How-To: Modify Marlin to control a laser with an SKR Pro - SKR

The touchscreen is in serial mode, I have all three cables hooked up. I will try disconnecting one set tomorrow and see if that helps, thanks for the suggestion.

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How-To: Modify Marlin to control a laser with an SKR Pro - SKR Boards - V1 Engineering Forum

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How-To: Modify Marlin to control a laser with an SKR Pro - #58 by aaronsparky660 - SKR Boards - V1 Engineering Forum

BTT SKR Pro V1.2 Setup Guide - UART, BLTOUCH - Make 'N' Print