Stimulation with Pulse Pal
Bpod can control neural stimulation by triggering Pulse Pal, a precision pulse generator for physiology, optogenetics and behavior.
Like Bpod, Pulse Pal is entirely open source.
Here are some useful links to get started:
Wiki:
https://sites.google.com/site/pulsepalwiki/home
Repository:
https://github.com/PulsePal/PulsePal.git
Publication:
http://journal.frontiersin.org/article/10.3389/fneng.2014.00043/abstract