Arduino/Raspberry Pi 2 LED Matrices

Does anyone know if I can use a single Arduino or Raspberry Pi to control two 32x32 LED matrices as sold on the Adafruit website? Here is a tutorial where you can wire the 32x32 matrix. Ideally, I'd like to be able to control them separately, but if the wiring only allows simultaneous control of the two, then that is ok. Thank you for your time. Do you have a specific question that isn't answered by the tut ...

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A Raspberry Pi Build Light for TeamCity in Mono

Some Background… After I bought my Raspberry Pi I went through a little period of uncertainty that most other owners have, asking myself “how do I make this thing useful?” It didn’t take long before one of my colleagues created a GitHub repository for a little project that had been sitting around for a while – TeamFlash. TeamFlash is a build light client app for TeamCity. It monitors the build server to fin ...

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Building a Raspberry Pi Cluster – Part 2

The Grand Finale In a previous post on Building a Raspberry Pi Cluster, I wrote about how we built a cluster  using several Raspberry Pis. This cluster was used for hosting the WSO2Con App. In this post we will take a look at the finishing touches & some interesting information from WSO2Con 2013. The project was unveiled at WSO2Con 2013, London & was an instant hit. The team received many kudos from ...

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ICStation Heart-shaped Colourful Dazzle Light DIY Kit

1. The circuit description This circuit is consist of the STC89C52 minimum main system and 32 colorful LED display components. It uses the STC89C52 Microcontrollers as the control chip and drives 32 I/0 to control the 32 F5 colorful LED.( We have finished the Microcontroller program for the DIY Kit) 2. Electrical parameters Working voltage: DC 5V PCB board size: 96 * 88MM LED color: red (the default color i ...

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Raspberry Pi Binary LED Clock

Binary clocks show the time in an unconventional format. They display the hours, minutes and sometimes even seconds as numbers represented in the binary numeral system. Binary clocks and binary watches have grown quite popular today. More and more people work in IT and become familiar with the binary numbers, the native language of our computers. Most who understand binary notation, consider it clean, simpl ...

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Raspberry Pi Spectrum Analyzer with RGB LED Strip and Python

Looking for a first project to try out on a Raspberry Pi, I though what better than a Spectrum Analyzer? (Sometimes this display is erroneously referred to as a graphic equalizer--that let's you change the sound, not display it) I was able to get it doing 2048pt FFTs and decoding mp3s in real time, and while that shouldn't be hard on a Pi considering plenty of 8bit uCs have been made to do real time FFTs, e ...

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Creating a “Blinking LED” project for Raspberry PI

This tutorial demonstrates how to attach a LED to the expansion connector on your Raspberry PI and to make it blink with a simple C++ program. First of all, in order to programmatically switch a LED on and off we need to connect it between a general-purpose input/output pin (GPIO) and the ground. Then we need to change the state of the pin between 1 and 0 to switch the LED on and off. The basic schematics i ...

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LED Blinking with Raspberry Pi

One of the  classic electronic analogy to "Hello World"  is to make an LED blink. Raspberry Pi has 8 General Purpose Input/Output  pins( 4,17,18,21,22,23,24,25)  which can be configured as input/output and turned on/off via software.In this Instructable I will be using python to control the LED, as coding in python is very simple yet it's very powerful. RPi.GPIO Python library is used to control the LED fro ...

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Blinking LED using 8051

This is the first project regarding 8051 and of course one of the simplest, blinking LED using 8051. The microcontroller used here is AT89S51 In the circuit, push button switch S1, capacitor C3 and resistor R3 forms the reset circuitry. When S1 is pressed, voltage at the reset pin (pin9) goes high and this resets the chip. C1, C2 and X1 are related to the on chip oscillator which produces the required clock ...

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Touch Display for Raspberry Pi

We add to Raspberry Pi a TFT touch screen to display the system console, movies and favorite photos or control a relay board … at your fingertips, literally! To avoid using an HDMI monitor the cost well above that of Raspberry Pi, in previous articles we have always gone the way of connecting remotely to the microcomputer, using tools such as Putty and WinSCP. This approach has always bound to use Raspberry ...

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