Motor drivers are one of the most important component almost used in all of the projects. This ic consists of 16pins which are used to control a set of two dc motors instantaneously in any direction. As mentioned earlier, a motor driver ic consists of two hbridge circuits which can be used for controlling two motors simultaneously. L293d motor driver ic l293d pin diagram working and. The most commonly used motor driver ics are from the l293 series such as. Hello there, i am currently using a single l293d motor driver to control 2 12v dc motors. The pins of l293d motor driver ic are connected to connectors for easy access to the driver ics pin functions. Solder the pins and wires carefully as mentioned below. In this video we have explained the pinout of the ic, and we have also made and explained a basic circuit of a.
L298n motor driver ic pinout, features, applications and. If you dont know what is hbridge and l293d you can simply read this. Motor driver ic technology robotix society, iit kharagpur. A single l293d ic is capable of running two dc motors at the same time. Four quadrant speed control of dc motor with androidand. I am planning on using my setup in an rc vehicle however the 5v supplied from my arduino is too low.
Since motors require more current then the microcontroller pin can typically generate, you need some type of a switch transistors, mosfet, relay etc. Tutorial part 2 this is the second video of the tutorial series. Given below is an h bridge motor control and driver circuit using ic l298. Since were just driving one motor for this tutorial, we wont be using. Its control pins allow us to do the equivalent of swapping over the motor terminals to. My question is about how to calculate power consumption of my chip. Dc motor is connected to output terminals of l293d. L293d is a motor driver 16 pin ic which can be used to run a set of two dc motors at a time. I have used a marker to mark the pins to avoid confusion. Here, the motor driver input pins in1, in2 are connected to the p3. From vcc2 pin the hbridge gets its power for driving the motors which can be 4. The l293d motor driver ic actually has two power input pins viz.
Suppression l293d with a darlington transistor sink and a pseudodarlington source. In order to use an l293d motor driver board you must first understand the fundamentals of how the ic works. I had to replace it in my motorcontrol shield for my arduino, worth every cent i purchased few extra chips for my next screw up. I am planning on using a 12v power supply then with a lm7805 voltage regulator step down the voltage to my nano to 5v. 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. Vdd and vss of the pic microcontroller is not shown in the circuit diagram. The l293d is a dualchannel hbridge motor driver capable of driving a pair of dc motors or single stepper motor. L293d is a 16 pin motor driver ic consist of quadruple half h drivers. L293d is one of the most popular drivers in the market. Controlling a dc motor using l293d motor driver board.
L298 is a dual full bridge driver that has a wide operating voltage range and can handle load currents up. Gear motor is connected to arduino uno via motor driver ic l293d. L293d motor driver ic l293d, is a motor driver ic which allows the motor to drive on either direction. Rakesh mondals projects and tutorials on microcontroller, pic, robotics, arduino, sensors, usb interfaces, pic18f4550, motor driver, l293d, ic 7805, and stepper.
Hbridge motor control circuit using l293d motor driver. It means that we can control two dc motor with a single l293d ic. The workings of the individual pins are explained in detail, later in the tutorial. This gives us a clue as to how the l293d chip works. A bidirectional h bridge dc motor control circuit is shown here. L293d is a 16pin ic which can control a set of two dc motors simultaneously in any direction. It can drive two dc motors, relays, solenoids, etc. So if you have motors which has operating voltage less than 36v and operating current less than. L293d is a simply a motor driver ic which allows dc motor to drive on either direction. There are 4 input pins for l293d, pin 2,7 on the left and pin 15,10 on the right as shown on the pin diagram. I will interface it with a pic18f4550 microcontroller and demonstrate its working to drive a dc motor. L293 and l293d h bridge motor driver ic pin out and working.
What are the unused pins in an arduino l293d motor shield. 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. Drivers are enabled in pairs, with 2 applications drivers 1 and 2 enabled by 1,2en and drivers 3 and 4 stepper motor drivers enabled by 3,4en. L293d dc motor driver ic pin diagram and description. I will interface it with a pic18f4550 microcontroller and demonstrate its working. My chip consists of 1 arduino nano and 3 l293d motor driver. Push one side of the wire next to pin9 and the other side to a hole above the socket as shown below. H bridge motor control circuit schematic diagram using ic l298. L293d solenoids, dc and bipolar stepping motors, as well as. Motor driver and hbridge basics generally, even the simplest robot requires a motor to rotate a wheel or performs particular action. The circuit is based on the ic l298 from st microelectronics. Driving a dc motor with an arduino and the l293d motor driver. In this arduino tutorial let us see how to drive motors using l293d with arduino uno. L298n motor driver ic has many applications in the embedded field, especially on the robotics side.
