Jetson Nano GPIO

[@alidollar1994]

Really appreciate your effort, the only place i can find tutorials for Jetson Nano. Hoping to see and learn more.

[@JetsonHacks]

I am glad you find the videos useful. Thanks for watching!

[@SasteJugaad]

can i change any another pin to PWM pin. I want to add two l293d motor drivers with the gpio directly any solution for that. I am able to run the motors but i need pwm for speed control.

[@JetsonHacks]

A recall that pins 32 and 33 are for PWM. For further information, please ask your question on the official NVIDIA Jetson Nano forum where a large group of developers and NVIDIA engineers share their experience.

[@satchelfrost6531]

Hey btw, they sell acrylic cases for the jetson nano now. Just wanted to let you know in CASE you were interested.

[@JetsonHacks]

Oh my, PUNishment. Thanks for watching!

[@AltMarc]

or make your own case : kzbin.info/www/bejne/g4bPfKyIjpiojtE

[@Bwajster]

What pins other than the two PWM pins (32 and 33) of the GPIO and the PWM pin of the J15 header be used for PWM resources on the jetson nano?

[@JetsonHacks]

I don't know. You should ask on the Jetson forums. If you need more PWM pins, you should be using a microcontroller or PWM board that can handle the real time signals required to generate the pulses. The Jetson operating system isn't great at real time control like that on the Nano.

[@Bwajster]

@@JetsonHacks I can connect an arduino to the nano, and use the PWM pins from the arduino right?

[@JetsonHacks]

@@Bwajster Yes.

[@edsonlopez4134]

Looking to work on a Xavier module. Great tutorial, man. I hope to see more videos coming soon because I need to learn to use it.

[@Bwajster]

Does the pwn pin of the j15 header on the jetson nano operate at 3.3V or 1.8V ?

[@JetsonHacks]

I believe it is 3.3V.

[@fgiraffe8751]

Great video, my favorite so far thank you. Is there a C language library to access the GPIO pins like this, or would just accessing it via sysfs be the way to go?

[@JetsonHacks]

You are welcome. Since kernel version 4.8 the sysfs interface is deprecated. You should use the character device instead. The recommended way is to use libgpiod which uses ioctl calls. Thanks for watching!

[@timd7196]

Excellent video, love the background and detail. Right now my project is stuck on getting UART communication between nano and emic2 (tts module) so I'm looking forward to your UART video! (Your website is super great too!)

[@JetsonHacks]

Thank you for the kind words. UART can be a little tricky, hopefully we'll be able to figure it out. Thanks for watching!

[@timd7196]

@@JetsonHacks Getting UART to work on an ATMEGA controller was simple, but having to work through LinuxTegra4 on the nano makes it tricky indeed!

[@JetsonHacks]

You do know that the emic2 is a 5V device and the Jetson Nano UART is 3.3V? Just as on a Raspberry Pi, you need some type of level converter to match them up.

[@timd7196]

@@JetsonHacks Ah, you're right. Looking at the data sheet again, I see that SIN is 3.3-5V but SOUT is 5V only. I have a 3V voltage regulator lying around perhaps that will do it. Thanks!

[@shubhamcyborg9218]

Plz make servo ,stepper, dynamixel tutorial....that's we need most ....👷‍♂️😅

[@JetsonHacks]

That's a pretty wide request, all of them are different depending on their use. Did you have a particular application in mind?

[@shubhamcyborg9218]

@@JetsonHacks thanks a lot for responding!!🤩 Yeah!! Actually I m trying to make object detection based pantilt project as u can see here m.kzbin.info/www/bejne/r37chmedgdKrb6c Now this network is processing on my PC , for robot applications we don't have board so far(affordable)....but now we have jetson nano which has computing power ...and dynamixel is super fast so that will be amazing.... It is top (head) part of my humanoid robot build project!! Again thank for responding 🤩🤩

[@edithhealthcare4862]

@@shubhamcyborg9218 idea is amazing 👍👍👍but again dynamixel is not affordable 😂

[@shubhamcyborg9218]

@@edithhealthcare4862 that's right but I thing AX-12 model is affordable.....😎

[@JetsonHacks]

The Dynamixel servos use RS-485. The easiest way to communicate with them is through a USB to RS-485 converter, such as the DYNAMIXEL U2D2. This is much different than hobby grade servos, which tend to use PWM.

