The SilentStepStick is a stepper driver board for 2-phase motors, based on the TMC2209. The driver boards are compatible with StepSticks of the same familiar size and drop-in replacements for some of them.
Key Features

MicroPlyer

SpreadCycle

StealthChop

microstep table

CoolStep

passive braking

short detection

Stall detection

StallGuard2

StealthChop2

StallGuard4

TMC2209-LA stepper motor controller & driver

Supply voltage 4.75-28V

Continuous Iphase = 1.4ARMS

Iphase up to 1.77ARMS = 2.5Apeak for a short time

Quiet operation with StealthChop

Sensorless homing with StallGuard4

Energy savings with CoolStep

Configuration and extended diagnostics via UART

Control via Step&Dir interface

Board width 0.6″, board height 0.8″

2×8 pin 0.1″ header rows for pins/connectors

Resources

TMC2209 SilentStepStick Schematics
TMC2209 SilentStepStick Datasheet