TinyMatrix

A Tiny Matrix, also called e-jewel, is a little electronic Jewel that changes animations every time you press the button.

Programming the ATTINY4313

In order to program the AT TINY 4313 you first need to install the ATTiny core in Arduino 1.6.4.

You can do that by following [this tutorial] (https://github.com/SpenceKonde/ATTinyCore)

To connect the ATTINY to the Arduino board perhaps you can build [your own shield] (http://www.instructables.com/id/Arduino-ATtiny2313-Programming-Shield/step2/Prototype-and-Pinout/).

Now you can load Arduino's sketches.

Loading sketches

In this repository you will find an Arduino sketch to load some animation (Arduino code)

and a Processing sketch to create new ones (Processing code).

This last sketch will print on the console the code that you can copy and paste in Arduino.

To create new animations you have to play the processing program.

A window like this will open

Then you just draw your animation frame by frame.

To save a new frame press 's', and when you are done press 'a' so you get the number of frames and the complete code.

Now copy what Processing printed to the console

and paste it in the Arduino sketch in the images.h file

now in the void loop section of the Arduino sketch create a new 'case' in the switch function

now you can upload the code to the ATTINY

and you are done!

Creating the jewel

You can download the .dxf files from [here] (https://github.com/FablabTorino/tinyMatrix/tree/master/design/DXF) or you

can draw your own, just remember to use a 6mm poplar plywood.

First thing to do is to build the structure following this instructions:





The whole process should look like this:


<img src="https://github.com/FablabTorino/tinyMatrix/blob/master/design/pendant/Process.jpg"width="900" />

Notes about the wiring

To manipulate pins and leds take a look at this scheme:

<img src="https://github.com/FablabTorino/tinyMatrix/blob/master/design/pendant/7.png"width="200" />

Green numbers rapresent the led-matrix's pin and red numbers are the ATTINY's ones.

So, for example, if you want to turn the first led on (Up-Left) you have to set:

pin15=HIGH;
pin1=LOW;

BOM

part	Quantity	Part number	Distributor Part Number	LINK
pushbutton	1	450-1650-ND	FSM4JH
coin battery	1	P189-ND	CR2032
battery holder	1	BC2032-F1-ND	BC2032-F1
100K resistors	1	CF18JT100KCT-ND	CF18JT100K
AT TINY 4313	1	ATTINY4313-PU-ND	ATTINY4313-PU
5X7 red matrix	1	160-1555-5-ND	LTP-757KR

#Credits

The project was inspired By [TigerUp] (https://sites.google.com/site/tinymatrix/) and customized by Franco Magni and Federico Vanzati in 2012, at Fablab Torino, further developed by Stefano Paradiso, Tommaso Laterza and Lorenzo romagnoli in 2015.