[@thomascahill5963]

Hello, several questions: your link is to the Fluke 117 but I see you are using the 115, any reason in particular? Is the I max for the gpio 1mA? Did this info come from other Jetson devices? If you flip the E and C like for the 2N2222, will the magic smoke emerge? Well done video.

[@JetsonHacks]

Thank you for the kind words. I think I just copied an older link from another article on the 117, I will update to the 15. NVIDIA general quotes 1mA for the pin current on the GPIO pins, but on some Jetsons that can be as little as 20 microA, depending on the wiring. I haven't gone through the schematics enough to have a full understanding. In general, you can think about these transistors as two diodes, the current only flows in one direction. However, I don't think people recommend reversing the wiring on them. It may let the magic smoke out, it may not. For inexpensive parts like this, it's hard to tell what the tolerance is for abuse. Thanks for watching!

[@ablasttv]

Your site is one of the main sources of this Pinout image, is it still valid for the upgraded B01 version of the Nano? Or only A02?

[@JetsonHacks]

Both of the Jetson Nanos are the same pinout

[@robbyprust]

Very interesting, just getting my nano setup and will going through this . Been doing a lot with arduino but wanted something with a little more power and flexibility. Thanks for these videos they are being very helpfull

[@SasteJugaad]

I dont have jetson-io folder in my nanao. I dont want to reflash my nano again. Where can i find it. PLease help

[@JetsonHacks]

jetson-gpio is available on Github. Thanks for watching!

[@onjofilms]

Love your intelligent videos.

[@JetsonHacks]

Thank you for the kind words, and thanks for watching!

[@makersgeneration3739]

Thanks for the video. That reminds me of electronics school and college, law of hom. I was eating that all day long. 😄😄😄

[@JetsonHacks]

I think you'd be full after a single bite. But it is useful at times. Thanks for watching!

[@AndrzejOlchawa]

How would you connect a motion sensor or any other typical arduino sensors?

[@JetsonHacks]

It depends on the sensor.

[@kdsbored]

Hey. I have a couple of dev kits. And now looking to test out nano’s production module. Will the dev kit reference carrier board work for flashing production module?

[@JetsonHacks]

Hey. Yes. Thanks for watching.

[@kdsbored]

@@JetsonHacks Wow you reply so fast. Is there any way to contact you by emails for more doubts? I am a student from india and new to jetson community. Thank you for helping.

[@JetsonHacks]

@@kdsbored Please ask for help on the official NVIDIA Jetson forums, where a large group of developers and NVIDIA engineers share their experience. It is rare that I get to answer many of the questions asked. BTW, you will need a Jetson B01 developer kit (the one with two camera slots) to be able to flash your module.

[@Person_of_Intrest]

Hi, I have a RADAR Sensor module that goes to GPIO interface,is it similar way of connecting it like PIR?

[@JetsonHacks]

It depends on the sensor module. Thanks for watching!

[@juanpalaciosvargas7329]

I'm trying to follow all the tutorial, but I couldn't put in "True" or "False" the GPIO pins. Is there any other kind of configuration I have to do before? Please, I'd like your answer. Moreover, I tried measuring voltage betwen the pins 2 and 6, but I got 0 volts with my voltimeter.

[@JetsonHacks]

I don't know what "I couldn't put in True or False" means.

[@juanpalaciosvargas7329]

@@JetsonHacks I mean, I've tried to set the GPIO as digital output, but I couldn't set the GPIOs in True (1) or False (0).

[@JetsonHacks]

@@juanpalaciosvargas7329 How are you attempting to set them? Do you have permissions set correctly? What circuit is attached to the pins?

