Differences

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--- projects:ledcube [2011/05/29 14:40]
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+++ projects:ledcube [2016/11/16 13:06] (current)
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 If you do this a couple of hundred times per second, the human eye does not see it blinking. The human eye thinks the LED's are constantly on. This phenomenon is called [[http://en.wikipedia.org/wiki/Persistence_of_vision|Persistence of vision]] .
-The intelligence behind it all is an [[http://www.atmel.com/dyn/products/product_card.asp?part_id=4198|Atmega328P]] microprocessor. This sounds like a lot of work but actually you can buy a PCB with a micro-controller, serial port for programming and all basic components for using the Atmega328P quite cheaply. I bought a couple at [[http://www.avmicrotech.com/page1.php|avmicrotech]] on [[http://stores.ebay.com/AVRMEGASHOP|e-bay]]. You need only one board like the "''ATMEL ATMEGA328 Arduino Duemilanove bootloader''" for this project.
+===== Micro-controller =====
+The intelligence behind it all is an [[http://www.atmel.com/dyn/products/product_card.asp?part_id=4198|Atmega328P]] micro-controller. This sounds like a lot of work but actually you can buy a PCB with a micro-controller, serial port for programming and all basic components for using the Atmega328P quite cheaply. I bought a couple at [[http://www.avmicrotech.com/page1.php|avmicrotech]] on [[http://stores.ebay.com/AVRMEGASHOP|e-bay]]. You need only one board like the "''ATMEL ATMEGA328 Arduino Duemilanove bootloader''" for this project.
+===== Driver board =====
 The only problem we need to solve now is how to add enough output pins and power to the Atmega328P so we can drive 64 + 8 connections which use about 1,28Amp at full load.
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 For the 64 columns I used a [[http://www.nxp.com/documents/data_sheet/74HC_HCT595.pdf|74HC595 8-bit serial-in, serial or parallel-out shift register with output latches; 3-state.]]. Because there is never more than one level on at any time, we do not need mosfets or transistors to boost the power of the outputs. We do need to connect 8 74HC595 together to get 64 outputs.
-These are the principles used in creating the LED cube, the details will follow...
+====== Bringing it all together  ======
+The design, build and software are made and put together is described in the following paragraphs.
+===== The driverboard =====
+The ''driverboard'' is the PCB which connects the Arduino to the LED cube.
+I designed the PCB in a program called [[http://www.cadsoft.de/|Eagle]]. This software is really good for designing PCBs and schematics but unfortunately the free version has a limit on the maximum size of the PCB you can design. So in the end I actually made the board on a ''PCB Prototyping Board'' Actually [[http://www.okaphone.com/artikelen.asp?id=977&groep=604|this one]].
+^The schematic^^
+| {{:projects:led-cube_8x8x8.pdf|}} | {{ :projects:led-cube_8x8x8.png?200|}} |
+The finished ''driverboard'' in the end looks like this:
+^The driverboard^^^
+| {{:projects:driverboard_03.jpg?200| All hooked up}} | {{ :projects:driverboard_02.jpg?200 | From the top}} | {{ :projects:driverboard_01.jpg?200| From the side}} |
+===== The LED cube =====
+The construction of the LED cube is a very tedious and time consuming part, and also the most visible part. So take your time and measure twice, cut once...
+Some details of the construction:
+^The LED cube^^^^
+| {{:projects:led-cube-construction.jpg?200|cube-construction}} | {{:projects:led-cube-finished-layers.jpg?200|cube-finished-layers}} | {{:projects:led-cube-detail.jpg?200|cube-detail}} | {{:projects:led-cube-finished.jpg?200|cube-finished}} |
+===== The Software =====
+The software is still a work in progress, as it should be. Because there are always more effects and animations to create if you have the power over 512 LEDs on your fingertips...
+These are the principles used in creating the LED cube, the details might follow some day... If you have a question regarding this project, you could try sending an e-mail. I might even answer if the question is right.