Adaptive Computing, a cloud management and high performance computing outfit in Utah, needed something really cool to bring to their trade shows. Something that makes order out of chaos, and demonstrates their attention to detail in the midst of miles of wiring. They decided building the largest non-commercial LED cube would be a good project, and thus the 16x16x16 All Spark Cube was born.
The All Spark Cube was constructed using 10 mm RGB LEDs wired together with three-foot lengths of 16 ga pre-tinned copper wire. In this video, [Kevin] shows off the process of constructing a single row; first the LEDs are placed in a jig, the leads are bent down, and a bus wire is soldered to 16 individual anodes per row.
The hardware for the build uses 16 Arduino Megas with a custom-made shield powering a 16×16 LED grid. The custom shields provide the 24V for the LEDs, 5V for the ‘duino, The Arduino boards communicate to each other through an RS485 connection, and the entire cube is connected to a computer through an RS232 serial connection.
The software is, admittedly, still a little janky. [Spencer] and [Thomas], the Adaptive Computing volunteers that are working on the control system, are still having a few problems getting logos and animations to display. They have managed to create a control app to draw individual pixels, as seen after the break.
Not bad for nearly a mile of wire and a summer’s worth of work, huh?