Recently, I learned that, there are RGB LEDs called NeoPixels with a kind of one wire interface built-in to change the colour of the LED by...
Sinhala font installation on Sony Xperia V (Android)
You can install any Sinhala font from your mobile itself and use it in any browser you like with following instructions. Preparation: 1)...
Experimenting Near Field Communication (NFC) with NXP MIFARE MF1S50 tags with Sony Xperia V
I have a Near Field Communication (NFC) capable Sony Xperia V mobile phone and I was able to communicate phone to phone. Then, I found som...
Gerber viewer for your Android mobile phone
When we are working with PCB fabrication systems, " Gerber " files are widely used as the input to the fabrication device from the...
Interfacing sensors from Android mobile phone via Bluetooth
Most of the Android powered mobile phones have many in-built sensors. Android API gives us access to these sensors in API level without low...
Modifying cheap servo motor for continuous rotation
You can buy cheap servo motors from ebay for a price of less than a gear motor. But these servo motors can't be used for continuous moti...
Ultrasonic distance measurement using HC-SR04 ultrasonic module + Arduino Pro
Ultrasonic sensors (Ping sensors) are widely used in distance measurement as they are cheap and has a quite good accuracy. I got this cheap ...
Computer controlled automated guided vehicles (AGV) using Parellel port interfacing
As we built a relay board to interface with " parallel port " in my earlier post. Today I'm going to talk about the control s...
RS-485 Communication testing with MAX485
As we know about RS-232 communication protocol, I'm going to try RS-485 communication between two nodes. RS-485 can support multiple s...
Writing and testing Linux kernel modules for Android
We compiled and installed some modules in Linux kernel in previous post . Here I'm going to write my own kernel modules and do the same....
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