# \#closed-loop-problem **URL:** https://forum.makewithtech.com/tag/closed-loop-problem/27.md [Latest](https://forum.makewithtech.com/latest.md) · [Categories](https://forum.makewithtech.com/categories.md) · [Tags](https://forum.makewithtech.com/tags.md) --- ## [Bigtreetech S42B Closed-Loop Driver Controller](https://forum.makewithtech.com/t/bigtreetech-s42b-closed-loop-driver-controller/2754)
**Author:** [@FosterBDAV66](https://forum.makewithtech.com/u/FosterBDAV66)\ **Replies:** 1\ **Last updated:** [November 12, 2020, 1:34am UTC](https://forum.makewithtech.com/t/bigtreetech-s42b-closed-loop-driver-controller/2754 "2020-11-12T01:34:28Z")
Most people, when upgrading driver control boards go with TMC2208s or TMC2209s. I decided to go with the Bigtreetech’s closed-loop drivers. These are a bit more involved, but worth it, IMO, once you get them working corr…