3d printer kit servo connector is used to connect to the end block, the motor and the light emitting diodes.
Ramps 1.4 control board option 2 motors connected to prusa mendel.
3d printer 4988 driver LED indicates when the heater output.
4988 driver with heat sink pololu board pin socket, so they can be easily replaced or removed for future designs.
Ramps 1.4 control board with driver i2c and spi left for future expansion.