Introduction

The UsbParMarker is an custom-designed open-source USB-controlled replacement for the old parallel port (LPT), a legacy interface still used in certain research fields. It can be used to send 8-bit markers and control TTL devices with sub-millisecond timing via its female DB25 output.

See the Github repo for more information, including E-Prime, OpenSesame and Python usage guides. To use the UsbParMarker in Tobii Pro Lab, see the Tips and Tricks section of the Tobii Pro Lab page.

Availability and Support

SOLO currently has UsbParMarkers in stock. To borrow one, or to request support, please contact us at labsupport@fsw.leidenuniv.nl.