Colored waterfigures. Tools used are a homemade hardware controller with an Altera FPGA chip (DE1 terasic board) 2 lasers are used for the detection. Multiple flashes are used. The controller calculate the delay timings, power for the waves on the speaker, camera control and flashes. For the current 3D versions of the waterfigures see: www.flickr.com/photos/fotoopa_hs/sets/72157623796566300/ See a
![Waterfigures](https://cdn-ak-scissors.b.st-hatena.com/image/square/51c6995cdb29c0b62d49584654c16cf62327b7c4/height=288;version=1;width=512/https%3A%2F%2Flive.staticflickr.com%2F3288%2F2419541638_5dda6d00f3_c.jpg)