Comments on: ESP32 with DC Motor and L298N Motor Driver – Control Speed and Direction

By: Brian Mufambirwi

Brian Mufambirwi — Wed, 23 Apr 2025 20:54:06 +0000

In reply to Tracy. Thank you very much. Had to modify it for a single motor, single direction working with an opto coupler and N-Channel MOSFET IRZL 44N. Need help in modifying main loop to include running the motor at maximum speed for 30 Minutes after reaching maximum speed

By: Electromax

Electromax — Fri, 23 Feb 2024 16:40:36 +0000

The L298N has a Three-State Output. When enabled, the output has low impedance; when not enabled, it has high impedance. Consequently, if both outputs are the same and the L298N is enabled, you achieve a fast stop. On the other hand, if the L298N is not enabled and the outputs have high impedance, you experience a free-running stop.

By: Sai Sagar

Sai Sagar — Tue, 16 Jan 2024 19:01:28 +0000

In reply to Vliertemans. can't I just use analogWrite(), instead of going through setting up PWM signal

By: Vliertemans

Vliertemans — Sat, 06 Jan 2024 09:19:30 +0000

Thanks for the great tutorial.
Just wanted to mention there is a small bug in you program.

In the code below the LOW should be connected to motor1Pin1 and the HIGH to motor1Pin2.
// Move DC motor forward with increasing speed
digitalWrite(motor1Pin1, HIGH);
digitalWrite(motor1Pin2, LOW);

By: stanley.rhm@gmail.com

stanley.rhm@gmail.com — Sun, 12 Nov 2023 18:44:29 +0000

it worked for me, im soo happy….now i need to know how to make a car controled by movil or joistick

By: Panagiotis

Panagiotis — Fri, 25 Aug 2023 14:03:43 +0000

In reply to Panagiotis.

update 2: I just found the solution!!! It was as simple as getting rid of all the LEDC commands and replacing ledcWrite(channel, value) with analogWrite(pin, value).

By taking a look at the LEDC documentation by Espressif https://espressif-docs.readthedocs-hosted.com/projects/arduino-esp32/en/latest/api/ledc.html#:~:text=ledcWrite,duty%20for%20the%20LEDC%20channel.&text=chan%20select%20the%20LEDC%20channel,be%20set%20for%20selected%20channel.
I found that there is an “analogWrite” command for esp32 that is fully compatible with the analogWrite command for arduino UNO/NANO etc. Using this command instead worked straight away. There is a few more handy PWM-related commands on that page too.

By: Panagiotis

Panagiotis — Fri, 25 Aug 2023 11:53:42 +0000

update: the example itself works just fine, it’s when I try to incorporate it’s functionality to an ESPnow remote control code that problems arise. I’ve searched for hours but can’t find why this happens.

By: Panagiotis

Panagiotis — Fri, 25 Aug 2023 09:08:13 +0000

Hello. I followed everything in the tutorial exactly but my motor barely even moves. When I put the jumper to the L298N to have 100% duty cycle, the motor spins as it should. But when I try to send PWM from the esp32, the motor barely turns at all. I’ve tried frequencies from as high as 30000Hz to as low as 1Hz. Although frequencies lower than 500Hz did help the motor spin slightly faster, I could never get it to spin at more than 10% speed with PWM. I’d appreciate some help.

By: Eduardo

Eduardo — Mon, 24 Apr 2023 19:11:58 +0000

In reply to Eduardo.

I keep on making mistakes… sorry about that
33.33 µs (micro seconds) 0.00003333 s

By: Eduardo

Eduardo — Mon, 24 Apr 2023 14:21:21 +0000

In reply to Eduardo. Correction: 33.33 ms, not ns