n810.But i needed a chasis for the project… well after 2 days i heard that my nephew’s rc car is broken.Then i took the car and afterwards i cut off all the circuits of the car to put my own circuit instead.
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After A Long Time

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I’m just tired of writing articles that starts with “it has been a long time etc.”.Because i dont like writing so much.Anyway i’m trying to write as soon as i have free time.

So… There are a lot to write.

Lets get started with my first application for Maemo OS.It’s a simple application that calculate degree of a right triangle with a two given data.After a couple of “Hello World” application i just wanted to do something myself.Then this application came up.Infact this is not something new i generally use that right triangle angle calculator function when i learn a new programming language and if i dont have any software ideas.

And… It has been almost two months that i spent with The Nokia N810 tablet.I’m thinking to write a summary of my experiences with this device.Maybe that may help maemo beginners to use their devices with its all capabilities.

By the way i had a problem on my n95 8gb.It was always asking date and time after every restart.I had asked about this on so many discussion board.They said that i had to change its capacitor which saves date and time and i didnt do that.But however after a month it fixed itself i guess :) . It keeps date and time data now.

And.. i had a problem about 3d problem about my ATI video driver.It was causing errors in all 3d softwares such as 3dsmax , NaturalMotion etc. Last weekend i figured out how to fix this problem.i found  that error is happening on firmwares newer than 5.3.1. anyway …

You know i was going to interact my arduino with N810.After a long tiring hardship , I found that my hand-made arduino is not one of the supported devices and that project turned into a disappointment :(.This disappointment cost me about 15bucks , I wish I had bought that roll-up keyboard instead of that usb-serial converter .

By the way, I designed a wrist-case for n810 which I inspired by computer of the orion hacker in chuck the tv serie.I didnt make it.But i make another case to protect screen against stylus-scratches.Because it may cause serious scratches when you try to draw pictures or something in MyPaint or GIMP.

These are the issues of month as far as I remember.Also you can learn more about me from my twitter account.

http://twitter.com/mclightning

You can also find nice , interesting websites there

Also You can find photos uploaded by me here:

http://www.flickr.com/photos/mclightning/