CONTROL MOTORS USING L293D AND ARDUINO

The L293D motor driver IC

A motor driver IC is an IC chip used to control motors simultaneously and in a bi-directional manner. In a robot, it acts as an interface between microprocessors and the motors. The L293D is one of the most commonly used motor drive IC’s. It is composed of 2 H-bridges. An H-bridge is the most basic circuit for controlling low current motors. The L293D has 16 pins as listed below;
  • Ground pins-4
  • Input pins-4
  • Output pins-4
  • Enable pins-2
  • Voltage pins-2

Motor Driver IC’s are mostly used to control motors of autonomous robots. After trial and error, I managed to come up with a simple but efficient way to control two small motors using the L293D and Arduino.

Items required

Circuit


Connect the components as shown above. The connection is pretty easy and fast. You can power L293D using an external power source with up to 36V. However, ensure you do not impart more volts that the motors can take lest you burn them.

The Code

You could also modify the code for different types of controls, for instance, you could use analogWrite (pin, PWM value) in place of digitalWrite(pin, HIGH/LOW) so as to control motor speeds.
If you have implemented this successfully, congratulations! You now know how L293D alongside an Arduino Uno can be used to control DC motors.

Source : http://blog.enrgtech.co.uk/control-motors-using-l293d-arduino/

Comments

Post a Comment

Popular posts from this blog

Little Know more about Brush-less Motors

Image
Brushless motors Brushless differs from conventional dc motors in the sense that it does not have brushes. Commutation is done using electronic drives to feed power to the stator windings. They consist of a rotor which is in the form of a permanent magnet and a stator that is in the form of polyphase armature windings. A  brushless DC motor  can be constructed in two ways; one is by placing the rotor outside the core and the other is by placing the rotor inside the core. How a brushless motor works Brushless motors are driven by electronic drives that  switch  the supply voltage between the stator windings while the rotor turns. There is a transducer that monitors the position of the rotor as it turns and conveys the information to an electronic controller. The controller then decides which stator winding to be energized based on the position of the rotor. Electronic drives are made up of two transistors each phase which is run by a microprocessor. The magnetic field i
Read more

LED Modules: Manufacturer,Types and Application

Image
LED Modules Light-emitting diodes (LED) modules are LED self-contained devices that are designed to either function on its own or to plug into a compatible unit. These modules are mostly used in the development of both energy-efficient and portable lighting.  An LED contains several LED bulbs that are connected to a fixture that contains a battery or an alternative power supply which powers all the bulbs contained therein. LED modules can either emit white light or emit different colours based on the material they are made of. They are prominently used for advertising and signages but could as well be used for other purposes due to their versatility. Types of LED modules There are a variety of LED modules available in the market. There no specific parameters that can be used to categorize LED modules . They can be categorized in terms of efficiency, form, CCT, colour among others. Some of the common ones used in signage and advertising include; Side LED modules
Read more

Block-chain: A Complete Beginners Guide | Block Chain Technology

Image
Blockchain technology Blockchain technology is barely three decades old, but it has completely changed global money transfer as we know it. It was first conceived in 1991 by a group of researchers who originally intended it to be used to timestamp digital documents to make it impossible to tamper with them. This concept was first put into actual use in 2009 by Satoshi Takamoto to create Bitcoin. Bitcoin has since spurred the adoption of  blockchain technology  for cryptocurrency, medical records, and land records among others.  What is blockchain? A blockchain is a network of computers that share a digital ledger that is duplicated and distributed across all participants in the network (nodes). That is to say that each node on the network has a duplicate copy of the ledger. The digital ledger keeps a chain of transactions since the creation of the network. The chain of transactions keeps growing as new blocks of transactions are approved and then added along. Before a new
Read more