Standardize the part labels

[failiz]

We should have a document that specifies how a part type should be referenced (label in Fritzing). Right now the parts have different labels depending on who created them. For example, there are integrated circuits with IC and U labels. There are motors with M labels but there are a few parts that also use the M label (e.g., FC-51-IR-Sensor, I guess that there are). I just realized this when in my course I discovered some students confused (they thought that the motor I had in my slides was their IR sensor as they had the same name, "M1" ).

Some useful links: https://en.wikipedia.org/wiki/Reference_designator https://www.eevblog.com/forum/eda/reference-designator-for-components/ Kicad convention: https://klc.kicad.org/symbol/s6/s6.1/

Could we start defining this? I would like to fix the IR sensor, but I want to avoid every person taking their own standard. I would suggest A for assemblies, as discussed in https://forum.fritzing.org/t/suggestions-for-additional-documentation/15135/2 . In fact, my pull request of the H bridge uses A as a label, but it is the only part with that label...

I would recommend starting from Kikad convention and adapting it slightly to minimize the changes in Fritzing. For example, keeping LED as the designator for LEDs.