Step 4: Wiring It Up - Data From the Arduino

Each NeoMatrix board has a data-in pad on one corner and a data-out pad on the opposite corner. The matrices accept a 5v signal via a single wire protocol (you don't need to know much about this to get started - the NeoPixel NeoMatrix code libraries do the heavy lifting here). When tiling, data is passed between matrices from data-out to data-in. One thing to note is the resistor placed before the first matrix's data-in - this supposedly prevents voltage spikes from burning out the first pixel.

1) Soldered a resistor directly to the data input pad on one of the matrices, soldered a wire onto that resistor. This is the wire that connects to whatever pin is outputting data on from you Arduino.

2) Wired the data out pad of the first matrix to the data in pad of the second matrix.

3) Ditto from the second matrix to the third

2) Soldered a wire to the ground pad adjacent to the data in pad. This wire will go to the ground pin on the Arduino.

3) Wired all grounds pads together.

<p>Hey ... gud work !</p><p>How to get this working with Dot Matrix Displays that are available in market ?</p><p>They are equipped with 16-pin header for connection to controller board .</p>
Been looking for something like for awhile. Wanted to something bigger. 3x3 foot picture frame but this is a great start to get me going! Thanks will try
<p>Nice job! How did you put the youyube videos with autoplay and with no border and no controls?</p>
<p>Thanks! I followed this steps in this very helpful Instructable - https://www.instructables.com/id/Using-Youtube-psuedo-GIFs-to-an-Instructable/ :)</p>
<p>Woah! I want to make something similar in my high TV cabinet! I don't know if you read my mind or I read your instructable before! ;-)</p><p>Many thanks for the ideas and solutions!</p>
<p>Might be more tempted to hook it to a parallel port of a headless server.</p>
<p>not sure I follow? you mean connect the LED boards directly to the server?</p>
<p>I got a couple of graphical VFDs out of some old medical equipment (<strong>Noritake GU256x64-39)</strong> I've been meaning to do something like this. Also pretty simple with a USB cash register pole</p>
Want this!!!!!
<p>you should make one!</p>
If I could high five you I would.
<p>haha thanks!</p>

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