I just uploaded a design doc for the Universal Motor Controller on the downloads page. I used LibreOffice 5.3 since it could export to PDF, but believe me this is the last time I use that. I had so many problems importing drawings that I ended up importing everything to Word and then copy & paste as bitmap from Word to LibreOffice. LibreOffice doc’s and illustrations is not a good combination. I like LibreOffice, but I like Things that work more!