As of May 31, 2023, we have updated our Code of Conduct.

Questions tagged [h-bridge]

H-bridge is common circuit used for applications where there is a need to reverse the direction of current flow. Such application is for example: reversible motor control.

Filter by
Sorted by
Tagged with
0 votes
0 answers
22 views

Sample code for L298N H bridge Arduino Motor Driver not working

I am quite new to robotics, arduinos, motors and that sort of thing so there is a very strong chance I am missing something very obvious. However, I have looked up multiple tutorials online, none ...
Crafty's user avatar
  • 1
1 vote
1 answer
46 views

How to compensate for back drive caused by gravity

I have a 24v DC motor with a planetary gear box, Hbridge, and encoder feedback that drives an arduino robot similar to a winch that moves a weight by spooling a strap up and down. The problem I am ...
bob mcgrath's user avatar
0 votes
1 answer
60 views

6 motors with TB6612 driver + power requirements

I am looking at the ServoCity Bogie platform - it comes with 6 motors. The motor listed specs are: Suggested Voltage: 4.5 VDC No Load Current: 190 mA Max. Load Current: 250 mA I ...
Carol AndorMarten Liebster's user avatar
0 votes
1 answer
208 views

Recommendations and Advice - Motor Driver for 12V Gear Motor with Magnetic Encoder

I am building a robotic insect leg that would be actuated by 2 DC motors for pan and tilt motions. Total weight of the leg is about 1.5kg and 1m long (moment arm ~0.5m). Magnetic encoder would be used ...
Citrusying's user avatar
1 vote
1 answer
75 views

unexpected inefficiency of a motor driver

I purchased one of these motor drivers and noticed that i was not getting as much time from my battery as i had expected. I tested the current draw when connecting my motor directly to the battery and ...
user2105725's user avatar
2 votes
3 answers
2k views

What is the direction of current flowing through the freewheeling diodes in H-bridge if I use BJT?

I am new to electronics.the question is buzzing in my head since i first saw the H bridge configuration.please answer the question briefly
Rakibul Islam Prince's user avatar
3 votes
1 answer
546 views

DC Motor to open a door

I want to open a door using a DC motor. I've estimated that the required power in the worst case would be around 35-40W (considering a ~80% efficiency). The whole is controlled by a Particle Photon. ...
jonathanGB's user avatar
0 votes
2 answers
4k views

Drive motor voltage / other specifications of Roomba 650

I salvaged some parts off my dead Roomba 650, and I'm trying to use the drive motor assembly . I got the pinout of the connector but I don't know what voltage / PWM / other specifications are there ...
Pratik Panchal's user avatar
2 votes
1 answer
152 views

Comparison of the efficiency of DC motor current limiting / control methods?

I am using the wheels and motors of an RC toy car as a simple robotics platform. The car has 2 motors, one drives the back wheels, the other steers the front wheels. The steering motor is stalled by ...
user avatar
0 votes
2 answers
1k views

12V Arduino Dual Bridge to supply at least 5A [closed]

I am looking for a 12V Dual Motor Controller that can supply at least 5A per channel for two 12V motors, and that can be used with an arduino. Do you know of any product with those specs? Thanks
Pototo's user avatar
  • 203
4 votes
1 answer
261 views

What is the purpose of electronic braking in motors?

I have a Micro Magician v2 micro controller. It has a A3906 Dual FET “H” bridge motor driver built in. In the manual it states "Electronic braking is possible by driving both inputs high." My first ...
Titan's user avatar
  • 285
3 votes
2 answers
1k views

Odd L293D behavior: Pin 16 seems to act as enable

I have a chip that is labeled L293D with a small 'ST' logo, which does not behave like I believe a L239D should: I have the chip on a breadboard with pins 4,5,12 and 13 connected to the ground rail. ...
Juergen's user avatar
  • 31
0 votes
3 answers
1k views

H-Bridge using atmega8 microcontroller

I want to use my atmega8 uC as a h-bridge. Can anybody give me the source code using C, so that the microcontroller acts as an H-Bridge.
Nabajyoti Das's user avatar
8 votes
2 answers
2k views

H-bridges and stall current

For a DC motor with a stall current of 950 mA, what should the H-bridge's current rating be? What will happen if we use our H-bridge L293D whose max. output current is 600 mA?
Umer Zonair's user avatar