Arduino dc motor speed and direction control with l293d. Making a dc motor driver with hbridge technique can use ic l293d as in the article dc motor driver hbridge l293 2 motor dcis. The frequency of clock generation in this case cannot be kept constant so we need to get variable speed for the stepper motor. Interfacing dc motor with pic microcontroller using l293d. The left side of the ic deals with one h bridge one motor and the right side deals with the other. L293d ic is a typical motor driver ic which allows the dc motor to drive on any direction. Share on tumblr the simple line following robot circuit is given here which is constructed using l293d ic, it is a quadruple high current half h bridge driver. Dual hbridge motor driver for dc or steppers 600ma l293d this is a very useful chip. L298n motor driver ic pinout, features, applications and. This video is a small introduction to l293d dual h bridge dc motor driver ic with pin.
Motor driver act as an interface between arduino and the motors. The l293d can drive small and quiet big motors as well, check the voltage specification at the end of this page for more info. Now as shown in the circuit diagram the 555 circuit here is to generate clock or the square wave. L293d hbridge driver is the most commonly used driver for bidirectional motor driving applications. The h bridge will work only if the enable pin is set to logic 1. Arduino gear motor interface using ic l293d motor driver. Dc motor driver with hbridge ic l293d circuit wiring.
L293d is a motor driver or motor driver ic which permits dc motors to drive on either direction. The l293d can drive small and quiet big motors as well. This video explains the detailed working of the l293d motor driver ic. The circuit is based on the ic l298 from st microelectronics. Vdd and vss of the pic microcontroller is not shown in the circuit diagram.
As the name suggests, l293d is a quadruple hbridge, high current motor driver ic. Hbridge is the simplest circuit for controlling a low current rated motor. The most commonly used motor driver ic s are from the l293 series such as l293d, l293ne, etc. Most of the microcontrollers operate on very low voltage 5v and current while the motors require higher voltages and current so, the microcontrollers cannot provide them such higher current. Each channel on the ic can deliver up to 600ma to the dc motor. Dc motor control tutorial l293d motor driver pwm h. Direction and speed control of dc motor in msp430g2553 using l298n l293d and potentiometer. How to use the l293d motor driver arduino tutorial. Bidirectional motor controller circuit using l293d. This ic is a very powerful ic and whenever you will want to control a dc motor or stepper motor or any other motor, then this ic will come in handy to you. In the circuit an arduino uno is used as the platform.
Dc motor driver l293d can be used to control a dc motor. I hope you all will be absolutely fine and having fun. User can use this board for to build their dc or stepper motor based projects like a robotic arm, line follower, land robbers, maze followers and. For this tutorial we will be referring the motor driver ic as l293d only. A single l293d ic is capable of running two dc motors at the same time. L293d motor driver modules usually come with an inbuilt lm317 voltage regulator circuit or similar voltage regulating circuit, along with connectors. This board is capable to drive 8 dc motor or 4 stepper motors at a time.
The l293d device is quadruple highcurrent halfh driver. Dc motor driver l293d can be used to control the dc motor 2 pieces at once. L293d adapter board can be used as dual dc motor driver or bipolar stepper motor driver. Motor driver ic technology robotix society, iit kharagpur. L293d motor driver ic pinout, equivalent ics, features and datasheet. Arduino dc motor control with l293d motor driver ic youtube. An hbridge circuit contains four switches with the motor at the center forming an hlike. This ic consists of 16pins which are used to control a set of two dc motors instantaneously in any direction. L293d is a dual hbridge motor driver integrated circuit ic.
This vs input voltage should not exceed 7 v or it will damage the ic. This is designed to provide bidirectional derive currents. L293d solenoids, dc and bipolar stepping motors, as well as. L293 and l293d h bridge motor driver ic pin out and working. L293d motor driver ic pinout, equivalent ics, features and. As well, this ic can drive small and quiet big motors. You can connect two dc motors having voltages between 4. A complete tutorial for making l293d motor driver module using easyeda pcb and schematic designing tool. There is a pin called enable pin for both the h bridge circuits. The speed is controlled using a potentiometer connected to pin a0 and the direction of rotation can be changed with a pushbutton connected to pin 8.
Pcb designing schematic diagram of l293d motor driver. Furthermore, any queries regarding h bridge motor driver ic l293d or electrical and electronic projects, please give your feedback in the comment section below. Here motor rotation direction can be changed by changing input pins. L 293d is basically a high current dual motor driver controller integrated circuit ic. Generally, these circuits are used in robotics due to its size for controlling dc motors. So if you have motors which has operating voltage less than 36v and operating current less than. When ever you want to drive heavy loads with a small ttl signal you use a transistor, bjt or a mosfet. The l293d ic is designed to drive inductive loads such as relays, solenoids, dc and bipolar stepping motors. L293d and l29ne are the most commonly used motor driver ic, these are designed to control two motors simultaneously. L293d datasheet and pinout h bridge motor driver shield. The l293d is designed to provide bidirectional drive currents of up to 600 ma per channel at voltages from 4.
There is no difference in program or connection vice while using the l293d ic directly or through a module. This integrated circuit ic is a 2channel full hbridge motor driver. It can control both speed and spinning direction of any unipolar stepper motor like 28byj48 or bipolar stepper motor like nema 17. L293d motor driver ic l293d pin diagram working and description. The l293d belongs to a sort of h bridge motor driver shield, quadruple highcurrent halfh driver, used to provide bidirectional drive currents of up to 600 ma at voltages from 4. Arduino dc motor speed and direction control with l293d motor driver. Its the easiest way to go around building a whole hbridge driver from scratch. Line following robot using l293d theorycircuit do it. In this post we investigate the technical specifications and pinout details of the ic l293 which is a versatile quad halfh driver ic, and can be used for implementing many interesting motor driver based circuit applications, such as for operating motors, solenoids and other inductive loads 4 units separately or in pairs through pushpull mode. The l293d provides an easy wireup interface with some decent features. L293ne bipolar motor driver bipolar parallel 16pdip from texas instruments. It is an ic with 8 pins on each side 16 pins altogether which contains 2 free h bridge circuits, which implies, we can control two motors separately utilizing a single ic. As mentioned earlier, in an l293d ic, there are two h bridge circuits.
