December 18, 2014 § Leave a comment
The final physical looking of the Blueooth robot.
This thing looks like a toy, isn’t it? Well, this(robot chassis/mechanism) is taken from two toy cars. Then the extra portion are cut off and glued together and then formed like a chassis. I will post images later. This is done to save some cash and waste more time in thinking and making a chassis on own hand.
Due to the reason that i am not capable of spending a lot of money to my projects i have made this myself. The commercially available chassis are of too much costly for me.
Though the has 4 wheels, it has no conventional steering. How would it take a turn? The answer is simple. The chassis work in the same basic principle like a tank. When wheels of both side moves on same speed, the car goes straight. When either of the side wheels are slowed down/stopped, it will take turn in that side. It can also take turn on its own position by moving the side wheels in opposite direction.
You see, I have added two optical reflection sensor on both front and back side to avoid collision. when the car is about to collide a wall in front/back of it, it stops and moves to opposite direction to avoid collision. It can sense approx.1-2 cm distance depends on the wall/obstacle color. I will upload the code with the two sensors and explain about the codes later.
January 29, 2013 § 11 Comments
Ok, the main problem is, i have just got a Compaq Deskpro EN desktop computer, and what is the best use of it?
The system configuration is
- 1. It has a intel p3 933mhz processor (maybe).
- 256MB ram.
- Onboard graphics(functioning and i don’t know the graphics memory).
- A 40GB maxtor HDD.
- A CD rom drive.
- A Floppy disk drive.
- An extra graphics/agp card mounted on pci port I don’t know the company name or memory.
- A parallel port(idea : i can play with it).
- Two serial(COM) ports. (this is a bonus coz i can attach two arduino with the system and do many things with it)
- Two USB ports..(has many implementations /flexibility)
- An ethernet port.(it can act as a web server/ftp server.
- PS2 ports for mouse and keyboard.
I am trying to install the operating system. The thing has a sticker in front of it that says ” Designed For Windows 2000 ” . I have downloaded Windows 2000 and burned to a CD and booted, installed.
A smile appeared on my face. Not for the reason that i gave a life to that thing, I have discovered that this old thing is pretty much faster with the operating system it have built for.
And it disappeared when i discovered that no audio/video is playing cause there is no drivers for them. It was no problem for me cause i know where i can find the drivers. After a little googling, i found hp website and downloaded the drivers..
This story could end here but I am a little bit more curious. I have not stopped here.
This is a small list of my trying and failing.
- Ubuntu desktop(It boots but stops in the middle. maybe for huge bootscreen image)
- DamnSmall Linux(Stops in the middle for an unknown error)
- Puppy Linux(Stops in the middle for an unknown error)
- SLAX(Stops in the middle for an unknown error)
After those embarrassing failure i just stopped burning and destroying my disc’s and started think that where is the main problem?
I thought it maybe for the low graphics memory the system has on it.
And then I’ve downloaded the ubuntu minimalist CLI (Command Line Install) version, those are less than 30MB, burned, and tried. It works Hoorray…….
Now this is time for going further.
I’ve downloaded Ubuntu 12.04 LTS Server CLI version, burned on a CD and installed it on the old machine. Restarted, this time I am surprised coz it have loaded with the GUI. But much slower and with a 640×480 resolution.
Now, I want to go much more further.. Stay with me to read the stories………………………..