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Archive for the ‘LEDs’ Category

Lab LED constant current controller board

Friday, December 18th, 2015

Ladvien blogged about his Lab LED constant current controller board project he made using DirtyBoard PCBs: A little lab controller PCB I'm working on. It centers around four high-power constant current circuits meant to be driven by an Atmega328's PWM. I hate working on anything mechanical in dim light; comes...

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Posted in DirtyPCBs.com, LEDs | 3 Comments »

Replacement LED driver for AN6877

Friday, December 18th, 2015

Dilshan Jayakody 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...

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Posted in LEDs | 1 Comment »

A connected lamp to wake me up

Friday, October 9th, 2015

Limpkin writes, "I've always wanted to play with these 10W RGB LEDs! So for some reason I bought 2 IKEA lamps at a flea market. As IKEA furniture has a long history of being hacker-friendly, I figured they shouldn't be an exception to the rule. My plan? Fit a few...

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Posted in LEDs | No Comments »

Cool room lights

Wednesday, September 30th, 2015

Dmitry Grinberg writes, "Lighting a room is always a complicated task. This is especially true if you're an engineer. You see, we all love blinking lights, RGB LEDs, really any combination of those things. When it came time to figure out the ligting situation for my room, I immediately knew...

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Posted in DIY, LEDs | 4 Comments »

ESP8266 LED display

Thursday, September 24th, 2015

Evan writes: This is my proof-of-concept for using mqtt with the esp8266.  I saw this LED display sitting around and I couldn’t imagine why no one was using it, the answer was no one knew how to talk to it.  Easy, I think.  Looking at the board it’s just an...

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Posted in LEDs, wireless | No Comments »

Fake TV security light

Monday, September 14th, 2015

Marcus Jenkins writes, "I made this gadget which steps up the game from leaving a light on at home when you're out. Place in near a window to make it look like somebody's at home watching TV. " Project details at Marcus Jenkins' site. Via the contact form.

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Posted in DIY, LEDs | 1 Comment »

LED POV fan update

Monday, July 6th, 2015

Zach writes: I first posted on how to reprogram a "Programmable Message Fan: Model 45 Series" POV fan a few years ago, and the code I posted no longer works with the current versions of the Octave and Arduino software.  The original post still describes how the fan works and...

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Posted in LEDs | No Comments »

DIY double sided 60W LED UV radiation unit with vacuum pump

Friday, June 26th, 2015

Kurt Skauen has been working on a DIY 1188 LED dual sided UV radiation unit: The UV exposure unit is controlled by an ATmega328P microcontroller and have the following features: Single and double sided exposure. Each side radiated by a 594LEDs / 30W UV LED panel (The unit has a...

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Posted in DIY, LEDs | 10 Comments »

1-Pixel Pacman

Monday, June 1st, 2015

Mike Szczys of Hackaday built 1-Pixel Pacman and wrote a blog post detailing its assembly: I usually see retro-gaming projects using tiny screens with a fair number of pixels (64×64) but what I really like is the look of making every pixel count. With this in mind I built 1-Pixel Pac-Man, the...

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Posted in LEDs | 1 Comment »

10×5 RGB LED Matrix with only 5 IO pins

Monday, April 27th, 2015

Here's an instructable on LED Matrix with custom code/software by Ole_L: This is the software which you need: -Arduino -Processing Flash the software to your Arduino and open the processing project with... Processing! Now you should change the line "String portName = "/dev/ttyACM~";" to your Serial port, on WINDOWS "String portName...

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Posted in Arduino, DIY, LEDs | 4 Comments »

Graphic equalizer display using ESP8266-12, MSGEQ7 and WS2812

Friday, April 17th, 2015

Amir Avni made a graphic equalizer display using ESP8266-12, MSGEQ7 and WS2812: Finally, I've created a this project: An equalizer display controlled by ESP8266 with the NodeMCU firmware, where the equalizer colors are controlled via WiFi Project info at whatimadetoday site. Check out the video after the break. (more…)

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Posted in Arduino, LEDs, wireless | No Comments »

ESP8266 WiFi LED dimmer Part 8 of X: Version 2 of the PCB design

Monday, April 13th, 2015

Quindor blogged about his ESP8266 WiFi LED dimmer project with DirtyPCBs: With the help of kind internet folks I was able to get a fritzing part for the new voltage converter I wanted to use to try and make a smaller board. A few weeks ago I sent my new 'panalized' design...

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Posted in DirtyPCBs.com, LEDs, wireless | No Comments »

LED logger v3

Monday, March 16th, 2015

Bogdan of Electro Bob built a LED logger v3, that is available on github: In short:  16 LED channels are measured, one is kept for control of the sensor. For each LED the power supply and current are measured. The temperature of the aluminium plate is measured as well. In total there...

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Posted in AVR, LEDs | No Comments »

8×8 RGB LED array with a Raspberry Pi

Thursday, February 26th, 2015

Bob Davis has been working on an 8x8 RGB LED array with a Raspberry Pi project: I have been working on a book of Raspberry Pi projects. One of the projects is an 8x8 three color LED array. I picked up some more of them on eBay lately and they had a...

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Posted in LEDs, R-Pi | No Comments »

Arduino equipped inline sensor skates

Tuesday, February 17th, 2015

Anurag Mishra writes, Recently I bought a new pair of Inline Skates. So an idea struck my mind. I modified my skates to give me some results. I wanted to measure the speed with which I am skating and if I get to know the surrounding conditions, that would be...

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Posted in Arduino, code, LEDs, open source, sensors | No Comments »

WiFi LED Light (ESP8266 + WS2812B + Lua)

Wednesday, February 11th, 2015

Markus Gritsch shared his WiFi LED light project in the forum: I built a prototype for a WiFi controllable LED light, using the popular ESP8266 module running the NodeMCU firmware [1]. To allow controlling the WS2812B LEDs from Lua, I extended the firmware with a bit of C code Check out the video...

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Posted in LEDs, project logs, wireless | 1 Comment »

PWM Based LED Driver

Monday, December 22nd, 2014

A followup to the constant current driver for a high power LED post, Elmars writes: If anybody is interesed, I have posed a follow up to this original post with a simple PWM LED driver, adding an ATtiny85 mCU. The post includes schematic, board layout and code for the ATtiny85. I...

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Posted in LEDs | 12 Comments »

Running LED dice

Tuesday, December 16th, 2014

Raj over at Embedded Lab has published a new build, a running LED dice using PIC12LF1822 microcontroller: This project is about a similar LED dice but with a slightly different output form. It uses 6 LEDs which are arranged in a circular pattern and are labeled 1 through 6. They create a...

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Posted in LEDs | 1 Comment »

Build a 16 million color WiFi-controlled LED lamp

Sunday, December 7th, 2014

Tom Van den Bon and Sebastian Schocke of Binary Space, a makerspace in the Vaal Triangle, have put together this build challenge for their members. For December at Binary Space we wanted to do something a cheerful and colourful. We got together to design and build a low power LED...

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Posted in 3D fabrication, how-to, LEDs, open source | No Comments »

Building a 3-channel, high power RGB LED driver

Wednesday, December 3rd, 2014

Francesco Truzzi published a new build, a 3-channel (RGB) LED driver: I built another board, which is a 3-channel (RGB) LED driver based on an inexpensive chipset called PT4115 (you can find them on eBay or Aliexpress). The circuit is very simple and looks like Sparkfun’s PicoBuck. However, I used beefier components...

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Posted in DIY, LEDs | No Comments »

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  • Paul Campbell: I'm old enough that I started programming with punched cards .... each card had a sequence number in the last few characters. A friend once...
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