1.Ramps 1.6 is a 4-layer board.
2. It can be extended to LCD and other parts.
3. There are heater and fan MOSFET outputs and 3 thermistor interfaces.
4. 5A additional security and component protection fusion.
5. Heated bed controls additional 11A fuses.
6. Applied to 5 Pololu stepper drive board.
7. Design of Pololu plate pin socket can be easily replaced or removed for future design.
8. I2C and SPI pins are available for future expansion.
9. Servo connectors are used for connecting limit stops, motors and light-emitting diodes. These connectors are gold-plated and have a rated current of 3A, which is very compact.
10.The LED will light when the heater has output, choose 2 motors to connect to Z Prusa Mendel.