H-Bridge is a must used for your robot to control the motors… the speed and the direction of each motor. There are many kinds of H-Bridge. For low current DC motor, you can use IC L293D or L298N to drive your motor.
H bridge is an electronic circuit that enables a voltage to be applied across a load in either direction. These circuits are often used in robotics and other applications to allow DC motors to run forwards and backwards. H bridges are available as integrated circuits, or can be built from discrete components.
The term H bridge is derived from the typical graphical representation of such a circuit. An H bridge is built with four switches (solid-state or mechanical). When the switches S1 and S4 (according to the first figure) are closed (and S2 and S3 are open) a positive voltage will be applied across the motor. By opening S1 and S4 switches and closing S2 and S3 switches, this voltage is reversed, allowing reverse operation of the motor.
Using the nomenclature above, the switches S1 and S2 should never be closed at the same time, as this would cause a short circuit on the input voltage source. The same applies to the switches S3 and S4. This condition is known as shoot-through.
Go to this page for complete explanation of H Bridge.
| Title | : | H-Bridge for your robot |
| Category | : | Electronics, Robotics Tutorial. |
| Tags | : | h bridge, h bridge circuit, h bridge schematic, h-bridge diagram, h-bridge motor, h-bridge robot, schematics, |
The word robotics was derived from the word robot, which was introduced to the public by Czech writer Karel Čapek in his play R.U.R. (Rossum's Universal Robots), which premiered in 1921.
According to the Oxford English Dictionary, the word robotics was first used in print by Isaac Asimov, in his science fiction short story "Liar!", published in May 1941 in Astounding Science Fiction. Asimov was unaware that he was coining the term; since the science and technology of electrical devices is electronics, he assumed robotics already referred to the science and technology of robots. In some of Asimov's other works, he states that the first use of the word robotics was in his short story Runaround (Astounding Science Fiction, March 1942). However, the word robotics appears in "Liar!"
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Hi,I have some Questions here.
Compare to L293 motor driver IC, which is the best?
I found it difficult to control the PWM of my power window motor by using L293?
Difficult in the way of i couldnt make it operate in a slow speed but only high speed.
On the internet, i always see lots of projects using small DC motor with L293. Could you give me some opinion on how to operate pwm of my power window motor by L293??
Actually there is a fest in my collage & in that there is a robotics war program,max weight is 25kg so plz help me how to makes robotics for war briefly with digram
you may go to societyofrobots.com for robot war, the complete guide already provided there…
i needed interfacing L293D ic with microcontroller diagram for L293D ic testing
I have a problem. how can i use a power window motor to drive a robot of almost 10kg?
similar with ordinary DC motor. Just use 12V supply…