It makes me scratch my head that OpenTag is a big old ring. The ones on Snapmaker filament are just a little dot sticker.
I’m just wondering whether the Snapmaker antennas physically can read other tags, e.g. the OpenTag ones.
I didn’t get the ring part either, both the K2 Plus & X1C just have disk about the size of a quarter.
Someone explained on discord. It’s for units that don’t have a spool-sized antenna, so that the tag can be read no matter the spool rotation angle.
Think things like AMS boxes, I guess?
Not necessary for the U1, but good for other printers.