Linked Questions

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How do I drive 4 motors from a single L293D? [duplicate]

I have 4 DC motors, and I do not need to individually control each of them. Can I connect all the motors parallely to one pair of motor pins on the L293D? Does this pose any issues? I'm using BO ...
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3answers
4k views

Using L293 H-Bridge to drive DC motor with PWM

I want to drive an DC motor with ability both to change direction, and torque. Obvious solution: PWM + H-Bridge. I've been planning to use a PSoC4 for controller, and L293DNE for the H-bridge, which ...
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2answers
11k views

L293D Voltage & Current Ratings

According to the L293 Datasheet, the Maximum Supply Voltage(VCC1)(supply for internal logic translation) is 36V. It is also mentioned that Max Input Voltage(V1)=7V whereas the Max High Level Input ...
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2answers
2k views

H-Bridge flyback diode selection?

I am wanting to make a motor driver using a SN754410 Quadruple Half-H Driver IC. The SN754410 requires external flyback diodes. Here is an example circuit: My question is, how do I choose which ...
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1answer
3k views

L293D overheating

I have an old RC car. I removed all electronic from it, just left the plastic and the DC motors. It has 2 DC motors(1 for moving, 1 for left/right). I decided to attach arduino to it, while ...
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2answers
2k views

Controlling speed of motor through L293D using TLC5940NT

I am trying to control a DC motor through an L293D. Ultimately I am controlling it with an Arduino, but I am trying to use a TLC5940NT chip as an intermediary to increase the number of outputs that I ...
2
votes
3answers
570 views

What type of diode?

I'm using raspberry pi 2 for driving a motor,, using motor driver L293d, through gpio pins of RPI. My question is,if some short circuit happens between input and output of L293d,,12v goes to RPI,and ...
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3answers
1k views

What is the efficiency of a stepper motor driver?

We are using this stepper motor driver (https://www.sparkfun.com/products/12779). In its datasheet, there is no mention of efficiency? How much is the efficiency in motor drivers like these?
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2answers
1k views

Current chopping with an h-bridge and PWM

I have some stepper motors and L298N dual h-bridge drivers. I can't find exact specs for the steppers,* but similar motors from another product line have rated voltages from 2.64v to 5.8v. Since most ...
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1answer
2k views

What is the difference between an H-Bridge Motor Driver and Dual motor driver board?

I don't understand the difference between a motor-driver like this IC H-Bridge Motor Driver and a motor-driver like this Dual Motor Driver Board. When reading about them they do the same thing but the ...
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1answer
2k views

L293d based motor shield not enough power

I'm using a deek-robot motor shield that has a L293D chip (http://www.deek-robot.com/productShow.asp?id=17). I've connected a 12 volt (4A) power back to the VCC input and IN pints to an Arduino ...
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4answers
330 views

uln2003a: Switching ground of device works, however, optional USB function of device doesn't work correctly

I use the uln2003a to switch a device (with use of a MCU) that is capable doing several things, like fm-radio, bluetooth, playing MP3's etc. It also provides an USB ...
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3answers
2k views

Use diode in parallel to increase current

I just realized that some diodes I have are rated for 1A only. I'm planning to wire a l298 chip to some stepper motors that are rated for 1.7A. The datasheet seems to recommend to connect each phase ...
2
votes
1answer
2k views

12V motor running with 24V L293D H-bridge

I have two 12V motors (300 RPM) running from a L293D H-bridge circuit. I find that the speed when I provide 12V is not satisfactory. Will it damage the 12V motors if I provide 18V or 24V? Will they go ...
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1answer
787 views

L298 high side driver: how does this actually work?

I recently took another look at the L298 since some students were having problems (due to the commonly discussed high V_CE-on of the combined high side and low side drivers). One thing that struck me ...

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