Adafruit PiTFT – 2.8″ Touchscreen Display for Raspberry Pi

Overview Is this not the cutest little display for the Raspberry Pi? It features a 2.8" display with 320x240 16-bit color pixels and a resistive touch overlay. The plate uses the high speed SPI interface on the Pi and can use the mini display as a console, X window port, displaying images or video etc. Best of all it plugs right in on top! It's designed to fit nicely onto the Pi Model A or B but also works ...

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Controlling a RGB LED attached to a Raspberry Pi through Android

Project Description I need to be able to control turning on and off an RGB LED utilizing the Raspberry Pi.  I also should be able to turn it on and off using an Android device. Design The design is made up to utilize three different components: Raspberry Pi / LED Hardware, Web Service, and Android device. Raspberry Pi All the gear that was used was: Raspberry Pi – Model B 5mm High Brightness Full-Color LED ...

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Using a shift register with Raspberry Pi

This instructable will attempt to explain, in simple terms, what a shift register is, and how you can use it with the Raspberry Pi to expand the GPIO port by running eight outputs with just four GPIO ports. To start with, what is a shift register?  Wikipedia has a technical definition of shift registers, but in a nut shell, shift registers let you take serial input (one bit after the other), and output it i ...

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Raspberry Pi 3×3 LED Cube

About a month ago my dad bought a soldering iron and we both learnt to solder by making an LED cube controlled by an Arduino. It was a cool project to show my friends and really easy to build so I have decided to make one for the Raspberry Pi and an Adafruit Cobbler because there are not many LED cubes for the Pi. Bits needed Breadboard 27 LEDs Soldering iron and solder Wires 3 transistors Any Raspberry Pi ...

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Debug GPIO with LED

During the daily device driver development routine, we often need to understand the behavior of the GPIO pins to understand if there is I2C traffic or if our driver is handling the coming interrupts and so on. Sometimes is not enough to mount the debugfs interfaces and read out the values or cat/grep the /proc/interrupts file because we may loose the instant when the GPIO changes its status or perhaps we ne ...

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Simple GPIO Control using Pi4J

The following example demonstrates the simple control of a GPIO pin on the Raspberry Pi. Source Code The source code for this example is included in the github repository: https://github.com/Pi4J/pi4j/tree/master/pi4j-example/src/main/java/ControlGpioExample.java /* * #%L * ********************************************************************** * ORGANIZATION : Pi4J * PROJECT : Pi4J :: Java Examples * FILENA ...

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Use Itead SDK to Drive a 1602 LED

Itead Studio made an SDK for linux system of Allwinner A10/20 chip before, which provided users with the underlying hardware driver interface for quick development of upper software, thus those who are not familiar with hardware can easily make a variety of creative applications combined with hardware and software. Now, Itead SDK has been ported to Raspberry Pi, thus Raspberry Pi users can experience the co ...

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Using the Raspberry Pi’s GPIO Pins to Drive an LED

Scope: To use the Raspberry Pi’s GPIO Pins to turn an LED on and off, and to introduce the basic GPIO functionality of the pi. BOM: – 1 raspberry pi (I’m using rev B) with Raspbian OS installed – 1 LED – 1 1kohm current limiting resistor – Breadboard – Hookup wire – Example program Instructions: – Build the example circuit on a breadboard, connecting the long leg of the LED to GPIO Pin 7, the short leg of t ...

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Raspberry Pi Christmas Tree Light Show

This project involves using a Raspberry Pi to drive 8 AC outlets which are connected to Christmas Tree light sets. The AC lights are simple one color strands of lights, but to give a more dynamic range to the light show there is also a 25 programmable RGB LED star. One of the benefits of using the Raspberry Pi instead of an Arduino controller is that I can drive the audio out of the Raspberry Pi to have the ...

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Raspberry Pi – Model B+ Setup

The Raspberry Pi Model B+ is a credit card sized computer with a Micro SD Card as a hard drive and 512MB of RAM. You install a Linux based software onto the SD Card and insert it to the bottom of the Pi. There are GPIO ports on the right hand side of the Pi that can be hooked up to LEDs, motors, sensors, etc. You can also program the Pi to do anything you want. Have Fun and See What You Can Do! Step 1: Gath ...

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