Backordered, ETA late October.
The 2130 is like a 2100, but has the ability to be controlled via SPI if desired. Can also operate just like a 2100. Important: Read the documentation, especially the section on powering.
We are now US distributors of a Stepper Motor Driver based on a Trinamic TMC2130 and created by Waterott Electronic. Much smoother control, up to 256x micro stepping, quieter, sometimes nearly silent stepper operation. Note that the TMC2130 can use a SPI interface for configuration.
Comes in both kit and pre-assembled forms. Kit forms comes with pin headers you must solder in place, pre-assembled comes with the pinheaders already installed.