The Raspberry Pi is a low-cost computer that is popular for its ability to be used for general purpose computing tasks, such as exploring the Internet of Things and controlling electronic components for physical computing (IoT). The Raspberry Pi also has a set of general purpose input/output (GPIO) pins that allow you to explore the Linux operating system. The most popular and well-known open source operating system is Linux. As an operating system, Linux receives requests from other applications and transmits them to the hardware. ..
Steps to Receive Weather Satellites on Raspberry Pi or Linux
Prepare the Raspberry Pi
Step 2: Once the Raspberry Pi is up and running, you need to install some software. There are many tutorials on how to do this, but the most important thing is to make sure you have the latest version of Raspbian installed. You can check this by typing “sudo apt-get update” and “sudo apt-get upgrade”. Step 3: Once you have Raspbian installed, you need to set up a user account and password. This will allow you to access the Raspberry Pi remotely. To do this, type “sudo adduser yourusername” and “sudo passwd yourusername”. Step 4: Next, we need to install some software that will help us control the Raspberry Pi remotely. We can do this by typing “sudo apt-get install raspi-config”. This will open a window that will allow us to configure various settings on the Raspberry Pi. ..
Step 2: Copy the Raspbian image to your micro SD card. To copy the Raspbian image to your micro SD card, follow these steps:
- Connect your Raspberry Pi to the network and SSH (secure Shell) enabled.
- Copy the Raspbian image to your micro SD card.
- Mount the micro SD card on your Raspberry Pi and insert it into your computer.
- Change directories to where you copied the Raspbian image to (for example, /mnt/sdcard):
- Type sudo mkdir /mnt/sdcard
- Type sudo mount -t ext4 /mnt/sdcard:/mnt
To enable SSH on the Raspberry Pi, open the Preferences menu and select the SSH tab. Underneath Enable SSH, you will need to set a password for the pi user. You can also configure the Raspberry Pi to boot from the CLI by checking the Boot from CLI box. ..
sudo apt-get update sudo apt-get upgrade sudo raspi-config The Raspberry Pi should now be up to date and ready to use. ..
Install the necessary software
Step 2: Next, we need to find the RTL dongle’s driver. We can find this information on the RTL website or by searching for it on Google. Once we have the driver, we can install it on our computer. Step 3: Finally, we need to set up our TV. This can be done by following these steps:
- First, make sure that your TV is connected to the network and your computer. This can be done by plugging in your TV and computer together and checking to see if there is a network connection available. If there is, you’re ready to go!
- Next, make sure that your TV has an HDMI port. This port will allow you to connect your TV to your computer so that you can watch television shows and movies. You’ll also need an HDMI cable in order to do this!
To use the RTL-SDR dongle with the latest version of rtl-sdr, you will need to install the software. ..
We need to make sure that the Raspberry Pi doesn’t load any SDR core modules that will interfere with the rtl-sdr software.
This file is used to control the behavior of the RTL card.
If you do not put this line in your /etc/modprobe.d/ module,
the RTL card will not be enabled and you will not be able to use any RTL-based applications.
To properly process the audio coming in over the Internet, we will need the Sox Audio Tool Kit. ..
cd ~git clone rtl-sdr/mkdir build cd build cmake ../ -DINSTALL_UDEV_RULES=ONmakesudo make installsudo ldconfigcd ~sudo cp ./rtl-sdr/rtl-sdr.rules /etc/udev/rules.d/sudo reboot
We need a way to track the satellites as they pass over our planet. To do this, we need the em scheduler.
Predict will tell us when the satellites will pass overhead.
wxtoimg -o image.png -i input.wav
testing things
sudo apt-get update sudo apt-get install usb-storage Step 2: Connect your USB dongle to your computer and run the following command: usb storage create
If you are having trouble with your RTL Dongle, please resolve any errors first. If you still cannot get the TV to work, it may be because of some issues with your RTL Dongle.
