Finnish company Sooma manufactures and supports a tDCS device for the treatment of depression (in Europe). They recently added clearance to treat pain in Canada, and I would assume, are aggressively working towards clearing their device for the treatment of depression in Canada and the U.S.
I would recommend muting the sound (captioned so not necessary) in these next two.
If you follow the blog you’ll know I’m not savvy enough in the ways of electronics to know a well-constructed DIY circuit when I see it. I’ve generally depended on the Reddit crowd to sort through the pros and cons of DIY tDCS circuit design. Now that there are a handful of professionally developed and readily available devices on the market, I’m not seeing as many DIY projects, but here’s a couple that popped up on Youtube in the last week or so.