Category Archives: LEDs

MIC4811: High Current 6 Channel Linear WLED Driver with DAM™ and Ultra Fast PWM™ Control

Micrel has announced the availability of the MIC4811 High Current 6 Channel Linear WLED Driver with DAM™ and Ultra Fast PWM™ Control. The MIC4811/MIC4812 are high efficiency linear White LED (WLED) drivers designed to drive up to six high current WLEDs for signage lighting. The MIC4811/MIC4812 provide the highest possible efficiency at low source voltages […]

IR LED speed camera license plate blocker

Siliconfish used to build IR cameras for a living, so he knows something about the effects light of various IR wavelengths can have on a camera. When his town installed photo cameras on the traffic lights, he decided to experiment with an array of IR LEDs mounted on a license plate frame to see what […]

Pachube controlled RGB LED

Andy from the UK was looking to build a simple proof of concept project which would integrate an Arduino and ENC28J60 based ethernet shield (or a Nanode) to connect with his Pachube account to control an RGB LED. He says: This article describes a simple application to demonstrate the ENC28J60 EtherShield library. It can be […]

PIR controlled LED matrix display

Sometimes it’s handy to have a message display when persons enter a specific area. Having the message appear only when someone approaches brings more attention it, and can be useful for holiday displays, directions or warnings. In this project by Jer from Volts and Bytes, an Atmega8 is used to activate a Sure Electronics 0832 […]

Arduino MIDI RGB display interface

Here’s a MIDI keyboard interface project from SuLuLab. It uses an Arduino, MIDI Shield, addressable RGB LED strip based on chip HL1606, 5VDC 1.5A PSU for strip supply (USB port current is not enough), and the Arduino’s FastSPI_LED library. MIDI messages from the keyboard (real or simulated on PC) enter the MIDI Shield’s MIDI IN […]

Simple CPLD binary counter project

FlipThatBit released this video of a simple CPLD binary counter project. This is a good beginner’s Verilog project, requiring a minimum number of external components, and providing an immediate visual result of your efforts. This was written for the XC9536XL CPLD on a homemade project board. It should work just fine on our XC9572XL Development […]

Lampduino 8×8 RGB matrix floor lamp

Lincomatic documented his Lampduino, an 8×8 RGB Matrix Floor lamp build. This past weekend, I finally finished building my 8×8 RGB matrix floor lamp.  I call it Lampduino.  A Processing sketch running on a host computer controls Lampduino via a USB connection.  When turned on without a computer, it automatically displays a soothing plasma simulation. […]

Control an LED with brainwaves and Arduino

Sean the Flex Guy has posted his basic experiments capturing brainwave data from the Neurosky Mindset BCI and conveying it to an Arduino. The readings are processed by the Arduino and displayed on an LED, in this case indicating the relative attention level of the participant. Sean has published the ActionScript 3.0 API he created […]

ITead Studio Colorduino preview

lincomatic wrote a review of ITead’s Colorduino, and also released an Arduino library that works with both the Colorduino and Itead’s Arduino RGB Matrix driver shield. ITead Studio kindly sent me a Colorduino for beta testing. The Colorduino was inspired by SeeedStudio’s Rainbowduino LED Driver Platform. Its form factor is very similar to that of […]

DOTKLOK: Arduino based digital clock

DOTKLOK by Andrew O’Malley is an open-source, hackable, Arduino-based digital clock that displays a series of unique time-telling animations. The passing of time is depicted with numbers and abstract/geometric patterns, including animations inspired by classic video games such as Pong, Tetris, Pacman, and Space Invaders. An optional “random mode” changes the animation each day at […]

TI intros 16-channel constant current LED driver

Texas Instruments has introduced the TLC59282, a 16-Channel Constant Current LED Driver with 4-Channel Grouped Delay. According to the datasheet, this 24-pin SSOP device allows control of each channel individually controlled via a simple serial communications protocol that is compatible with 3.3 V or 5 V CMOS logic levels, depending on the operating VCC. Once […]

Rainbowduino coffee table

Sawomedia is the winner of the Seeedstudio Rainbow Carnival 2010 design contest. The winning entry was a RGB coffeetable using a handsoldered 64 Superflux Pixelmatrix and the Rainbowduino LED driver platform. It uses a 9V PSU, but can also use battery power. The supporting structure is made mainly from recycled materials. Seeedstudio is also a […]

Laptop touchpad interfaced with Arduino

Here’s an interesting article showing how to interface a common laptop touchpad with an Arduino. Metku’s project connects the Data, Clock, +5 V and ground connections on the touchpad to Arduino Pins 5 and 6, and power connections. Sample code is included, and the Arduino/Wiring library provides the necessary codehooks. In the video they demonstrate […]

PROTOTYPE: Ethernet LED driver

We’re releasing a stalled or abandoned prototype every few days while Seeed Studio is on break. We put a lot of work into these projects, but they’re still missing major components and testing. If an abandoned project sparks your interest, we may have PCBs to get you started. The goal of this project is to […]