L293d has a dual hbridge motor driver integrated circuit. It comes in a dip package which fits nicely on a typical breadboard. These circuits are often used in robotics and other applications to allow dc motors to run forwards or backwards most dctoac converters power inverters, most acac converters, the dctodc pushpull converter, most motor controllers, and many other kinds of power electronics use h bridges. Integrated circuits ics pmic motor drivers, controllers. L293d is a 16pin ic which can control a set of two dc motors simultaneously in any direction. L298n motor driver ic has many applications in the embedded field, especially on the robotics side.
You can use it to control small dc motors toy motors. There are two types of supply voltage for this ic vs and vss. Given below is an h bridge motor control and driver circuit using ic l298. This l293d ic allows dc motor to drive on either direction. Today i am going to given elaboration on introduction to l293d. L293d is one of the most popular drivers in the market.
The l293d is a 16pin motor driver ic which can control a set of two dc motors simultaneously in any direction. It means that you can control two dc motor with a single l293d ic. We hope that you have got a better understanding about the concept of hbridge. Vs is meant for its own internal operation and it will not use this input for driving motors. So we need intermediate circuits to connect the controller to the motor, called drivers. A motor driver is an integrated circuit chip which is usually used to control motors in autonomous robots. Hence, we use h bridge ics like l293d to drive bipolar stepper motors. Gear motor is connected to arduino uno via motor driver ic l293d. Pin diagram of l293d the l293d is a 16 pin ic which is known for their efficiency in controlling dc motors. Drive relays, solenoids, stepping motors and switching power transistors. As mentioned earlier, a motor driver ic consists of two hbridge circuits which can be used for controlling two motors simultaneously.
A motor driver ic like l293d or l298 is used for this purpose which has two hbridge drivers. Pricing and availability on millions of electronic components from digikey electronics. Hbridge motor control circuit using l293d motor driver ic. It means, by using a l293d ic we can control two dc motors. Need the current provided by the mcu is of the order of 5ma and that required by a motor is 500ma. This simple circuit is made with the help of single ic that is l293d and few more commonly known components. A bidirectional h bridge dc motor control circuit is shown here. By using this circuit you can construct line follower robot without any microcontroller or without any program codes. L293d ic is same like an h bridge circuit with two channels. In this article, you are going to read in detail about controlling the motors using the l293d motor driver ic. One of the easiest and inexpensive way to control stepper motors is to interface l293d motor driver ic with arduino. In case the circuit becomes complex and you need to drive load with two, three or four ttl signals you use a combination of transistors or mosfet to. Simple stepper motor driver circuit diagram using 555 timer ic.
Logic 01 and 10 will rotate it in clockwise and anticlockwise directions, respectively. This is all about h bridge motor control circuit using l293d ic. It can be used to drive two motors at a time in both the directions with an output current of 600ma for each motor. An h bridge is an electronic circuit that switches the polarity of a voltage applied to a load. So, an l293d is an integrated chip which is used to control motors in autonomous robots and also in embedded circuits. Hence, motor cant be controlled directly by mcu and we need an interface between the mcu and the motor. L293d motor driver module arduino tutorial dc motor control. L293d is a simply a motor driver ic which allows dc motor to drive on either direction. L293 quad halfh driver ic pinout, datasheet, application. L293d motor driver ic l293d pin diagram working and. But, the driver circuit for a bipolar stepper motor requires an h bridge type connection. The l293d can drive small and quiet big motors as well, check the voltage specification at the.
These ics are designed to control 2 dc motors simultaneously. We can drive two dc motors with one l293d, in this example we are using only the first pair of drivers to drive one dc motor. Learn about the motor driver ic l293d with the pin diagram, description, features, example circuit, l293d equivalent,datasheet and ic. In following schematic ic 555 timer acts as a pwm generator and h bridge motor driver ic l293d takes responsibility to drive motor depends on the pwm input signal. L298 is a dual full bridge driver that has a wide operating voltage range and can handle load currents up. In this motor driver circuit, we have used four l293d motor driver ics for driving motors.
It is a dual hbridge motor driver ic and can control two motors simultaneously. Driver ic l293d is available as module and arduino shield. The figure shows the circuit diagram of two stage stepper motor driver. Resistor is connected between the vcc and discharge pin of 555 pin 7. Piggyback l293d ic easily drive high current motors.
L293ne texas instruments integrated circuits ics digikey. L293d dc motor driver ic pin diagram and description youtube. A motor driver ic named l293d is used here for interfacing the gear motor with arduino. In this circuit the robot the will follow a white line on black surface. Information about l293d motor driver icin hinditech. There are several reasons which make l293d the preferred driver to the users, such as, cheap price compared to other drivers, proper shape and size, easy control, no need for protective circuit and. The l293d motor driver s output channels for the motor a and b are brought out to pins out1,out2 and out3,out4 respectively. L293d ic is designed to drive relays, dc motors, stepper motors and other inductive loads with high current and high. The 293d is designed to provide bidirectional drive current up to 600ma a voltage from 5v to 36v. Input logic 00 or 11 will stop the corresponding motor. H bridge motor control circuit schematic diagram using ic l298. Here the simple dc motor speed control pwm circuit is constructed by using ic 555 and motor driver ic l293d.