TinyCAD is our preferred tool for creating electrical circuit diagrams and schematics. Download it from http://tinycad.sf.net/

“AngryEE” at GitHub has written a good tutorial on installing and getting started with TinyCAD: https://github.com/angryee/light-costume/wiki/TinyCAD.

• Each object in the drawing must have its own unique reference (“Ref” in the TinyCAD Tool Options when selecting an object in a drawing).
  • Use reference letter prefixes based on part-number-functions.
  • In multi-page drawings, each object must have its own reference number. Using the same reference number on two different objects means that the same object is used in two places, which may be the case at times.
  • For multi-page drawings which iterations of the same drawing, it is often useful to have all the parts on page one start with 1x or 1xx, and all the part references on page two start with 2x or 2xx, etc.
• Each object needing listing in the Bill of Materials should have an additional parameter of “PARTID”, where the value is the MT-Yxxx MetaTek part number. PARTID should only appear once in each ojbect's parameter list.
  • Items like switches often need additional parts linked with a single object; in that case parameters “OPERATOR” and “LABEL” with MT- part numbers can also be used.
• Once the drawings are complete and the design has been saved, open the menu Special → Create Parts List….
• Set Output file to “CSV file”. The default output name will be the drawing name with .csv.
• Normally you will check “Include all sheets” and “Include all attribute information”.
• Click Export.