With this adapter you can test your SilentStepStick or flash the TMC2208 SilentStepStick with an USB-to-serial converter.
The adapter comes with stackable headers, so you can use it direct on your 3D printer board, e.g. on a Ramps like the photo shows.
The tester is pre-configured for standalone operation on an USB to serial adapter (VIO-VM jumper closed).
It is sold as kit, with PCB, headers and 1k resistor.
more information: learn.watterott.com/silentstepstick