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Making the frame
Log from FLED
Now we wanted this display to look really sweet since it will be on our office wall for some time to come. To make it look gorgeous we decided to make the frame out of white foamed PVC board, and the front diffuser out of 1/4" thick white acrylic.First...

Adding the electronics
Log from FLED
To drive this system we decided to use a Raspberry Pi and Arduino Micro combination.The Raspberry Pi runs a stack of Nginx, Memcached and NodeJS which then feeds desired LED colors to the Arduino Micro which streams them out over the WS2811 protocol...

A working display!
Log from FLED
Finally Ivan screwed the backboard into place. One of the great things about using Foamed PVC is you can basically treat it like wood, it holds a screw well and is easy to cut and saw.With our fingers crossed we switched it on, and to our delight we...

Software stack
Log from FLED
The display is looking great, but we really need to make this into more than just a pretty rainbow colored matrix.To do this we decided we wanted to be able to open up the control of the lights to all our developers, and we want to be able to feed data...

Nginx and Memcached
Log from FLED
With FLED we are trying to make a visualization platform, somewhere all our apps and monitoring tools can send data and where we can then use that data to make interesting visualizations.As such we need to be able to accept data from a variety of sources...

Oh No! *Pop*
Log from FLED
So just after presidents day we came back into the office and found that the FLED was dead! Turned it on and nothing happened. After eliminating the ATX PSU from the equation it became clear we would need to pull the display down and open it up to find...

A quick video...
Log from FLED
Eren had his nice camera in the office a couple of weeks ago and he put together this quick video of some of the animations on FLED. They're not the best (you should see some of the cool stuff our staff have been hacking together), but its pretty cool...

A new start....
Log from FLED
So the LEDs have died again. Typical really, we fixed them up just two days ago replacing another blown unit, but it once again died. These really have been the worst LEDs I have ever encountered, bright and cheap, but completely unreliable.Therefore...

1728 leds is a lot more data than you think
Log from FLED
In the original FLED implementation we had a Raspberry Pi inside the case. This Pi ran a NodeJS application that executed the animation code written in JavaScript and provided a web interface for users to create animations within. This all worked fairly...

Success!
Log from FLED
After much soldering....and a little debugging we managed to get the array lit up.If you look carefully you can see the grounding braid we used as a power and ground bus at either end of the strips. We then simply hooked up data and clock (these are...

It's alive!
Log from FLED
Finally, after much fiddling around, the upgrade to FLED is operational.We're now running a grand total of 1768 LEDs, in a 52x34 configuration. The setup is a Beaglebone Black connected to an RGB-123 48 output cape. The cape level shifts the Beaglebone...

Animations!
Log from FLED
So after you have a working LED matrix, you can't stop there. Otherwise you just have a big display running strandtest and that frankly just sucks.We built a Javascript animation engine that we use to drive the display, this runs NodeJS which allows...

The Design And Construction Of A Backplane
Log from MC68000 Computer
This entire project is a little bit of an odd bird. In terms of electronic sophistication, it’s not too different than any of the other homebrew computers you might see on Hackaday. This isn’t a project that will just sit on my workbench until I die...

Power And Reset Circuits
Log from MC68000 Computer
Since we're using an ATX power supply for this computer, there is a little magic that needs to happen before it becomes a proper power supply. Besides the usual orange, red, yellow and black wires attached to a 20-pin connector, there are also a few...

Theory of a CPU module
Log from MC68000 Computer
Compared to the 8080, the Z80, the 6809, 6502, and all the other 8-bit microprocessors used in boxxen of yore, the CPU I’m using for this project - the Motorola 68000 is both extremely powerful and extraordinarily complex. The power comes from a huge...

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