Over the last year or two there has been a flood of custom silicon intended to speed up machine learning on the edge. However, with everyone moving towards the edge it is perhaps unsurprising to see them introduce something a bit more affordable. The Jetson Nano Developer Kit arrives in yet another unassuming box.
Inside the box is the carrier board itself with the Jetson Nano module and a heatsink already fitted. Also in the box is a small leaflet pointing you at the getting instructions and letting you know the which ports should be used to power board and for the monitorkeyboardand mouse.
That feels way safer than a paper stand? The Jetson Nano module itself, just visible underneath the heatsink, is neat and reasonably sized.
Jetson Nano B01 – Dual Raspberry Pi Cameras
However the, hopefully rather oversized, heatsink that is mounted on top of the module is large and ungainly. Although not included in the retail box, an optional fan came with my pre-release hardware when NVIDIA shipped it to me for review. Not reassuring. I very rarely use a board in anything but headless mode these days. Considering how hard it is to find a reliable 2. Especially since actually providing 3.
Fortunately the board has a barrel jack as well, you can switch between micro USB and the barrel jack using a jumper. Go ahead and insert the micro SD card into the adaptor, and then the card and the adaptor into your Macbook. Then open up a Terminal window and type df -hand check the device name for your SD Card. Then from there we can go ahead and uzip the image, and write the image to our SD card. Plug the board into your monitorkeyboardand mousethen go ahead slot the micro SD Card into the slot on the underside of the Jetson Nano module.
You should look between the module and the carrier board for the slot. Finally go ahead and connect it to your power supply and power on the board. The list of unsupported adaptors includes the really common RTbased dongles along the official Raspberry Pi Wi-Fi adaptor which has the Broadcom chipset.Jetson Nano - Run On USB Drive
You can usually tell what chipset your dongle is based around by looking at the output of the lsusb command after plugging the adaptor into the board. So in our new terminal window type. You can also check to see that an appropriate kernel module has loaded using the lsmod command. Support for my RT dongle being provided by the RT driver. We can then connect it to your wireless network. You can then find out the wireless address as using the ip command.
Your Jetson Nano is now connected to your wireless network and you should just be able to unplug your Ethernet cable. A problem that appears to be down to an incompatibility with the older Gnome desktop. There are a number of ways you can approach this problem, the easiest route is a mix of command line and graphical fixes.When teams think of vision, they often focus on the methods used to process images from onboard cameras, generally as an afterthought to the rest of the robot design and programming.
However, by paying closer attention to the entire picture, robot performance can be greatly increased. There are two main components to FRC Vision: getting the image from the robot camera to the DriverStation and processing that image to get useful information. There are a number of implementations for both steps. Co-Processors - Some teams elect to add another processor to their robots, used for some combination of image streaming and processing.
The jetson easily handles image compression, streaming, and processing on a single platform, freeing up resources on both the DriverStation and the RoboRIO. Additionally, with the libraries already included in the Jetson Jetpack Ubuntu image, the Jetson accomplishes these tasks without requiring teams to undergo complicated software build processes.
The purpose of this guide is to provide the knowledge and tools teams need in order to make use of this platform. This comes in multiple parts: a step-by-step walkthrough for setting up the Jetson for use in FRC, a set of software examples and templates, and additional information about using Linux and the various other technologies featured in this guide. Now that there is an environment in which to set up the Jetson, we must download and install Jetpack On the Ubuntu VM. From eLinux.
With a great interest in deep learning and AI, we decided to try out the Jetson Nano and learn. We are investigating the device and it's usage.
Work in progress. Please come back regularly, you'll find updates as we try out things. The guide is really good and no more comments are needed here. You can plugin the device now and run the system.
Further, we install some basic utilities. This setup is purely optional, and depends on your preferences. Here is the list so far:. This step is rather optional, but if you want to get some extra space and do not intend to use the Nano as a desktop computer, we suggest some purging.
We make it a custom to install Samba for better sharing on Windows networks. Our guide will give you more insight. Our Python guide gives you some more details, but we wish to install some pre-requisites for Python 3 development, and virtual environments. We recommend to setup virtual environments as well. See our Python page for more details.
Your Jetson Nano already contains Docker. We have covered Docker in our Docker on Raspberry Pi article and have outlined the setup including Jetson Nano details. All you need to do is configuration enable running without sudo and probably update Docker.
Here is how:. The Jetson Nano is picky when it comes to a good Wifi connection. You can also get away with some selected Wifi dongles. Here is an example of a setup with an Edimax Device. We got away also with a Realtek dongle.
