Connect your 2 normally open switches in parallel to D9 and ground, fix them at the lower left (0,0) of your machine and enable home switches in the settings. Note: You must be using my Grbl 1.1e …

T2 Laser Engraving SoftWare@sbaja10 Use center starting point and set home (origin) to the middle of the material, or add home switches and then the grid alignment will always be perfect so alignment is …

EleksMaker - Please consider open sourcing the firmware; developers could add all sorts of features such as enabling WiFi, ifttt integration, dynamic images, animations, push notifications, news alerts, …