Uln2003 Logic Diagram. If the digital logic device cannot supply sufficient current then additional circuitry will be required to drive the device. The versions interface to all common logic families.
The darlingtons are reasonably rated to handle current up to 500 ma and voltages up to 50 v. The detailed instruction code wiring diagram video tutorial line by line code explanation are provided to help you quickly get started with arduino. The uln2003 can be effectively used for making a full fledged automatic 7 stage water level controller with indicator as shown below.
The l298n module has a jumper to set its internal 5 volt logic circuits to use either an external power supply jumper off or to use a built in voltage regulator and derive the 5 volts from the motor power supply jumper on.
Uln2004 6 15 v cmos pmos. Uln2003 and 28byj 48 to arduino connections. These versatile devices are useful for driving a wide range of loads including solenoids relay dc motors led display filament lamps thermal printheads and high power buffers. 31 generic stepper motor 32 unipolar 33 bipolar 34 unipolar vs bipolar 4 how to interface stepper motors with pic uc.