When voltage at non-inverting input pin exceeds this reference volatge, output of the comparator goes high (H), otherwise it remains in low (L) state. 2-channel output from U1 is fed to the inputs of ...

Section 3: L293D Motor Controller IC. The purpose of using this IC is to control the direction for the motor and also the speed of rotation of the motor. L293D Datasheet Section 4: LCD Display to ...

To controller this CNC machine we need a microcontroller board called arduino Nano and we need motor driver IC for each stepper motor that is L293D IC.