Attendance system using Raspberry Pi and NFC Tag reader

With my new toy Raspberry pi I've done several testing projects from instructables, adafruit etc. But after a while it became boring and I've started looking for something actually useful for me. My previous playground was my new phone several weeks ago which came with new feature NFC reading. Thought and thought together gave me idea for attendance system for our small (family) company using NFC tags. The ...

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LED Blinky in Lua on Raspberry Pi running Mihini on ArchLinux

After setting up Eclipse M2M toolchain for Raspberry Pi, I wanted to try out a simple lua script to blink LEDs using GPIOs. Here is the schematic and lua script for the same. I used the 3.3V available on RPi for powering the LEDs. 1 kiloohm resistors were used to limit the current passing through the LED. The cathodes of the LED were connected to drain the current into the GPIO pins. I used 4 LEDs connected ...

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AM03127 LED marquee + Arduino + Bluetooth = RaspberryPi remote control

After some days of soldering, testing and coding I am now able to control my LED marquee remotely via bluetooth from my Raspberry Pi. Using an Arduino Pro Mini (5V model) and the HC-05 module mentioned in my last blog post, I was able to mount all components inside the sign’s housing. Some features of the bluetooth enabled display: send messages to display (up to two messages with a length of 360 characters ...

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Hardware button and LED to control association in wireless networks

Almost all wireless technologies use some kind of association process to enable devices to join the network. Such a process is typically initiated by pressing a button on the network controller and by subsequently pressing another button on the device to associate. Software gateways, like Dog, cannot naturally support this press-and-join interaction and the association process is usually initiated by softwa ...

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Third Eye Visions

Lighting Up An Led Using Your Raspberry Pi and Python Once you've setup your Raspberry Pi according to my getting started tutorial, you are ready for your first real project. Let's light up an led using the Python programming language and the GPIO pins on your Raspberry Pi, hereafter called RPi. What You Will Learn: You will construct a basic electrical circuit and attach it to your RPi GPIO pins You will w ...

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Raspberry Pi driven 128×32 LED sign

This is a 128x32 pixel LED display built from 8 "P10" LED Panels and a Raspberry Pi board. The code its running is takes UDP data from another computer and displays the pixels in either one or two bits per pixel. The sign is pictured here being driven from an empeg mp3 player. It can be driven by anything with ethernet (a network port). The sign is constructed from wood, its about 1.3m wide. It has a matchi ...

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DIY Stripboard/Veroboard Enclosure for Raspberry Pi (Part 2)

16-LED Stripboard Top Schematics, Soldering, and Testing I had decided to design the top board of the enclosure with several LEDs, 3 LEDs on both side, and a Raspberry fruit (6 red LED) and 2 leaves (4 green LED) in the middle. Before getting started, I did some experiment on a breadboard, and quickly discovered that 5V LEDs can’t simply be put in series (2 LEDs require 10V, 6 LEDs 30V and so on), so I had ...

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Control a Relay From Anywhere Using the Raspberry Pi

If you found this article after doing a search on Google, welcome! On this website you will find plenty of content around DIY home automation using open-source hardware. Enjoy the article! I have been asked a lot about writing tutorials using the Raspberry Pi for home automation, as well as how to access your home automation systems from anywhere. And this is exactly what I will show you in this tutorial: y ...

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Raspberry Pi: 3x3x3 LED Cube

If you do a web search for LED cubes, you will notice that they have been built so many times and anything less than 8x8x8 is a bit of a waste of time. Knowing all of this, and basically because I am bored out of my mind, I decided to go ahead and build one with old parts lying around at home. I ended up with a small 3x3x3 LED cube connected to my Raspberry Pi. I chose 3x3x3 because no extra hardware is nee ...

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Raspberry Pi Lamp LAMP Server

I was using a Raspberry Pi as a LAMP server.  I also needed a new lamp for more lighting.  My brain then decided I should combine the two, thus creating a Lamp LAMP server.  Fun and completely nerdy at the same time.  Here is how you can create your own. Step 1: Assembly Find a lamp with a clear glass or plastic body.  The whole point is to be able to see through the body so that you can view the Raspberry ...

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