Materials
I finally got around of writing a proper instructions for the bioLED hacking workshop. This mini-workshop is great to be done also at clubs, late at night. All you need is some fresh plankton / daphnia cultures, which can be usually purchase in a pet-shop as life food for aquarium fish. Then you need the following:
* insulating tape
* a knife
* grinding paper of different roughness
* some containers, pipettes and dishes
* a CR2025 battery
* an LED
Instructions
Grind, tape, hunt
Get some nice LED, whatever color you like. Somehow the RGB color changing LEDs give the best sharpness of the daphnia projection, because the emitting areas are super small inside the LED. Now grind down the LED to make it flat, to approximately 1 mm above the diodes/electronics inside. Then polish it as good as possible, until its nice and clear again. Check with the battery, if its still working, if you grind too much you might have filed away the electroncs… start again. Add battery and tape it tightly, best to use slightly elastic insulation tape. Cut a 3mm wide tape and stick it around the LED to create a dish/pot. Go hunting….
Try to suck up as many daphniae in a small drop using a pipette. Because daphnia are attracted to light, they might concentrate at one side of the dish facing the sunlight (or add a strong light white source from the side and wait a bit). Add the drop of fresh pondwater containing the daphniae. Enjoy….
Grow your own daphnia at home
To make sure you keep a stock of plankton / daphnia alive you can build a simple window farm. More info on Daphniaology can be found on the wiki. U can usually find fresh daphnia in spring and summer in any kind of natural pond. If you want to have a larger quantity try to go around in your local pet shops and ask for fresh life food. Then build a little cupboard next to your window, and maybe stick some diffusor on the window to protect the cultures from too strong direct sunlight
Example Videos
Enjoy your bioVisuals
Daphnia bioLED hack from dusjagr on Vimeo.
bioVJ-ing at the VideoStammtisch in Baden, 21. April 2012
bioLED visuals @ VideoStammtisch, Baden from dusjagr on Vimeo.
Advanced BioLED Hacking at HägarSpace in Biel
Advanced BioLED Hacking at HägarSpace in Biel from Pije.
Step by Step on fbook
From hacked bioLED visuals, posted by Marc Dusseiller Dusjagr on 4/22/2012 (18 items)
- Hacked bioLED visuals using daphnia, some tape and a grinded LED.
- bioLED | Step 0: Buy some Plankton aka Daphnia from the local petstore.
- bioLED | Step 0: or order it from a fishfood supplier.
- bioLED | Step 0: For additional plankton supply grow it yourself in an easy window fa…
- bioLED | Step 1: Materials: plankton, pipette, small dish, knife, tape, grinding pape…
- bioLED | Step 02: Grind down the LED until its flat.
- bioLED | Step 03: Grind as close as less than 1mm to the diode/electronics inside.
- bioLED | Step 05: Cut a thin, approx 3mm wide piece of insulating tape.
- bioLED | Step 04: Polish LED until its as clear as possible
- bioLED | Step 06: Wrap around the LED to form a small container/pot. The height of th…
- bioLED | Step 07: Tightly wrap the LED on the battery.
- bioLED | Step 08: Add some of the plankton into a small dish.
- bioLED | Step 09: Go hunting. During the day the daphnia will be attracted to the sun…
- bioLED | Step 10: Try to catch as many daphnia as possible in a very small drop.
- bioLED | Step 11: Add the drop containing the daphnia into the bioLED.
- bioLED | Step 12: Add more if needed and try to reduce the miniscus so the water is f…
- bioLED | Step 13: Relax and enjoy….
- bioLED | Extra step: If its already dark you can also attract the daphnia with a whit…
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Cooking little animals alive in projector #questionable
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