Pulse Pal
Pulse Pal is an open and inexpensive (~$210) alternative to pulse generators used in neurophysiology research, and is most often used to create precisely timed light trains in optogenetics assays. Pulse Pal generates four channels of configurable square pulse trains ranging in voltage from +10 to -10V using a bipolar DAC. Two digital trigger channels can be used to start and stop playback. APIs are available in C++, Python and MATLAB, and the hardware designs and firmware are fully open source.
Be sure to check the paper about it and their wiki page.
Andre Maia Chagas
Lecturer in Open Science
I’m passionate about open science and open source hardware, and how those two can be used to increase research and education reach around the world. I have a background in Neurosciences and have been developing affordable open science hardware and teaching others to do so via workshops, talks and outreach events. I started Open Neuroscience, and volunteer at Trend in Africa as an open source adviser and by organizing and running Open Labware workshops. Currently I work at the Department of Neurosciences in the University of Sussex, where I develop equipment to support research labs. For more details on those projects check the Open Sussex Neuroscience page On my spare time I offer consultancy services around open science hardware through Prometheus Science. If you need to replicate a methods paper, or if you’d like something custom built for your lab, get in touch!