විදුලි බිලත් වැඩි වේගෙන යන එකේ CFL Bulb දාන්න හැදුවත් හොඳ එකක් රු.500කට එහා! ඉතින් කාලයක් තිස්සේ මම LED Bulb ගැන හොය හොයා හිටියේ. ළඟකදි පිටකොටුවේ පලවෙනි හරස් වීදියේ රස්තියාදු වෙන වෙලාවක දැක්කා නානාප්රකාරයේ LED බල්බ් විකුණන්න දාලා, කොටින්ම pavement එකේ තියෙනවා 3w ඒවා රු.350 ඉදන් ! ඒ ගැන වැඩිය විස්වාස නැති හින්දා මම ගියා තොග කඩේකට, […]
We wanted a LCD to display various settings and generally to impress the crowd 🙂 We ended up using the standard 16×2 LCD display.
Part 3: Motor driver board We used 2 gear motors with rubber wheels. 14 cm Zip/cable ties were used (2 per each motor) to fix the motors to the base plate. It has the following features: The motor driver chip L293D (D=dual direction) was a very easy chip to implement. The enable pin is used […]
Part 3: Optical sensor board After visiting many similar projects and testing loads of designs we settled down to use 3 sensors arranged as a triangle. Our assumptions of deciding the distances were based on: The board is white (formica) The standard 2cm black color electrical tape is used for the lines Testing the prototype […]
Part 2 : Constructing the body We decided the size to be 12cm x 10cm. We needed the space to fix the Arduino board and motor driver, at this point the boys wanted to install a knight rider light system as well – just to add some visual effects. So the space is required to […]
Part 1 : Brainstorm I was looking for an effective way to teach how a CPU work to bunch of AL students. The kids were seriously bored studying the history of computers, NBF form, system flow chart diagrams that still talk about punch card readers, Von Neumann architecture, CPU flags and the various address modes […]
Yes, that’s exactly the problem I faced today morning. My Asus-P5VDC-MX based PC started throwing me the (infamous) mup.sys error. It goes like this, I click the ‘ON’ button, I see the BIOS messages and the screen is full of vertical lines, dots mostly. Windows XP shows the familiar ‘Do you want to goto SAFE BOOT’ […]
I would like to share some of the rare pictures of ePDA. A brave project started by MediaSolv in 1999. It was ahead of its time, just like many other projects MediaSolv tried hard to commercialize.
I guess my love for robots started when I was in eighth grade or so. It must be the tele-series ‘Battle Star Galactica‘ and continues visits to my school library’s, ‘science – reference only’ section. The various colorful sci-fi dreams kept my head full. I had sketches of weird machines all over my textbooks! The […]