On Wed, Dec 6, 2023 at 7:36 AM Andre Rodier <an...@rodier.me> wrote: > > First, if this post is off-topic, feel free to give me other mailing lists.
The eevblog may be another place to ask. But be warned, the folks on the eevblog can get really deep into the weeds on subjects like this. If you are not careful, they might provide you with circuit designs and have you build your own hardware. Also see <https://www.eevblog.com/> and <https://www.google.com/search?q=totp+hardware+site:eevblog.com>. Jeff