Useful websites
There will be some websites for download parts or calculate something.
https://b2b.partcommunity.com/community/
https://www.rushgears.com/tech-tools/part-search
https://www.festo.com/net/tr_tr/SupportPortal/default.aspx?cat=1094
http://partlibrary.alibre.com/
https://www.solidcomponents.com/
https://www.mcmaster.com/
https://docs.wpilib.org/en/stable/docs/getting-started/getting-started-frc-control-system/intro.html
https://www.chiefdelphi.com/t/paper-jvns-mechanical-design-calculator-2016/146281
https://www.robowranglers148.com/resources.html
http://frc971.org/content/resources-map
https://www.citruscircuits.org/resources.html
https://ccisdrobonauts.org/?p=robots