Infrared_emitter

4 Everlight EL-IR333-A infrared emitters

4 2N3904 transistors

4 2N2222 transistors

http://nl.mouser.com/ProductDetail/Everlight/EL-IR333-A/?qs=sGAEpiMZZMvAL21a%2fDhxMjCeBq8uldq1qGQbShxP2xY%3d

https://www.sparkfun.com/products/10732

http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Kits/PowerIR-v11.pdf

http://www.plantedtank.net/forums/showthread.php?t=391265&page=12