The Triquetra uses a standard gcode file to zero your bit to a work piece. There is no special "interface" required for using one with PicSender. I have used one since Charlie first started producing them. You can load the gcode file for your Triquetra into one of the QCodes positions (click the blue Quick Codes button) so it is easy to run whenever you need it. More info is in the PicSinder Tutorial (click the Help or Tutorial button at the bottom of the PicSender screen, then click the yellow Tutorial button on the popup window). Please let me know if you need more info.