![I am building my first cnc machine which is a laser engraver and I need to know what pin to connect to on my ramps 1.4 board. : r/CNC I am building my first cnc machine which is a laser engraver and I need to know what pin to connect to on my ramps 1.4 board. : r/CNC](https://i.redd.it/ap0zubbmz3t71.jpg)
I am building my first cnc machine which is a laser engraver and I need to know what pin to connect to on my ramps 1.4 board. : r/CNC
![Mega 2560 R3 Mega2560 Rev3 +ramps 1.4 Controller +ramps1.4 Lcd 12864 Lcd For 3d Printer Kit - Integrated Circuits - AliExpress Mega 2560 R3 Mega2560 Rev3 +ramps 1.4 Controller +ramps1.4 Lcd 12864 Lcd For 3d Printer Kit - Integrated Circuits - AliExpress](https://ae01.alicdn.com/kf/Ha8bb8c0f1ba4457dab5571bb1bd41eaaq/Mega-2560-R3-Mega2560-REV3-RAMPS-1-4-Controller-RAMPS1-4-LCD-12864-LCD-for-3D.jpg_640x640.jpg)
Mega 2560 R3 Mega2560 Rev3 +ramps 1.4 Controller +ramps1.4 Lcd 12864 Lcd For 3d Printer Kit - Integrated Circuits - AliExpress
![Upgrading of a board with the Marlin firmware for laser engraving using an RAMPS 1.4 board as an example. - EnduranceLasers Upgrading of a board with the Marlin firmware for laser engraving using an RAMPS 1.4 board as an example. - EnduranceLasers](https://endurancelasers.com/wp-content/uploads/2022/02/word-image-12.png)
Upgrading of a board with the Marlin firmware for laser engraving using an RAMPS 1.4 board as an example. - EnduranceLasers
![Description for Arduino 2560 with RAMPS 1.4 | Technical descriptions | Documentations | my home fab | Arduino, 3d printer kit, Printer Description for Arduino 2560 with RAMPS 1.4 | Technical descriptions | Documentations | my home fab | Arduino, 3d printer kit, Printer](https://i.pinimg.com/originals/1f/2e/25/1f2e25d568d1826cf93ca4d5fc510bf6.jpg)
Description for Arduino 2560 with RAMPS 1.4 | Technical descriptions | Documentations | my home fab | Arduino, 3d printer kit, Printer
![Upgrading of a board with the Marlin firmware for laser engraving using an RAMPS 1.4 board as an example. - EnduranceLasers Upgrading of a board with the Marlin firmware for laser engraving using an RAMPS 1.4 board as an example. - EnduranceLasers](https://endurancelasers.com/wp-content/uploads/2022/02/word-image-10.png)