Setting up Wifi is done through the desktop connections, as you would on any Ubuntu device. Check the guide above or search for more. There's plenty available. Here is a bunch of commands which might come in useful for checking your Wifi network via the terminal. In principle, the approach is the same. You don't need to read up on the Raspberry Pi articles mentioned above.
To access your Jetson Nano remotely, simply do the following:. Please expect a possible bug. For some, the XRDP will work great, but others will be asked to re-enter the password once you login; if you see Authentication Required to Crealte Managed Color Devicethen read on to fix this bug. This is a rather infamous bug and solutions found around the internet usually spawn other problems. Check it out, or simply follow the solution we have extracted below. You will need superuser access to do so.
Enable / Disable UI in Jetson Nano
If you try to share your desktop from the Jetson Nano, the process fails; running Desktop Sharing fails with an error. This recipe shows you how to fix the issue, and connect remotely via VNCViewer.
Update the Desktop Sharing settings.Looky here:. We previously wrote up how to use the Raspberry Pi Version 2. Note that several other manufacturers now offer compatible cameras, some with interchangeable lenses.
The driver for the imaging element is not included in the base kernel modules. Installation of the camera is the same as on the earlier development kit, and the Raspberry Pi. Installation is simple. On a Camera Connector, lift up the plastic camera cable retainer which holds the ribbon cable in place.
Be gentle, the retainer is fragile. Once loose, insert the camera ribbon cable with the contacts on the cable facing inwards towards the Nano module. Make sure that the ribbon cable seats all the way into the connector. The tape on the connector should face towards the outer edge of the board. Then press down on the plastic tab to capture the ribbon cable, applying even pressure on both sides of the retainer. Some pics natch :. Once you have the cameras installed, you can easily test them.
The examples in the CSI-Camera examples have been extended to support the extra parameter. You can checkout v3. The third demo is more interesting. The example in the CSI-Camera repository is a straightforward implementation from that article. This is one of the earlier examples of mainstream machine learning.
These are written in Python. One of these tools is a very simple minded time profiler which allows you examine the elapsed time for executing a block of code.
This is written as a Python class in the file timecontext. You can play with the samples, like we did in the video. Of course, this is only if another CPU is available. This is all handled transparently by the operating system. Dealing with the camera hardware in a separate thread provides several advantages.
Typically the main thread has a loop usually referred to as the display loop which gathers the frame from the camera, processes the frame, displays the frame in a window, and then yields for a short amount of time to the operating system so that other processes can execute. These processes include things like reading the keyboard, mouse movements, background tasks and so on. By reading the camera in another process, we get the benefit of reading the camera frames in a timely manner, regardless of the main loop speed.
This helps with obvious frame speed mismatches, say when you are using a camera that is providing fps, but the display loop can only show Reading through the code, you will see that the camera read saves the latest frame.Many people would like to set up their Jetson Nano without the need of attaching the Jetson to a monitor and keyboard headless setup. With the advent of JetPack 4. Looky here:. With the release of JetPack 4.
The first time a Jetson Nano boots, a script allows the user to set their username and password, language, time zone, and so on. If the Jetson is attached to a monitor and keyboard, the user inputs the configuration from the Jetson keyboard.
In earlier versions of JetPack, this was the only way to configure the Jetson. Many robotics and IoT applications do not need a desktop environment, and therefore have a different setup requirement from a desktop configuration. After all, why dig up an extra monitor and keyboard just to do a one time configuration for the Jetson? Also, because there is no desktop requirement, there is no need to have the extra support software for that environment on board.
Running a minimal environment helps save space, and can lead to more efficient operation. Note: You will see reference in most of the documentation to a host device and a target device. There is a script subsystem tool that runs on the Jetson the first time it boots, named oem- config The link opens up the complete documentation on the NVIDIA website.
If the Jetson has a display and keyboard, oem-config runs as the familiar GUI application on the Jetson and walks the user through the configuration process. However, if there is no monitor and keyboard on the Jetson headless modeoem-config can configure the system through the default debugging port. Note: Make sure that the cable is data capable.
Some USB cables such as those that come with phones only transmit power. You will need a serial terminal application. You can install screen on Ubuntu:. There are multiple network interfaces on the Jetson Nano, including ones which you may add yourself such as those for wifi access.
However, you will need to have your network connection up and running before oem-config starts setup, i. The Jetson interface is baud, so when using your serial terminal app you typically would enter something like:. You may need to hit the Esc key a couple of times when the serial app starts. Remember that it does take a while for the Jetson to boot, waiting a little while before starting setup is your friend. In that case, you may need to flash the SD card and start again. Most of the questions are simple, the only variation comes when you get to the Network Configuration screen.
