Connect android to teensy via Bluetooth

And you can do it by making your own free app. Yes, you can easily control you teensy from your android device using Bluetooth. And, its cheap. I recently moved over from an iphone to the Android OS. I did this for many reasons, but primarily I was extremely dissatisfied with the locked down nature of the standard iphone/apple experience. I wanted control over the phone as an interface with my microelectronics projects. Android allows […]

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UTFT touchscreen SD file selection buttons with Teensy 3

So, I am hoping to use this system with my light painting kit. I want to be able to select a file from the sd card on the fly. To do this, I have made a sketch using Henning Karlsen’s UTFT library. But, I have adapted it to make on the fly buttons, so that all files on the sd card can be scrolled through, shown on the screen, and then selected at the touch […]

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Go take a look at Teensy microcontrollers

If you haven’t yet done it, go and have a look at the Teensy micro controller from PJRC. Its powerful, small, has lots of libraries available and, one very large bonus, a very friendly developer and user community forum. You will usually find someone who can point you in the right direction or perhaps even provide an answer to something that has been holding your dev back. I am not associated with teensy, I just […]

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not all pixel poi leds are equal – beware

I have been through a number of different spec leds over the last few years, and this a warning, beware, not all led pixels are equal. Look at the specs and do your research as they are manufactured for different reasons, and so have different specs and limitations. Some, like the WS2811, are manufactured in high density strips and are really easy to construct into batons, BUT… they have a timing issue and colour set […]

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Artnet (art-net) and micro controllers

I finally have artnet working with the Teensy 3 micro controller / development board. The result is a simple and cost effective way to control led lighting from your computer via the ethernet cable output. Using this set up you can control hundreds of leds, output video to leds, or whatever. You will need to use some software on your computer as an artnet output, I use pixelcontroller. This is free and robust, and fast […]

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pixel poi, visual poi, graphic poi are all the same thing

I have had a few people ask me about the difference between pixel poi, graphic poi and visual poi. Well, they are all names for the same thing. However, the term pixel poi is a registered trade mark of the Feeding the Fish performance group, as “pixel-poi” with a hyphen I believe. Thats why other companies selling and using these types of poi use different names. Here’s an image of a pixel poi, graphic poi, […]

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Wireless control of Led matrix using Teensy 3.0 and adafruit cc3000

This is a small project to control an led matrix using wifi, set up to go over a local router. The idea is simply to have a system whereby the led matrix will play animations from software running on a computer that is further away from the led matrix, or where using cables is not wanted. The set up currently works for an array of 8 by 30 leds and uses the freeware pixelcontroller software: […]

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light painting

Light painting seems a logical progression to the led pov sticks. As the WS2811 leds aren’t too good for the POV work, I thought that I may as well use them for something else. They are fine for use in slower moving projects and static projects so I put together a light staff for light painting: Take a look at the light painting page where I will post some images and a description  

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