fritzing
Allowing resistor value to be displayed in schematic view as '4K7'
Problem
@Ei3JU-Gerry mentioned in the forum post here: https://forum.fritzing.org/t/iec-style-resistor-symbol/19575/16
He said:
Typing 2K7 (not 2k7) in the Inspector field allows me to use multiplier as decimal (solved). Now, how do I lose the omega?
Proposed Solution
Based on my understanding, he wants to remove the trailing "Ω"
One workaround could be to use the part number to display the resistance:
The part number is also exported to the BOM, both html and csv version. Of course this introduces the problem that part number and resistance might be out of sync.
It think the technical reasons to use the RKM notation (IEC 60062 2016) is a bit outdated. Main points mentioned in the standard: Avoid errors from missing dots, and fixed length encoding for database. I think neither is an issue since decades. Just writing down the value with its physical unit seems to make more sense. Especially for beginners, physical notation probably should be the default. You can learn RKM notation anytime, but why first time you see a circuit?
There are still valid use cases:
- On PCBs, the silkscreen may be quite coarse, and RKM is more robust and compact.
- Popular export formats for pick and place and PCB testing use fixed length encodings.
As I understood it, the standard suggests using capital letters corresponding to the SI prefixes (2K7, not 2k7). I think the later is still used quite often.
If we implement a setting, like switching a project to IEC, there might also be a setting to switch to RKM. Which RKM notation? I'd guess 4 digits + tolerances?
