Last week we had our first biohacking workshop at foam kernow with the London Biohackspace. We had a great turnout and an interesting mix of people. Amber has written a more complete overview of the event.
For more information on yeastograms and how to make your own there is more info here. One of the things we helped with was the construction of a high power UV LED array needed to expose the cultures to radiation. We used 19 LEDs from here powered in 3 chains of 5 and one of 4 at 20V drawing 1.2A. After battling Ohms law for a while we found this site to be immensely useful. We also spent a lot of time on the LED heat sinks and cooling with an old PC fan – but the only problem we had was with the limiting resistors which overheated resulting in a last minute shopping trip to get some 10W rated bigguns. After that everything ran warm rather than hot and could be left overnight. One very important thing to mention with the UV light is to get proper eye protection when working with this, and not just dodgy sunglasses.