Name: Ramkumar Sundarakalatharan
Member since: 2004-06-24 09:15:04
Last Login: 2008-05-16 02:37:29


Recent blog entries by everdawn

My goodness, I finally finished what i started some 3 months back , Using my mobile phone to control my Little robots, finally got it tweaked with the help of Adarin...He helped me with WAP programing and debugged my Java codes, and he says he's going to implement something like that soon..

Now i am a little free and going to finish a project which i started while I was with the RVS college of Engg and tech ..

Yeah, that robotic Lawnmower and a spin off , I am trying to get a GPR on it to investigate possibilities of operating a MINE robot...

But, alas. I have no access to the SENSOFT gpr i am no more with the college ...though my manager has promised to get me one(hired) from AOC...lets see.. I'll keep you posted...

Yeah , a long time after sometime...

I finally got time to post entries here in

I have been busy preparing for my PHP examination and 3 projects at a stretch in office, so had to slow down in my Robot-building endeavors...

Only from 3rd of February i was able to concentrate on the MK2 version of my SAHMHR...

Finally got to rework my track rotate correctly... previously my left gearbox was lagging so my bot would automatically sway to left & after say some 20 feet it would be going 90degrees left from where i started...

Since in my current budget i don't have enough money to spare on a new gearbox, i tried a new approach..

I induced a t/12 delay(i used a six step traction system of 60degrees each) in my right motor which resulted in slightly improved performance...

and upon trial and error , i just found t/9 was good , and so for every 9 revolutions the right would completely stop...

{in other words, i found a way to correct it by mimicking the problem in this side too}

but in long run it seems it sways left n right and again left and so on... but i fixed it just enough for me to test my next version of case based navigational algorithm...

1 Nov 2006 (updated 1 Nov 2006 at 08:39 UTC) »
I reached a Milestone in my SAHMHR-Mk.2 project

Some two days ago i (finally) received my new Tx crystals which were burnt sometime bfore in the previous trial runs. Obviously, i tried to use some assortment of crude HF Tx/Rx with a diffentriater to "Stitch" my own version of GPR.

But it was (ahem..) too ambitious and it burned the onboard TX crystals in the robot(rover) which i used to transfer some data like Range, Bearing to my laptop. So i tried hard but couldnt find the excat combination of Tx/RX crystals in here and finally got in Acroname and orderd it in mid August and finally got it and checked it.Integrated it in the control circuit that i have tied to a RS232 in my laptop, and trying not to be panicked , i switchd the battery on, and you know what the POST occured smoothly and data transfers were as expected., and the trial run lasted some 18 minutes(limited bcoz the battery wasn't charged fully.)

But, i got all the data and feedback i neded to tweak my SW and the board.The activities in this trial Run Include,

1,Succesful Transfer of POST data along vehicle diagnostics via FM to the Laptop. 2,Emergency breaking and engagement of secondary (lo-level) sensors in the absence/severe of communication from basestation.(of course i switched off the TX to study it) 3,Transmission of Drive torque data and battery meter(Ampere) too.

Seperately in my BEAM Walker i'm yet to name, i dashed the bicore in favour of some FSM implementation, with a gate array of 10 7402 4 7414 and some other things to function as a primitive Adder/Subractor ,...and the characteristics are really intresting... Soon i think of documenting them in a webspace and will keep you updated ... Bye for now and Happy Robot building..and have fun...

Today i Decided to post regular updates of my Robotic/Tech Endavours in Presently i'm working on three seperate projects which has anything to do with Robots. 1,SAHMHR-MK.2- s thats my Good old Buddy...I'm refining it with 2 platforms and a bigger memory and programing also i'm planning of adding Gyroscope, optoelectronic sensors among others...

2,PROPELLER: This one is a BEAM inspired except for i'm planning of using FSM based processing element instead of the Nv Net in the BEAM technique...

3,ReRoMaJa: Despite the funny name, its my 1st serious attempt in writting software(mainstearm) for controling my robots.. (its "Remote Robot Manipulator in Java").I'm trying to compile a small code to be used in my cellphone to control my robots thru the IR/BT in my cellphone....

Any ideas in these are welcome...and i am open to sharing this with you to....

Please feel free to contact me ... Until next Post:

Bye.... :-) Have a nice Robobuilding time....

Hi all, this is my first clog entry in here.... have to maintain lj,blogspot,360. but considering bloging here, i can meet some body with similar interest...


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