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....
Using USB to UART / RS232 modules with Android phones
Installation: As we compiled the kernel modules needed for USB to UART modules in the previous post , Here I'm going to show how to u...
Compiling kernel modules for an Android phone
I recently got a USB OTG cable for my mobile phone and I wanted to use my PL2303 USB to UART convertor with it. It is great for the embedd...
Native C programs for ARM based Android phones
You can always use Android SDK to program and build Java programs for android phone which are running on Dalvik Virtual Machine . Recently I...
Simple LM386 based audio amplifier
I built this simple LM386-N1 based audio amplifier (Gain=200 example on datasheet) for my radio project. Here I'm testing it using a sma...
Using UART & GPIO with AR7240 MIPS board
As I introduced MIPS based router board which has a AR7240 SoC, I further experimented with it to use GPIO and UART in the chip. I'm u...
MSP430 In circuit programming with MSP430 Launchpad using Spy-Bi wire interface
When we use microcontrollers in our circuits we need to program and debug them in circuits after soldering. Hence, In circuit programming is...
Relay board for Parellel port/Microcontroller interfacing
Relays are awesome small devices which could be used to control other devices. The plus point of relays is,they can be used to drive a diff...
Introduction to MIPS CPU architecture with AR7240
There are many CPU architectures in current embedded devices. MIPS is also a popular architecture for embedded systems. Here I'm going...
Using TI Stellaris Launchpad as a 10Mhz,8 Channel Logic Analyzer
After Googling a bit about the TI Stellaris Launchpad, I found out that it can be used as a 10Mhz 8 Channel Logic analyzer with some small ...
Programming TI Stellaris LaunchPad on GNU/Linux
TI Stellaris LaunchPad has a quite neat ARM Cortex-M4F based microcontroller and built in ICDI debugging interface. It is a great tool for...
Altera Cyclone IV EP4CE6 Testing
As I showed in my previous post ,I’m going to test my CoreEP4CE6 board. It is based on Altera Cyclone IV FPGA (EP4CE6E22C8N) . I got my Al...
Desoldering Surface Mount Devices (SMD)–The hard way
In my previous post, I used some scavenged parts from an old mother board. These old circuit boards are gold mines as they got many reusabl...
Building Real Time Clock (RTC) module based on DS1307 for Arduino
In this post I’m going to build a Real Time Clock (RTC) module based on popular DS1307 RTC chip for using with Arduino or any other micro-co...
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