TheTL-Smoother is an addon module for 3D printer stepper motor drivers.
You will got smoother movement especially on the delta-style 3Dprinter under DVR8825 stepper drivers and A4988/2 drivers
The board provides flyback diodes (freewheeling diodes) for the motor outputs, so that they are also protected against induction voltages in the unpowered state of the driver.
