The original Filament Encoder of ERCF based on the TCRT5000 PCBs is working for some people but is also creating headaches for lots of other people and also makes up quite a good amount of support questions on discord.
Please note that only 1 of these are needed per ERCF setup.
More info can be found here: Binky
**Short term preorder ships in 7-10 days**