[@juanpalaciosvargas7329]

@@JetsonHacks I follow this code: $ sudo su $ cat /sys/kernel/debug/gpio $ echo 79 > /sys/class/gpio/export $ cat /sys/kernel/debug/gpio $ echo out > /sys/class/gpio/gpio79/direction $ echo 1 > /sys/class/gpio/gpio79/value $ echo 0 > /sys/class/gpio/gpio79/value But, I haven't be able to activate the GPIOs. Even, I get no voltage between pins "5V" and "GND".

[@gregoryM101]

Good video, thanks. Would you consider doing an I2C video between a Jetson Nano and an Arduino? For example, a specific thing is detected in the camera feed and the coordinates of the object are sent to the Arduino for some type of action.

[@fredrichoerr6514]

you are just the best

[@JetsonHacks]

Thank you for the kind words, and thanks for watching!

[@boxedowl]

Awesome video! Thanks for posting.

[@JetsonHacks]

You are welcome, thanks for watching!

[@jesuscardona5184]

You are the best. Thanks

[@JetsonHacks]

No, YOU are the best! Thanks for watching!

[@Bwajster]

How to configure the pwn pins of the jetson nano to generate a trigger pulse with pulse width of 100mSec?

[@JetsonHacks]

Have you tried this: kzbin.info/www/bejne/m3rQdYRmhbuoaLssi=waa4G9WMbXr6nqvD

[@georgesmarkus]

Thank you, very nice intro

[@JetsonHacks]

You are welcome, and thanks for watching!

[@fpgamachine]

Thank! Your videos are great!

[@JetsonHacks]

Thank you for the kind words, and thanks for watching!

[@rickhunt3183]

While this looks simple and useless to some. This one thing can open up a whole new world for physical programing. The led could easily be replaced with a relay. I'm not going to steal your thunder, but what I do for finding the led resister value is.. supply voltage - led voltage divided by the required current = the required resistor. Maybe you did the same thing. I don't know. I couldn't see the calculation very well do to a small screen..Peace out dude and keep on rock n .

[@JetsonHacks]

That's about right. As explained in the video and the attached article, it's the forward voltage and current of the LED: (voltage - forward voltage)/forward current. This is (5-2)V/.020A = 150 ohms. Thanks for watching!

[@furkantoptan6767]

Hello.I am using nvidia jetson recomputer j1020.There is a Jetson nano inside. Jetson.GPIO or RPI.The GPIO does not work healthily.I'm constantly getting warnings like this, and the engine is not working.Warnings; (WARNING: Carrier board is not from a Jetson Developer Kit. WARNING: Jetson.GPIO library has not been verified with this carrier board, WARNING: and in fact is unlikely to work correctly.).Do you have any idea how I can start the engines?I would appreciate it if you could help.

[@JetsonHacks]

Does the GPIO work at all? I don't know what "work healthily" means. Your best bet is to contact the manufacturer for the reComputer for help. The warnings only indicate that it is not a NVIDIA developer kit, and are not errors. You may be able to get help on the official NVIDIA Jetson Nano forum, where a large group of developers and NVIDIA engineers share their experience: forums.developer.nvidia.com/c/agx-autonomous-machines/jetson-embedded-systems/jetson-nano/76

[@asyuwish4309]

does jetson nano and raspberry pi are both the same the way they can be program using python? thanksss

[@JetsonHacks]

Both the Jetson Nano and RPi share the same pinout. The Jetson.GPIO and RPi.GPIO Python libraries are compatible except for PWM. The RPi has PWM accessible PWM, the Nano does not. Thanks for watching!

[@soumitradey8208]

Dear Sir Thanks so much for your knowledge sharing. I would like to learn on integrating rplidar with jetson nano and in turn controlling robot motors for a delivery robot. I followed every step shown by you on the racecar RPlidar and was successful in completing catkin make and RVIZ Am now lookinh how to make the robot move on a predefined mapping. So can you sir please guide further. I also read about the isaac SDK and carter robot. So can you have some series on autonmous robot with mapping from point A to B Once again sir you are great and thanks for teaching us. Regards

[@jerrycheng1466]

great video, keep uploading !

