This instructable uses circuit knitting and is written specifically for knitters. We’ll cover how to create a circuit that uses blue and yellow LEDs, with instructions for hand and machine knitting. Electronic machine users can download the pattern file below to CNC print the knitting. (“Rose the Riveter” self-portrait with cuff by Angeleah Daidone. copyright […]
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
Controlling a RGB LED attached to a Raspberry Pi through Android Read More »
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
Raspberry Pi 3×3 LED Cube Read More »
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
Debug GPIO with LED Read More »
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
Use Itead SDK to Drive a 1602 LED Read More »
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
Using the Raspberry Pi’s GPIO Pins to Drive an LED Read More »
Plessey Semiconductor seems to be gearing up for increased production of its GaN-on-silicon LED devices. Plymouth-based Plessey has upgraded its production facility by buying the latest Temescal UEFC-4900 material deposition system from Ferrotec. Plessey manufactures LEDs on 6-inch wafers using a GaN-on-silicon process which it claims is cost-effective because it uses standard semiconductor manufacturing techniques.
Plessey prepares for LED lighting push Read More »
At LightFair, LED Engin will demonstrate a 2200 lm light engine that has halogen-style dimming from 1,600K to 3,000K as well as colour temperature (CCT) tuning between 2,100K and 4,300K. Called LuxiTune Generation 3.0 and aimed at replacing 120W halogen lamps, “both tuning curves track the black body curve closely and light intensity [flux] is
Lightfair: Temp-tuneable LED light engine dims to 0.5% Read More »
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
AM03127 LED marquee + Arduino + Bluetooth = RaspberryPi remote control Read More »
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
Hardware button and LED to control association in wireless networks Read More »
