Circle Of Light
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Juli, pwnschlager, wirehead and I are going to build an LED project for Die Schmiede. We use this page to organize the project.
Document describing the whole system: Datei:CoFArch.pdf
What we need (except electronic parts)
| What? | Who? | Cost | Status | Comment |
|---|---|---|---|---|
| 1000 WS2811 LEDs | amir & pwnschlager | 138$ | Done | |
| (Guess) 4 x PC power supplies | ? | ? | Done | We found two working power supplies & wirehead has one |
| Oscilloscope | ? | ? | Done | |
| Tap measure | wirehead | ? | Done | |
| Lab power supply | wirehead | 0$ | Done | Will bring it |
| Multimeter | meks & wirehead | 0$ | Done | meks has one |
| Solder iron, solder | meks & wirehead | 0$ | Done | meks has one |
| Long power cables | amir | 0$ | Done | I have several meters. we have to figure out if that is enough. |
| Long signal cables | amir & wirehead | 0$ | Done | I have a large box full of 1m audio cables and two reels. wirehead also mentioned she had a reel. |
| Microcontroller for usb to midi | amir | 4€ | Done | We have 1 board |
| Microcontrollers for midi to LED translators | juli | 12€ | Done | We have 3 boards |
| Laptop | amir | 0$ | Done | We are going to use my laptop |
| Fog machine | nini | 0$ | Done | thx! |
| Fog liquid | ? | ? | Pending | I think i still have some stashed at the lab |
| Two Wiimotes | rin / ? | ? / 0$ | Done | |
| 4 sets of rechargeable batteries for the Wiimotes | amir | 0$ | Done | Had some lying around |
| PA | amir | 0$ | Done | I've got decent and loud active speakers |
| Organize a net to mount the LEDs on | juli & amir | ? | Partial | We gonna scout this week |
| Cable Ties | wirehead | ? | Done | I have several sizes |
| Caravan | wirehead | 1000€ + | Pending | here is a list of options |
| Cable extension reel | amir | ? | Done | Got one |
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 |
| 10 | Lochrasterplatine | Digikey 1738-1000-ND | $13 | pending |
TODO
| What? | Who? | Cost | Status |
|---|---|---|---|
| Test the maximum length of a LED-strand (and therefor determine the number of needed power lines) | ? | ? | ? |
| Program a Wiimote receiver for the laptop (x64-linux). | amir | 0$ | Already done for another project |
| Program visuals based on Wiimote input for the laptop | amir + pwnschlager | 0$ | amir wrote visuals |
| 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 visuals. (I also ported it from C to C++ so i could use RTMidi and the wonder of C++ :p)
Visuals
- Slide: Kinetically slides over an image larger then the LED-matrix controlled by Wiimotes
- Piano: Reads midi events from an instrument and visualizes noteOn/noteOff events
- Spectro: Receives audio from a microphone and visualizes the spectrum
- Water: Receives audio from a microphone and visualizes the waterfall spectrum
- Video: Plays a video on the LED-matrix
