Fixing Raspberry Pi WiFi dropping issue

Many of our Raspberry Pi projects needs remote accessibility. This means you spends lot of time using either VNC or SSH to access the Raspberry Pi. Unfortunately, when wifi connectivity drops and failed to re-connect your whole world stops right? On such situations, physically accessing the RPi and...

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XMPP/Jabber for IoT Devices - Part 2

From the previous post we discussed nuts and bolts of the XMPP(or Jabber) and how we can make use of it in the context of Internet-of-Things(IoT). This blog post will demonstrate a sample implementation on XMPP using unofficial official IoT XEPs(XMPP Extensions). These XMPP extensions are still in...

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XMPP/Jabber for IoT Devices - Part 1

Recently we implemented XMPP (or Jabber) support into our IoT Device Management Framework. Ideally this provides near realtime communication between multiple devices over multiple networks. The architecture of the Jabber server is conforms to an email server(server.com) where XMPP clients conforms...

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Setting JAVA_HOME on Raspberry Pi

The new Raspbian build comes with Java 1.8 pre-installed. You can check the current java version by issuing following command; java -version java version "1.8.0" Java(TM) SE Runtime Environment (build 1.8.0-b132) Java HotSpot(TM) Client VM (build 25.0-b70, mixed mode) In order to set environment...

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Compiling ARM1176 for QEMU Raspberry Pi Emulation Kernel

This is referred from this forum post and optimized for Mac OSX users. This blog post will show you how to compile a QEMU-ready Linux kernel for the ARM1176JZF-S CPU used by the Raspberry Pi. If you want to skip all of this and just have a kernel you can use, you can download 3.18 kernel here. 1....

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Voice Recognition with Arduino

Recently I built a voice recognition circuit using Arduino. Voice recognition is not that easy with Arduino, It requires more processing and voice analyzing power. Keep in mind that all you have to deal with is a ATMega328P microcontroller running on 16MHz. That's why some modules like BitVoicer is...

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Coding more than Four `7segment` display panels on Arduino

Recently I coded a seven segment display for a friend of mine. Hope this might be helpful for wiring purposes. My task was to correctly display 5 digit number on 5 `seven segments`. So, most of the examples out there including this module support only up to 4 segments. So, I wrote my own code from...

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ATMega328P Malfunctioning

As i mentioned in my previous post, I ordered a chinese Arduino UNO R3 version board. It is pretty cool compared to genuine more additional features. But you'd not get default LED light connected to the pin 13 and Tx Rx LEDs. This is my experience with Arduino UNO R3 version board. Since I already...

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Arduino Introduction

I recently started developing with Arduino. In the old days we had to develop everything from the scratch. Arduino and other DIY kits makes it lot easier. If you are in two minds whether to buy Arduino or `Raspberry Pi`. I would simply say, If your project is something to do with hardware Arduino is...

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