A fun, 2 hour workshop to teach kids about hydrogen. All the details here: http://www.mattvenn.net/2014/06/29/hydrogen-fuel-cell-and-aerial-photography-workshop/
A pretty small tesla coil that was great fun to build and a good way for me to learn how to use my CNC router. http://www.mattvenn.net/2012/06/13/tesla-coil-finished/
This started off as a way of visualising real time energy, and turned into a general purpose drawing robot and website. The robot uses designs generated at http://cursivedata.com. http://www.mattvenn.net/2013/07/11/data-viz-hackday/
cheap breakout board for an SMT dc booster: http://www.mattvenn.net/2011/09/26/dc-booster-pcb/
a pcb board for using lots of leds! http://www.mattvenn.net/2014/02/25/big-7-segment-display-pcb/
developed for bristol braille technology. http://www.mattvenn.net/2014/02/08/using-a-computer-to-read-braille/
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Thanks for following my Compact, $25 spectrometer project!