Led category

SK6812 – a new intelligent RGB LED

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Tim discuss about a new RGB LED that appeared on the market:

During the last months, a new WS2812 alternative appeared on the market: The SK6812. I finally managed to get my hands on some of them to take a closer look. In most aspects these devices are basically clones of the WS2812. What is interesting however, is that the manufacturer came up with a couple of new variations of the stock 5050 RGB LED.

SK6812 – a new intelligent RGB LED – [Link]

PWM dimmer for RGB LED

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Lukas Fassler has designed and built a PWM dimmer for RGB LED:

In my last post I’ve described the design and construction of my LED dimmer project. This project here is similar but a bit more involved. It controls RGB LEDs so it can not only change the brightness but also the color of the light. Instead of a simple pot it used a pair of rotary encoders with push buttons. One controls the brightness, pushing its button turns the light on or off. The other changes the color, pushing its button toggles between color and white.

PWM dimmer for RGB LED – [Link]

RELATED POSTS

Large 8×8 LED Matrix Display

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jollifactory @ instructables.com has published a large 8×8 LED Matrix Display which is driven by a MAX7219 and Arduino.

For this project, we will be building a single color large LED matrix display which is made up of a few large 8×8 LED matrix modules daisy-chained together. Each of these 8×8 LED matrix modules is around 144mm x 144mm in size.

Large 8×8 LED Matrix Display – [Link]

The World’s Smallest 4x4x4 RGB LED Cube

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HariFun @ instructables.com has build the smallest 4x4x4 RGB LED cude which is less than 1 square inch in dimensions and uses 64 SMD RGB LEDs. The guide goes through the assembly and programming of the cude using an Arduino board.

The World’s Smallest 4x4x4 RGB LED Cube – [Link]

PWM dimmer for LED lighting

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Lukas Fassler has published a new project, a DIY PWM dimmer for LED lighting. The dimmer can handle 100W@12V and is controlled by a single potentiometer.

I have recently moved to a new apartment and was looking for a PWM dimmer to control some 12V LED strips. I thought that should be easy enough nowadays but it proved more difficult than I thought. All I found either didn’t meet my requirements, were uggly or expensive. So I decided to build my own, tailor-made to my needs.

PWM dimmer for LED lighting – [Link]

RELATED POSTS

MAGIC PIXEL – Bluetooth full color LED display

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MAGIC PIXEL is a full color LED display able to show animations, scrolling texts, and video from a PC or Mac. The display can also be controlled using an Android or iOS device via bluetooth interface.

Magic Pixel is a universal and handy Bluetooth LED display, which we’ve been developing with focus on ease of use and effectivity. It can be used for displaying advertisement, information or just for fun. Magic Pixel is an ideal solution where effective and dynamic visualization of information is required.

MAGIC PIXEL – Bluetooth full color LED display – [Link]

How to build your own 8×8 led matrix

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circuitspecialists.com has published a new guide on how to build your own 8×8 LED Matrix on a prototyping board. In a later guide they will show how to program it using an Arduino Compatible board.

Today we will be starting our adventure into the deeply complex, yet totally incredible world of LED Matrices. This post will be the first of an entire Arduino Matrix Programming series by Circuit Specialists.

How to build your own 8×8 led matrix – [Link]

Starling – WiFi enabled LED Display

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Starling is a modular, Open Source LED display with WiFi connectivity. It comes with a mobile app for easy configuration and usage and has hardware support for Bluetooth.

The LED matrix is driven by an Atmega8 microcontroller (MCU), instead of a standard ASIC. This provides a lot of flexibility in the firmware. The firmware detects and assigns IDs to newly plugged-in modules. The microcontroller also stores font tables; hence if ASCII is sent on the serial (UART) port of the MCU, ASCII is what will be displayed on the matrix. Since the firmware detects adjacent displays, it can easily decide if it needs to display static or scrolling text.

Starling – WiFi enabled LED Display – [Link]

Replacement LED driver for AN6877

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Dilshan Jayakody has designed a board to replace AN6877 base LED drivers using discreet transistors. He writes:

AN6877 is linear AF level meter IC produced by Panasonic and it is commonly found on many audio equipment. This chip is no longer manufactured by Panasonic and finding replacement chip for AN6877 is also quiet difficult.
The circuit described in this article is design to replace AN6877 base LED drivers and it is based on commonly available components. This replacement LED driver is design using 10, MMBT3904/2N3904 transistors and it can easily modify to get necessary number of outputs.

Replacement LED driver for AN6877 – [Link]

Fake TV Security Light

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RonM9 @ instructables.com has build a fake led TV security light based on Arduino and NeoPixel WS2812 LED ring.

Fast & Easy Fake-TV Light module built for under $5; with enhanced features. With the use of this device you can go on vacation leaving your home with a lived in appearance and thus an added layer of security. “I’m up and I am a night owl … or perhaps asleep on the coach in front of the TV, ready to be awakened.”

Fake TV Security Light – [Link]