Questions tagged [l293d]

For questions about the L293D quadruple half-H driver integrated circuit.

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Motor rotates well in one direction but runs slower in other with L298N and L293D [closed]

I connected two motors with an L293N driver. When I control it with my joystick, one motor works fine (Out 1 and 2 of driver). It rotates in one direction and the other very smoothly. The problem ...
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0 votes
2 answers
68 views

How to Limit Current Using L293D?

I’m designing a circuit to control 4 electromagnetic coils and subsequent orientation of a sphere (pic attached below). I’m new to EE but thanks to this forum I’ve learned what and how to utilize PWM ...
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43 views

I’m using the L293D IC as a driver, controlled by an Arduino board. Should I be worried about setting both inputs low?

Should I be worried about setting both inputs high? It seems that the simulation I made with Tinkercad doesn’t care of a short circuit happening, that’s why I need a word from an expert I posted the ...
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2 answers
36 views

Problem interfacing stepper motor with Atmega 32

I have been trying to interface a bipolar stepper motor with an ATmega32 controller using AVR assembly, but it just keeps clicking without movement or just move back and forth in the same step. Here ...
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0 votes
3 answers
103 views

Using relay instead of L293d

I want to control a dc motor that I have . I don't need any speed or direction control just plain on/off. I was wondering if using a 5v dc relay is better or worse. My only requirement is to have as ...
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0 votes
1 answer
29 views

L293D Logic Current leak

I connected my arduino to L293d and then to a small water pump. I noticed that even when motor power suppply was off, the motor was running at low speed possibly drawing current from Arduino pins. ...
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1 vote
3 answers
78 views

Can L293D be used for this motor? [duplicate]

Specs for the motors: At 3VDC we measured 150mA @ 120 RPM no-load, and 1.1 Amps when stalled. At 4.5VDC we measured 155mA @ 185 RPM no-load, and 1.2 Amps when stalled At 6VDC we measured 160mA @ ...
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1 vote
2 answers
229 views

L293D and PWM speed control

I'm using L293D to control a motor. The motor input pin of L293D is controlled by output pins of HT12D IC. To control the speed of the motor I have a PWM signal from Arduino, but to which pin of L293D ...
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  • 70
0 votes
2 answers
64 views

Driving a 6v 250ma motor by using 12v 2A adapter

I am trying to use 4 motors(3-6V 250ma) controlled through 2 L293D Motor drivers. I have a 12V 2A adapter to supply VCC to the motor drivers. I am looking for a way to power my motors without damaging ...
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2 votes
1 answer
49 views

Circuit power issues causing LCD to change brightness when motor operates

My apologies I'm still getting to grips with the more advanced aspects of electronics, so apologies if this is a stupid question! I'm building a sensor device with a Raspberry Pi, and have got ...
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1 answer
80 views

Arduino obstacle-avoiding car

I have built an Arduino obstacle-avoiding car. After uploading the code, the car does not move. It beeps for three seconds, waits three seconds and repeats continuously. I am using a 9V battery ...
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2 answers
241 views

Why use L293D if you don't need to reverse the motor?

Basic question about L293D, which I could not find a clear answer by searching the internet. Still learning with my arduino project. The examples are good at describing how to use things and how to ...
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1 vote
1 answer
79 views

Connecting different DC grounds to a single motor driver IC

I'm building a simple robot and have a L293D motor controller (details here and diagram below on the left). It takes two positive input voltages - one for powering the IC and one for driving the ...
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0 answers
38 views

L293D (Motor Driver sheild. ) Overheating issue [duplicate]

I really do have a doubt. Actually I'm making Vplotter and for that I'm using 333nNm 0.31 A Stepper motor NEMA 17. And I'm giving an external supply of 5V and 1 A to motor driver sheild. Will L293D ...
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0 votes
1 answer
109 views

Bi-directional motor control with 3 push buttons [duplicate]

I am trying to create a system where there are 3 input buttons (PTM) and a dc motor output. The motor needs to be bidirectional. The 3 buttons are: forwards, stop and backwards. once the forwards or ...
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0 answers
165 views

This L293D just blew up. Can someone pease help me figure out why?

