This is cool, and all, but you can buy a TENS unit for $20.00 to $40.00 on Amazo...

		NoSalt 2 days ago \| parent \| context \| favorite \| on: Show HN: 32V TENS device from built from scratch u... This is cool, and all, but you can buy a TENS unit for $20.00 to $40.00 on Amazon.