hackaday is a user on apoil.org. You can follow them or interact with them if you have an account anywhere in the fediverse.
If you don't, you can sign up here.
Build your own #electronics calibration standard https://hackaday.com/2018/06/15/homebrew-calibration-for-test-equipment/ source: https://twitter.com/hackaday/status/1007759939748679680