I was using a motor driver breakout board with a L293D IC on it, along with a 7805 voltage regulator and a couple of capacitors. I have een using it for 4-5 months and the wire connections stayed the ...
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24 votes
6 answers
31k views

Why do we use capacitors in parallel with DC motors?

Below is the circuit diagram of an L293D motor driver IC driving 2 12V DC motors. What I don't understand is the use of the capacitors marked 104 in parallel with the motors.
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L293E, voltage difference exists between output 1 and output 4, yet it can't drive a small motor

I'm using L293E to drive one motor in two direction. Output 1 and output 4 are connected to the motor and I alternate Input 1 (1A) and Input 4 (4A) between VCC and GND. (never input1 == input4). Vs ...
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0 votes
1 answer
635 views

Attiny85 crashes when I run a motor through an L293D

I'm trying to run a motor through an L293D turned on and off by an Attiny85. The Attiny85 has the micronucleus bootloader on it, which is why pin 3 is connected to a pull up resistor. On the Attiny ...
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1 vote
1 answer
177 views

Why ACS712 is abruptly dropping its voltage output?

I have built a board as shown in the images and the schematic below. I know that according to the datasheet when no current is flowing through the ACS712 it should output something around 2.5V always. ...
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0 votes
2 answers
710 views

L293D DC motor affecting LCD display

In the circuit below, I have noticed that when the DC motor (12V) is disconnected, everything works nice. The LCD correctly displays what arduino sends to it. But ...
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0 votes
2 answers
86 views

Can a L293D H-bridge be used for this application?

I'm building a circuit that is needed for a logging device we have. With some of our sensors the current is going in one direction and with others the other way around. That means that we have a ...
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0 votes
0 answers
311 views

Microcontroller resets with motor driver (L293D)

I am making a simple robot with 2 BO motors driven by L293D on ATmega328P (took out from Arduino Uno). The robot when tested on Uno works fine. But when I put it on the board that I have designed (as ...
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2 votes
1 answer
169 views

Two 9 V batteries in parallel

I don't know where else to ask this question and I think this is the best place so I'll ask here. I'm making a remote controlled boat that uses two DC motor controlled by a L293D motor driver chip. ...
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1 vote
1 answer
4k views

What is this triangle symbol representing?

I am getting started with electronics and decided to learn about the inner workings of the L293D. However, I found a symbol I don't recognize, which is the triangle with 3 connections. There are four ...
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2 answers
226 views

L293D all inputs high

I want to use the L293D to control 2 motors forward/backward. My question is if I set all inputs (A) high, do I have a short circuit? Because the driver gets really really hot.
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2 votes
0 answers
396 views

Can't get L293D to work with raspberry pi zero w

I have the following When i turn GPIO 17: high GPIO 22: high GPIO 27: low or GPIO 17: low GPIO 22: high GPIO 27: high ...
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1 vote
1 answer
149 views

L293D for 24 volt circuit [closed]

simulate this circuit – Schematic created using CircuitLab I am using a L293D to light up LED's. I provide a 24 volt To light up my LED's. Courant comsuption of each LED is 30 mA. The maximum ...
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0 votes
1 answer
647 views

Control a dosing pump with raspberry pi zero w

Hi i have a few "Peristaltic Pump Dosing Pump 6V DC Motor" with the following specs: DC: 6V Non-load current: 100mA So the idea was to control it with a ...
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  • 137
0 votes
2 answers
824 views

Is it possible to drive a 12V DC motor with XL6009?

I am a beginner in robotics. I am planning to drive a 12V DC motor from Raspberry Pi 2 B. I know Pi does not have that capacity to drive such a device, so I am using L293D motor driver to control the ...
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0 votes
1 answer
3k views

Control of 12V stepper motor using L293D dual H-bridge

I've been trying to get a new 12V stepper motor to turn using the circuit below. I connected the 12V to the IC but this led to my Arduino smoking and burning out. I'm thinking that the 12V is being ...
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-1 votes
1 answer
178 views

Connect Multiple L293D Motor Controllers to Arduino

I would like to connect 3 L293D Motor controllers to an Arduino Uno with the hopes of powering 6 different dc motors. I was just wondering how to wire this being that one motor controller (which ...
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2 votes
1 answer
586 views

