Friday, October 29, 2010

Total control of testub es

I got my replacement chips this week, and with a couple of alterations to the hardware I was able to get the cnc axis running again, this time with a system I knew would not fry anything. I was also able to advance the processing sketch to the point that I now can have total control of the cnc axis with the water being dropped into the right place.

I made a very rudimentary test tube rack, which can hold 17 test tubes. Annoyingly, test tubes were slightly taller than I had guessed so I had to make a quick fix by bending the extension bar which holds the drip tube in place. I am able to get the water drip into the tubes quite easily using the siphon effect. The internal diameter of the tubes is sufficiently small that I can quite accurately measure out a single drop. At the moment I am simply balancing a mug of water on a battery to get the height needed for the pressure, however I will have to find a better solution. I think suspending the water source would be both practical and visually interesting, so I have asked Philip to see if he can get an IV bag for me (his Mum is a midwife that works in a hospital so he reckons she can get one)


I also got the domain testub.es linked to my server this week (I bought the domain a couple of weeks ago) so I will be able to start on the website proper next week.

Tags: testub es

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