L293d motor driver module arduino tutorial dc motor control. They are connected to the input pins of the l293d motor driver ic pins 2, 7, 10 and 15 respectively. L293d is a suitable device to use for stepper motors, gear motors etc. The most commonly used motor driver ics are from the l293 series such as l293d, l293ne, etc. A motor driver is an integrated circuit chip which is usually used to control motors in autonomous robots. The dc motor runs through l293d motor driver ic with varying duty cycle applied to enable pin1 of l293d being fed from the micro controller for speed control. It can simultaneously control the direction and speed of two dc motors. Arduino gear motor interface using ic l293d use arduino. Each output is a complete totempole drive circuit, with a darlington transistor. L293d dc motor driver ic pin diagram and description youtube. I searched for about voltage settings of arduiono nano and l293d motor driver, but there are many phusical thinks that i cannot understand. Left input pins will regulate the rotation of motor connected across left side and right input for motor on the right hand side. To understand the working of l293d, we first need to know about a component called hbridge.
L293d chip is a very populer ic for controlling motors via mcu. Pins 10 to d8, d9, d10, and d11 of ht12d are the parallel data out pins. For this tutorial we will be referring the motor driver ic as l293d only. Basically this means using this chip you can use dc motors and power supplies of up to 36 volts, thats some pretty big motors and the chip can supply a maximum current of 600ma per channel, the l293d chip is also whats known as a type of hbridge. Controlling a dc motor with raspberry pi and python. L293d motor driver ic with arduino in this article, you are going to read in detail about controlling the motors using the l293d motor driver ic. Below, youll see a pin diagram of the l293d note the location of each of the pins, relative to the notch at the top. These ics are designed to control 2 dc motors simultaneously. This video is a small introduction to l293d dual h bridge dc motor driver ic with pin diagram. Hand gesture controlled robot using arduino circuit. The l293d can drive small and quiet big motors as well, check the voltage specification at the end of this page for more info along. The l293 and l293d models can drive current up to 1a and 600ma respectively.
L293d motor driver ic l293d pin diagram working and description. Motor conteol circcuit acts as a bridge between the above motors and ics. The lcd data pins connected to the microcontroller to display the percentage of speed at which the motor is running. As the name suggests it is mainly used to drive motors. Add a red wire or any color to connect pin9 to enable pin. The l293d is a dual full bridge driver that can drive up to 1amp per bridge with supply voltage up to 24v. Hbridge is the simplest circuit for controlling a low current rated motor. L293d motor driver and controlling motor using pwm. L293d has output current of 600ma and peak output current of 1. In the tutorial introduction to l293d, i have shared all the necessary details about l 293d motor controllerdriver which includes its pinout diagram, applications, features, functional and logic diagram, packages etc. L293d is a motor driver ic which can allows 2 dc motors on either direction. An hbridge is an electronic circuit that switches the polarity of a voltage applied to a load. 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. Arduino gear motor interface using ic l293d motor driver.
This motor driver is designed and developed based on l293d ic. An l293d has 4 input pins, 4 output pins, 2 enable pins, vss, vcc and. Interfacing dc motor with pic microcontroller using l293d. One is taken from datasheet by stmicroelectronics and other is from texas instruments. This chip is for controlling motors and other equipments. Besides that, with this l293d driver motor it will control four dc motors at one time but with fix direction of motion. Pin 1 and pin 9, for being able to drive the motor, the pin 1 and 9. Dual hbridge motor driver l293d ic building the circuit part ii.
Functioning of l293d motor driver electronics club, iit. L293d motor driver ic pinout, equivalent ics, features and. The major components in the above circuit diagram are at89c51 microcontroller and motor driver. L293d is a 16 pin ic which can control a set of two dc motors simultaneously in any direction. Here is a brief description of the functionality of each pin in ic pin 1 enable 1,2 this pin is set high in order to enable output at pins 3 and 4 i. Given below is the pin diagram of a l293d motor controller. En1 pin is connected to the 5v dc to drive the motor. The pin diagram of the l293d motor driver ic, along with the pin description is shown in the following image. L293d ic is a typical motor driver ic which allows the dc motor to drive on any direction. In the tutorial introduction to l293d, i have shared all the necessary details about l 293d motor controller driver which includes its pinout diagram, applications, features, functional and logic diagram, packages etc. Two phase motor driver, block diagram of l 293d application for two phase motor is given in the figure shown below. The design of the circuit for controlling a dc motor with raspberry pi is very simple. In the given diagram, the arrow on the left points to the higher potential side of the input. It means that you can control two dc motor with a single l293d ic.
First, connect the pins 8 and 16 vcc2 and vcc1 of l293d to external 5v supply assuming you are using a 5v motor. Learn about the motor driver ic l293d with the pin diagram, description, features, example circuit, l293d equivalent,datasheet and ic dimensions. This video is a detailed explanation on l293d motor driver ic. Here you know about h bridge motor control circuit using l293d ic and its working. 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 diodes, no need for heat sinks and good resistance to temperature and highspeed variations. This is designed to provide bidirectional drive currents at voltages from 5 v to 36 v. As well, this ic can drive small and quiet big motors. Hbridge motor control circuit using l293d motor driver ic. L293d motor driver ic pinout, equivalent ics, features and datasheet. It means, by using a l293d ic we can control two dc motors. Vcc1 is used for driving the internal logic circuitry which should be 5v.