[@JetsonHacks]

Thank you, and thanks for watching!

[@adityajindal3813]

Hey Great Video!! I am trying to use mlx90614 sensor with Jetson nano. I can't detect it using sudo i2cdetect -r -y 1. I tried i2c bus0 also. Can u please help

[@JetsonHacks]

You have not given enough information to help. Typically people would supply some type of wiring information, and the breakout board that they are using.

[@incharas2890]

can you share interfacing of ultrasonic sensor to jetson nano?

[@maheshsingh2205]

Thanks for the video, could you please paste the URL of the video on how to read a button input?, Thanks so much

[@robertparenton7470]

What would be neat is a music synthesizer on Jetson Nano.!

[@robertparenton7470]

Thank You for all your videos!

[@bondigor4519]

Can I use BME280 on Jetson nano ?

[@JetsonHacks]

You should be able to.

[@bondigor4519]

@@JetsonHacks Do you know how?

[@JetsonHacks]

@@bondigor4519 You can use Adafruits CircuitPython tutorial and code.

[@bondigor4519]

@@JetsonHacks I'll try. Thank You!!

[@billfield8300]

Hi Jim. Thanks for the great videos. You (or anyone) wouldn't happen to know how much power I can draw off the USB ports would you?

[@JetsonHacks]

I do not know, it's worth checking on the official NVIDIA Jetson Nano forum. A USB 3.0 port allows for a draw of 900mA. I don't know how they power the USB ports whether it's 4x900mA or 900mA total draw. Since the dev board can only have 5A max power, it seems unlikely that the USB ports can draw 3.6A by themselves. But I'm not absolutely certain. Thanks for watching!

[@billfield8300]

@@JetsonHacks Yeah, I checked the nvidia web-page and manual but didn't find anything. I'll check the forum. Thanks.

[@ombheda2124]

what would happen if the bjt was not in the picture ?? the led wouldn't turn on???

[@JetsonHacks]

Depends on what LED you are using. This one faintly lights up. Thanks for watching!

[@ombheda2124]

Thank you for clearing out and making it so easy to understand for beginners 👍🏼👍🏼

[@JetsonHacks]

@@ombheda2124 You are welcome, and thanks for watching!

[@bayyasag9829]

Hello. I want to build a fpv system with nano. i will use image processing with nano. and i want to tansmit it. How can i do that?

[@JetsonHacks]

There are a lot of questions there. Please ask them on the official NVIDIA Jetson Nano forum where a large group of developers can help answer them. Thanks for watching!

[@reynardting9648]

Can we run buzzer using gpio pin and ig yes how? Thanks

[@JetsonHacks]

I don't know what you mean by buzzer.

[@reynardting9648]

@@JetsonHacks means instead of using the gpio to light up the led we use the gpio to ring the buzzer. Because i tried it but the buzzer wong buzz

[@JetsonHacks]

@UCoFFspeF0i0tyeJ28Z3-k8Q I don't know what "the buzzer" means.

[@reynardting9648]

@@JetsonHacks A buzzer or beeper is an audio signalling device, which may be mechanical, electromechanical, or piezoelectric. Typical uses of buzzers and beepers include alarm devices, timers,

[@reynardting9648]

As i wanted to make the buzzer ring when a signal from the gpio pin is given

[@5doublebass]

Trying this on an Orin Nano i get a 'no such file or directory' error when trying to add pin 79 to the list

[@JetsonHacks]

The video is about a Jetson Nano, not Orin Nano. The pin numbers are different.

[@kvnptl4400]

When will you post next video? It's been a long time... Waiting for your video :)

[@pauladdai4392]

Please any C++ library?

[@JetsonHacks]

Please ask your question on the official NVIDIA Jetson forums, where a large group of developers and NVIDIA engineers share their experience.

[@sdr3059]

How to run the python script file automatically in startup

[@JetsonHacks]

This is a general purpose question, best asked on the NVIDia Jetson Nano Developers forum. Thanks for watching!