It is relatively straightforward. Once the Jetson is configured, it reboots. At this point you can ssh into the Jetson.
There is a small chicken and egg problem. You may not know the IP address of the Jetson. You can use the same USB cable and serial app to log in to the Jetson at this point and look up the address using something like ifconfig. These are all affiliate links. These are all items that I have bought and used myself.
This is a little less nuts and bolts than most of the articles here on JetsonHacks.To remotely access your device from your PC, first you need to get your PC and your device on the same local network. The device will get a new IP address from the DHCP server in your router, and thus your PC should be able to access your device within 30 seconds or so, and the device should have access to both the PC and the internet such as to download extra software.
If you are running Ubuntu on your PC, or if you use another operating system that has NetworkManager, then you can make your PC act as a router with just a few clicks in a graphical user interface. Just connect the Jetson board to the PC with an Ethernet cable patch or crossover -- does not matter with modern Ethernet devices and create an Internet Connection Sharing connection in 6 steps:. Now whenever you plug in the Ethernet cable, both your PC and Jetson will be waiting for a router.
You then need to select the "Jetson" connection so that your PC would act as a router for Jetson. Now you can log in as described in Accessing the device from your PC section.
If you can't plug your device into your router, then it becomes more complicated because you will need to setup a small LAN network between your PC and your device. This page describes how you can perform that.
To do this, plug a single Ethernet crossover cable from your PC to your device's Ethernet port. So you need to either set them both to use static IP addresses on the same subnet, or run a DHCP server on your PC to give a dynamic IP address to your device without necessarily modifying the device in any way. If you are using NetworkManager that is enabled by default in many graphical desktop environments like GNOME, KDE or Unityyou probably need to turn it off for now so it doesn't interfere with your local network server:.
Since dnsmasq is also a DNS server, you can access the device using its hostname "tegra-ubuntu" instead of the IP address " If this doesn't work, perhaps it has been renamed to something like "tegra-ubuntu.
You can see the name using "sudo arp". Add a line such as " If you haven't changed from the default password, it would be "ubuntu". Note: You might need to change "wlan0" your network device that has internet and "eth0" you local network device that has the Jetson board for your computer setup.
Now you can run it, passing first the name of your internet adapter eg: wlan0 and your local network adapter eg: eth0 :. If you are using a graphical desktop environment and thus you killed NetworkManager earlier, now you should re-start NetworkManager to give you back your regular internet:.
If your device can't access internet but your desktop can then run the internet sharing command again:. If your desktop can't access internet then remember to re-enable your desktop's GUI network manager:.This means that we will make best efforts to keep it working, but it is still somewhat experimental. Download the Jetson Nano disk image to a PC and unzip it.
These instructions are based on the jetson-nano-sd-r An updated set of instructions is being prepared. Connect the Nano to your home network and then connect the power and turn it on. I used the username "nano" and the password "jetson". These are weak and obvious and should only be used on private networks, but make scripting easy.
Note that the process may seem to freeze on "waiting for unattended-upgr to exit" for around 30 minutes, this is expected, the system is automatically updating software in the background. Right-click on the desktop and open a terminal window.
Run the following commands. You will need to enter the password occasionally. This is probably the most difficult part of the software installation. These are at the end of the very long web page. Dave also set the unit to factory defaults, but did not change any other settings. The PuTTy settings to carry out the factory reset per Yodeck. Then the IP address webpage of the device will look like the top right image.
Note that you cannot view the stream using VLC on the Jetson Nano - for some reason it does not work. Note that if you are using Portsdown control, you can skip this step. The PiCam will not work without a USB microphone dongle connected to the Jetson board - without this it never transmits a picture.
Version of the Portsdown Software currently only available as a Development Release introduces experimental control of a Jetson Nano set up as above from the Portsdown touchscreen.
To set this up, load the development release, and then go to Menu 3, Jetson Config. On the Jetson Configuration Menu, you need to set up:. If you have used the setup instructions above, you should only need to change the Jetson IP Address. Note that only one of the C or Pi Cam should be connected at any time. Connecting both at once disables both.
When you shut down your Portsdown using the touchscreen ShutDown button, it will send a ShutDown signal to the Jetson as well, allowing a graceful shutdown of the Jetson without the use of a screen and keyboard. However, please see the warning about GPIO behaviour below. If you have trouble controlling the Nano from the Portsdown, try a manual ssh session from the Pi to the Jetson.
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