Circle Of Light
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WTF
Juli, pwnschlager, wirehead and I are going to build an LED project for Die Schmiede. We use this page to organize the project.
Architecture
Document describing the whole system: Datei:CoFArch.pdf
What we need (except electronic parts)
| What? | Who? | Cost | Status |
|---|---|---|---|
| 1000 WS2811 LEDs | amir & pwnschlager | 138$ | Order pending |
| (Guess) 4 x PC power supplies | ? | ? | We found two working power supplies |
| Oscilloscope | ? | ? | ? |
| Tap measure | ? | ? | ? |
| Lab power supply | wirehead | 0$ | Will bring it |
| Multimeter | meks | 0$ | meks has one |
| Solder iron, solder, short cables | meks | 0$ | meks has one, not sure about short cables, probably some restln |
| Long power cables | amir | 0$ | I have several meters |
| Long signal cables | amir | 0$ | I have a large box full of 1m audio cables |
| Microcontroller for usb to midi | ? | ? | ? |
| Microcontrollers for midi to LED translators | juli | 16€ | We have four boards |
| Laptop | amir | 0$ | We are going to use my laptop |
| Fog machine? | ? | ? | ? |
| Two Wiimotes | rin / ? | ? / 0$ | Maybe we may borrow from the lab / Can borrow from rin |
| 4 sets of rechargeable batteries for the Wiimotes | amir | ? | Had some lying around |
| PA | amir | 0$ | I've got decent and loud active speakers |
| Organize a net to mount the LEDs on | juli | ? | ? |
| Cable Ties | ? | ? | ? |
| Caravan | ? | ? | ? |
What electronic parts we need
| Quantity | Description | PartNr. | Cost | Status |
|---|---|---|---|---|
| 25 | 220Ohm 1/4watt resistor | Digikey CF14JT220RCT-ND | $0.72 | pending |
| 10 | 1N4148 diode | Digikey 1N4148-TAPCT-ND | $1.78 | pending |
| 25 | 10kOhm 1/4watt resistor | Digikey CF14JT10K0CT-ND | $0.72 | pending |
| 25 | 470 Ohm 1/4watt resistor | Digikey CF14JT470RCT-ND | $0.72 | pending |
| 25 | 6N138 optocoupler | Digikey 751-1263-5-ND | $33.23 | pending |
TODO
| What? | Who? | Cost | Status |
|---|---|---|---|
| Test the maximum length of a LED-strand (and therefor determine the number of needed power lines) | ? | ? | ? |
| Program a Wiimote receiver for the laptop (x64-linux). | amir | 0$ | Already done for another project |
| Program visuals based on Wiimote input for the laptop | amir + pwnschlager | 0$ | amir wrote a visual |
| Encode the visuals to midi with a program for the laptop | ? | ? | ? |
| Build and program a usb to midi transmitter dongle for the laptop. Optionally buy or borrow a midi interface | ? | ? | ? |
| Build and program midi receiver to LED boards (short MW-boards) for each strand | ? | ? | ? |
| Solder LED-strands with MW-boards | ? | ? | ? |
| Solder power lines from power supplies to LED-strands | ? | ? | ? |
Code
I hacked wmgui (part of libcwiid) to output MIDI events and wrote a simple visual that slides over a large image depending on events, always only showing a portion of the image.
