Many of these sites are in Japanese. Just look for the translate button on your browsers.
YouTube channel: https://www.youtube.com/user/uebo0222/videos
Web site:https://tj-lab.org/
Twitter: https://twitter.com/t_uebo
Blog: https://tj-lab.org/%e3%83%96%e3%83%ad%e3%82%b0/
Upgrades of the JF3HZB VFO: https://github.com/WA2FZW/It-s-Not-Just-Another-Digital-VFO-by-WA2FZW-VK3PE-and-G3ZQC
Discussion on Japan’s “QRP Plaza.”http://bbs7.sekkaku.net/bbs/?id=qrp&mode=sort&check=now&type=letter&open=1&view=1&reverse=off&inputform=1&search=JF3HZB
This is a fantastic design that brings old school mechanical vernier drives to silicon. May the analog control panel reign forever. Now to scrape off the bench and get to work.
I created a project by the great T Uebo. https://youtu.be/5XVkK5DGlp4