Simple Flowcharts for Libre Office

[yottie]

Would like to be able to produce quick flowcharts :

Simple boxes for text, also
Boxes representing electronic parts for text

 

[xMrIS]

There is flowcharts on the LibreOffice (drawing toolbar IIRC I dont run LibreOffice now)
also there is an extension "SmART Gallery" https://extensions.libreoffice.org/extensions/smart
Btw, try Dia (http://dia-installer.de/) is a GPL freeware and multiplatform.