Show HN: 32V TENS device from built from scratch under $100littlemountainman.github.io70 points·by autonomydriver·8 ay önce·25 comments
autonomydriver·8 ay önce·discussPoor wording, should mean that each finger has a dedicated output, but you are right, they are all tied together
autonomydriver·8 ay önce·discussIn my searches, yes, I found something like that from an italian university. Sadly can't find the paper now.
autonomydriver·8 ay önce·discussComing in a V2, semester just started again, so I have a little less time for it. Given that I also have some other projects on the way :)
autonomydriver·8 ay önce·discussThe two BJTs do limit current to 20mA on all finger outputs. Voltage feedback is also set up to ensure maximum 32V. MCU protection, well just a ferrite bead.