L293D and PWM on enable pin: TTL voltage drops to 4 Volts

I'm building a simple motor shield for Arduino based on the L293D bridge driver. I'm doing some tests on a breadboard everything is fine as long as I drive the motor at full throttle with DC inputs (...
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  • 127
0 votes
3 answers
866 views

Arduino is not getting power from adapter or Vin

Hi I am very much new to electronics, specially micro controllers and stuff. I am a Java/Android programmer by profession. I am currently creating a autonomous robot but I am stuck due to a problem. ...
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0 votes
1 answer
496 views

ESP8266 controlling RC car. Voltage drop, ESP shuts down when I increase motor speed

I am preparing remotely controlled RC car using Android phone and ESP in TCP client/server configuration. I power it using 4x AA 1.2V batteries (2500mAh). The problem occurs when I try to accelerate ...
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0 votes
1 answer
356 views

Connect LM324 to L293D [closed]

I would like to control the motor direction using an LM324(as a window comparator) & an L293D. the two output pins of my LM324 go to the Logic input pins of the L293D. The output voltage of the ...
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0 votes
2 answers
13k 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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1 vote
0 answers
48 views

How to set up L293D - correct solution? [duplicate]

I want to control DC motors with L293D IC using my Raspberry Pi. I wanted to set it up similarily to this: But then I found one article on Instructabiles, which said that it would work, but correct ...
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0 votes
1 answer
676 views

Enable-A and Enable-B of H-Bridge L293D (or L298N)

I am using both L293D and L298N for controlling the stepper motor NEMA17. It rotates and stop as expected. I am not sure about the usage of Enabling provided by the L293D bridge. In this attached file ...
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-1 votes
1 answer
61 views

Does controlling 2 or more motors needs a regulator?

I have successfully controlled my stepper motor with a L293D and Arduino. Now I want to add more motors (up to 3) each with it's own L293D driver. I'm using a single separate power supply for the ...
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0 votes
1 answer
811 views

L293D Motor driver 'braking' using input pins

I read the following on Wikipedia: Using pins 2 and 7 ( 15 and 10) to determine motor START/STOP or PWM duties it's dangerous, since there wouldn't be high impedance outputs: Current would flow ...
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0 votes
1 answer
458 views

Trouble Driving a Solenoid with a LiPo Battery

I am having trouble getting enough current to drive a bi-directional solenoid with two leads. I am using a half of a L293 (Quadruple Half-H Driver) to drive the solenoid back and forth. The solenoid ...
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0 votes
1 answer
746 views

Motor not strong enough to move buggy

For my A2 final project, I am making a buggy that can be programmed using an onboard control panel. I have a GENIE E18 PIC Microcontroller to control the ins and outs, with an L293D Motor Driver to ...
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1 vote
1 answer
2k views

Does VSS (Logic Supply Voltage) on a L293D need to be connected for the IC to work?

Here is my breadboard using an L293D . Pin 16 (VSS) is at the top right. I'm trying to have my project operate in sleep mode drawing as little current as possible. When I added the IC, my draw ...
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2 votes
3 answers
808 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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0 votes
2 answers
100 views

Replacing 5 V pin with battery not working

I have a small breadboard that has a L293D motor controller and 2 DC motors. The board is hooked up to a Nordic DK and everything on the PWM side is fine. The breadboard is powered by the development ...
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-2 votes
1 answer
459 views

driving 10A motor [closed]

I have made a wireless robot with ht12d/e and l293 ic and i have used two type of motors. first motor(plastic geared) was working ok with l293(i.e it was working at 1A) second motor(johnson geared ...
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2 votes
1 answer
2k views

Pin with no driver - Kicad

I'm new to Kicad and I'm having some problems using Eeschema. Every time I connect a power source to an IC pin, in this case the L293D, I get the following error: ...
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  • 121
3 votes
0 answers
2k views

L293D 2 Phase Bipolar Stepper Motor

I have an M35SP-11NK stepper motor that I would like to be able to drive with an L293D driver chip. The circuit below is how I've got it wired up so far. I've derived this from numerous sources on the ...
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  • 747
35 votes
2 answers
13k views

Problems with L293, L298 and SN754410 H-bridge drivers on a low voltage supply

This question is about the following three integrated H-bridge drivers: - L293 or L293D (D = protection diodes added) SN754410 (protection diodes included) L298 (no protection diodes) Time after ...
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