The first paper on the Propeller Experiment Controller was published today, and the website is now officially open. Currently, the website is in a rather rudimentary form, but I do offer several pages related to the Propeller Experiment Controller. I will continue to add more information and tutorials related to the Propeller Experiment Controller and general apparatus design as time permits. For now, click the link below to check out the paper, or take a look at the Experiment Controller page for more information.
Varnon, C. A., & Abramson, C. I. (2013). The propeller experiment controller: Low-cost automation for classroom experiments in learning and behavior. Comprehensive Psychology, 2, 1-18. doi:10.2466/07.08.IT.2.2.