Show HN: 32V TENS device from built from scratch under $100littlemountainman.github.io70 ポイント·投稿者 autonomydriver·8 か月前·25 コメント
autonomydriver·8 か月前·議論Poor wording, should mean that each finger has a dedicated output, but you are right, they are all tied together
autonomydriver·8 か月前·議論In my searches, yes, I found something like that from an italian university. Sadly can't find the paper now.
autonomydriver·8 か月前·議論Coming 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 か月前·議論The 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.