I need to built a 3x3x3 LED cube. I need to be able to turn every LED on (not at the same time) in different patterns. I need to use Charlieplexing (note that any other method is not a viable option), with a Arduino UNO (6 pins). I am allowed to use soldering. I have a limited supply of components:
- 6 Resistors
- 1 Arduino Uno
- 27 LEDS
- 1 Breadboard
- Soldering iron and solder
- Few wires (these wires cannot be used to connect the LEDs to each other. I need to solder)
How would I go about doing this? Please refrain from suggesting ideas that require components not listed above and do not use Charlieplexing. I searched online but found very tutorials with the above constraints. One useful tutorial was:
However the above tutorial uses transistors, something that I do not have. It also doesn't show where the pins need to be placed. I was also hoping for something with a bit more detailed instructions. This is not a homework assignment.
Please do not suggest examples (there are a plethora of videos and images of cubes online) but rather some kind of guide or instructions on how to proceed.
I unfortunately have no ideas. I was able to Charlieplex 27 LEDS successfully - however this was all on one layer as opposed to being a cube. Charlieplexing on one layer was simple - just a matter of connecting wires, however Charlieplexing with a cube seems to be much more complex.