Tag Archives: RGB

Chromatron – Wifi Pixel Controller

Chromatron is an open source Wifi pixel controller designed to make LED pixel projects easy and fun.

Hi, I’m Jeremy! I’ve designed a toolkit for making art with LED pixel strips, and I’d like to share it with you! Chromatron takes custom designed hardware and feature-packed firmware, sprinkles it with some Python, and serves up a delicious new platform to help you transform your world into a psychedelic dreamscape.

HOW-TO: Music Reactive Desk Light

@ natural-nerd.com build a sound reacting LED light using Arduino:

Hi! In this build we’ll make a good looking light that dances to all sounds and music, using simple components and some basic Arduino programming. It makes an awesome effect while standing on the desk when gaming, playing music, and anything else that makes sound really. Let’s get going!

HOW-TO: Music Reactive Desk Light – [Link]

RASPILIGHT: an open project for Ambilight TV effect

LucaBellan @ open-electronics.org  re-created the Ambilight TV effect on any other TV using Raspberry and Kodi. He writes:

The screen’s edges are divided into logic sectors, and each sector is associated with a specific LED and, by making a color average of the pixels, you can find the color to set to be reproduced by the LEDs; this operation is repeated for all the LEDs mounted on the TV and all of this is repeated hundreds of time per second in order to provide synchronicity and maximum smoothness to the colors projected around the TV.

With RaspiLight we can re-create this technology and apply it to any flat-screen TV, but there’s more: even when the TV is off, we can control the system through an Android or iOS app and create static or dynamic light effects and make the TV an animated lighting point and not just a simple lighting piece of furniture.

RASPILIGHT: an open project for Ambilight TV effect – [Link]

The Aurora Boxealis – A Color Sensing and Mirroring Project

Besides looking damned good on an otherwise bland and ordinary desk, this project is about more than just being attention grabbing eye candy.  It’s about demonstrating a small portion of our single board computer capabilities by hooking up a color sensor, RGB light strip, and enclosing it in a nice looking wooden enclosure.  We’re dubbing it the “aurora boxealis”, and it’s made to stand out from the crowd at trade shows and provide a fun, interactive way to professionally demonstrate an interesting sensor, in this case a color sensor.  Grabbing a color swatch from the table and placing it on the top of the box will trigger the lights to mirror that color.

The Aurora Boxealis – A Color Sensing and Mirroring Project – [Link]

Color sensor achieves high dynamic range with auto exposure

Massimo Gottardi@ edn.com writes:

The Design Idea in Figure 1 is a color detector capable of generating an RGB triplet over a high dynamic range, a useful attribute for machine vision applications. The circuit implements auto-exposure control to achieve this. Thus, RGB values for a subject are invariant over a range of light intensity.

Color sensor achieves high dynamic range with auto exposure – [Link]

16×32 RGB Matrix Panel Driver Arduino Shield

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Raj @ embedded-lab.com has revised his RGB Matrix Display Shield to an improved version.

The shield now also carries the DS1307 RTC chip on board along with a CR1220 coin cell battery holder on the back. It is applicable for driving popular 16×32 RGB matrix panels with HUB75 (8×2 IDC) connectors. Row and column driver circuits are already built on the back side of these matrix panel. The data and control signal pins for driving rows and columns are accessible through the HUB75 connector. It requires 12 digital I/O pins of Arduino Uno for full color control.

16×32 RGB Matrix Panel Driver Arduino Shield – [Link]

Arduino Proximity Alarm

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Lucas Reed @ instructables.com has build a proximity alarm using Arduino and an ultrasonic sensor from Parallax. If a nearby object is approaching then the alarm will sound and an RGB LED will light up. He writes:

An ultrasonic rangefinder and Arduino microcontroller will check for nearby objects and if need be, alert you with a piezo-buzzer and RGB LED. Learn about these components using electronics lab simulations and eventually design, code, simulate, and build the proximity alarm itself! This is great if you are looking for a quick project to learn about digital electronics.

Arduino Proximity Alarm – [Link]

WiFiRGB – A WiFi-enabled RGB high-power LED

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Tom blogged about his WiFi/Browser controlled RGB LED project:

Features

Simple hardware, using pre-fabricated modules

Controls an RGB LED via any recent browser, any operating system

WiFi credentials can be configured via browser

Software is written as an Arduino sketch

WiFiRGB – A WiFi-enabled RGB high-power LED – [Link]

 

ESP8266 RGB Color Picker

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In this project, you’re going to build a web server with an ESP8266 to remotely control an RGB LED. This project is called ESP8266 RGB Color Picker.

ESP8266 RGB Color Picker – [Link]

DIY Arduino RGB LED Controller Shield

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One of our visitors tipped us with his latest project, an Arduino RGB LED controller using low Rds-on MOSFETS, designed in Solo-PCB.

This Arduino shield is designed to drive RGB (Red Green Blue) LED strips by using PWM (Pulse Width Modulation) method. It can brighten up and down each color independently by changing the duty cycle of PWM.You can produce any color by mixing the different percentage of colors. The endless turn rotary encoder on the board allows the user select the channel and change its brightness. Low Rds-on resistance MOSFETs, which are the switching elements, generate very low heat dissipation even used with large number of LEDs.

DIY Arduino RGB LED Controller Shield – [Link]