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Wall Led Matrix

3ft x 3ft with diffused acrylic enclosure

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A led matrix on a larger scale. 64 pixels each controlled by an Attiny85 chip.

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Abhay Ajeet wrote 06/21/2018 at 19:48 point

This is quite awesome! good work! keep up the good work!

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suicidal.banana wrote 02/06/2015 at 23:55 point

Pretty sure you forgot this link http://www.instructables.com/id/Ghetto-Pixels-Building-an-open-source-BlinkM/?ALLSTEPS or am i mistaken?

(not that theres anything wrong with building on work of others, not at all, but a little more info about how you got to your result, or perhaps even a link to a tutorial you might've followed goes a long way)

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Kelly wrote 02/07/2015 at 01:13 point

Troll? I just signed up for this site. I added a project I worked on. I followed many guides in building it. I didn't post any of those, or any details about the project. With your comment, I'm probably less likely to do so. I never made any statements regarding a new novel approaching to designing a LED matrix. Don't be a dick.

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davedarko wrote 02/07/2015 at 01:27 point

I think that there is a valid point in linking to projects of others that were probably used as a base for your project and giving some more details about it, as a way to share knowledge. I used exactly the instructables.com link to get my project done. He didn't accuse you of stealing, but reminding to post some more details and links that others can follow to recreate this, if they want. You could create logs about different aspects of this, like the schematics or what you have used to control all those pixels.

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Kelly wrote 02/07/2015 at 01:40 point

I didn't fill out any additional information, just photos. I didn't know there was such rigorous standards for book-keeping on this site.

I'm sure it's helpful to post everything you researched while doing a project, but he called me out saying that I "forgot" something. Should i cite the work of every single technology and resource that i used? This is silly.

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davedarko wrote 02/07/2015 at 02:02 point

Please don't be offended but let me say that posting 4 pictures, a link and a one liner is not equal to using this site to its full potential. It's a good start and it would be great if you could add all informations you can recollect. Nobody expects you to have written 20 logs and a 15 steps instruction set when posting your project, but telling us about your motivation and inspiration is a good opener.

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Kelly wrote 02/06/2015 at 22:48 point

Yea, you'll need some pullup resistors connecting to the i2c master. I forget the exact value of the ones I used. If I had to do this again, I'd probably just use something the newer WS2801. I2c isn't really made for wire this long. SPI is little safer at longer distances.

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davedarko wrote 02/07/2015 at 00:19 point

I had distances of about 40cm between them and I think the wires I used (eBay rgb cables) were too thick. IIC seems to handle things differently on the hardware side as well.

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davedarko wrote 02/06/2015 at 22:37 point

Interesting! I did that once with 15 of those but they all got stuck at one point. How did you connect them and did you do something like adding resistors to the IIC channel?

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