To determine the position of your ground station, run the forecast once. You’ll need your latitude and longitude to get this. By entering your address into Google Maps, right-clicking the pointer and choosing “What’s Here”, you can get your latitude and longitude. One thing to keep in mind is that Google shows good statistics for east and north. If you don’t make the necessary adjustments, your predictions will not be accurate.
G: predictions.graphics This will run the predictions.graphics program and return a list of results.
Step 5: Accept the terms and conditions of the website.
To build an overlay map, wxtoimg needs to know where your base station is. To achieve this, create a file called /.wxtoimgrc in your home directory. In this file, North is positive, as it is in the forecast, but East is positive instead of North, as predicted. Make sure you change your values accordingly.
[global] language=en_US [user] username=root language=en_US;username=root
the scripts
It’s time to really make your Raspberry Pi get some weather maps now that you have a working RTL dongle installed on it. Make sure your antenna is correctly positioned and connected. Mine is mounted in my attic and works reasonably well from there. It would be even better if you could ride it out. Raise it as high as you can. To automate things, we’ll need to write some scripts. This is where your Linux experience will come in handy.
- Documents
- Pictures
- Music
- Videos
- Projects Step 2: next, we need to create some folders within our document and picture directories:
- School Work
- Personal Work
- Projects for School
- Projects for Personal Use Step 3: now that we have our directories set up, it’s time to add some files! We’ll start with the Documents directory:
- Add a new file called “homework” to the Documents directory and save it to your computer. This file will contain all of your school work assignments. 2) Add a new file called “project1” to the Documents directory and save it to your computer. This file will contain your first project for school. 3) Add a new file called “project2” to the Documents directory and save it to your computer. This file will contain your second project for school ..
The first script, ‘schedule_all.sh’, will be called every night at midnight and will download the satellite pass information from celestrak and create a TLE file for intended use. It then removes all AT jobs from the system so that no pass is scheduled twice. The second script, ‘schedule_satellite.sh’, will be called for each satellite we are interested in and will create a TLE file for that specific satellite.
The script is repeated on each pass of the given satellite for the current day. If the maximum elevation is 20 degrees or more, it calculates the duration of the pass and schedules the recording and processing of the pass. If the maximum elevation is less than 20 degrees, the pass will be ignored as it will generally not produce a decent image. ..
When the time comes for a passing pass to be recorded and processed, at the kick-off the final road map ‘receive_and_process_satellite.sh’ is called. This script uses rtl_fm to receive the audio from the satellite pass and sends that audio to sox for processing. Sox saves the audio to a file. Once the pass is complete, wxmap is called to generate an overlay map for the image. Finally, wxtoimg is called to generate the real image and place the overlay map on it.
- cd ~/Desktop
- sudo chmod +x scripts.sh
- sudo ./scripts.sh To make the scripts executable, first change to the directory where they are stored on your computer and then use the “chmod” command to make them executable. Then run the “./scripts.sh” command to execute them. ..
script_run_at_midnight
CronFile="/usr/local/bin/php" Step 8: Now open a new terminal window and type the following command to start the cron job: php -f /usr/local/bin/php CronJob
start_time=00:01
check things out
#satpass Step 2: To see the latest satellite passes that are scheduled to be processed, run the following command: #satpass -u
~/weather/temp.csv ~/weather/wind.csv ~/weather/pressure.csv The first two files will have the same data, while the pressure file will be different every time. The third file is the output of your pass, which will have the temperature, wind speed, and pressure values.
Final Words
If you’re looking for a way to get weather satellites onto your Raspberry Pi or Linux computer, the Foundation has got you covered. The breadth and depth of assistance offered to Raspberry Pi users is among the most incredible. features. The Foundation’s website has discussion forums, projects, blogs, how-to articles, instructional videos, and troubleshooting manuals. It provides the information in an understandable style, making it a great resource for parents, instructors, and self-motivated students. The service to educators is broad and goes beyond the site’s tools. The Foundation has ensured that educators have the necessary resources to guide students through the interesting exploration of computer technology. ..
