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ops_manual [2024/11/25 13:39] – adminops_manual [2024/11/25 13:57] (current) – admin
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       a. Open the GRIB plugin window, and click on the File button to browse and load your GRIB file.       a. Open the GRIB plugin window, and click on the File button to browse and load your GRIB file.
  
-Step 1: Download GRIB Files from NOAA NOMADS+**Step 1: Download GRIB Files from NOAA NOMADS**
  
 1. Visit the NOAA NOMADS Website: 1. Visit the NOAA NOMADS Website:
 a. Go to the NOAA NOMADS Data Server. a. Go to the NOAA NOMADS Data Server.
 +
 2. Select the Desired Dataset: 2. Select the Desired Dataset:
 a. Under the "Select a Data Set" section, choose a dataset that includes the information you want (e.g., GFS, HRRR, NAM). a. Under the "Select a Data Set" section, choose a dataset that includes the information you want (e.g., GFS, HRRR, NAM).
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 a. Click the "Download" button to save the GRIB file to your computer. It will typically have a .grb or .grb2 file extension. a. Click the "Download" button to save the GRIB file to your computer. It will typically have a .grb or .grb2 file extension.
  
-Step 2: Open the GRIB File in OpenCPN +**Step 2: Open the GRIB File in OpenCPN 
 +**
 1. Launch OpenCPN: 1. Launch OpenCPN:
 a. Open the OpenCPN application on your system. a. Open the OpenCPN application on your system.
 +
 2. Enable the GRIB Plugin: 2. Enable the GRIB Plugin:
 a. Go to Options (the wrench icon) > Plugins and ensure the GRIB plugin is enabled. If not, activate it. a. Go to Options (the wrench icon) > Plugins and ensure the GRIB plugin is enabled. If not, activate it.
 +
 3. Open the GRIB File: 3. Open the GRIB File:
 a. You can either: a. You can either:
 i. Drag and Drop: Drag the downloaded GRIB file from your file explorer directly into the OpenCPN window. i. Drag and Drop: Drag the downloaded GRIB file from your file explorer directly into the OpenCPN window.
 ii. Load via the GRIB Plugin: ii. Load via the GRIB Plugin:
 +
 1. Click on the Weather (cloud icon) toolbar button. 1. Click on the Weather (cloud icon) toolbar button.
 +
 2. Click File in the GRIB display window and navigate to the downloaded GRIB file. 2. Click File in the GRIB display window and navigate to the downloaded GRIB file.
 +
 3. Select the file and click Open. 3. Select the file and click Open.
 +
 4. Display Weather Data: 4. Display Weather Data:
 a. The GRIB file data will now overlay on your OpenCPN chart. You can adjust the time slider to view different forecast periods and toggle between various weather parameters (e.g., wind speed, pressure). a. The GRIB file data will now overlay on your OpenCPN chart. You can adjust the time slider to view different forecast periods and toggle between various weather parameters (e.g., wind speed, pressure).
  
-Step 3: Adjust GRIB Display Settings (Optional) +**Step 3: Adjust GRIB Display Settings (Optional) 
 +**
 1. Customize the Display: 1. Customize the Display:
 a. Click on the Weather button again to access the GRIB plugin settings. a. Click on the Weather button again to access the GRIB plugin settings.
Line 272: Line 279:
 Tips for Efficient Use Tips for Efficient Use
  
-Automate GRIB Downloads:+**Automate GRIB Downloads:**
 Consider using a dedicated GRIB download tool like XyGrib or the built-in OpenCPN GRIB plugin to automate and simplify the download process. Consider using a dedicated GRIB download tool like XyGrib or the built-in OpenCPN GRIB plugin to automate and simplify the download process.
 Check for File Compatibility: Check for File Compatibility:
Line 286: Line 293:
 a. Use for: Wind speed and direction, air temperature, and relative humidity at the height relevant to sailing. a. Use for: Wind speed and direction, air temperature, and relative humidity at the height relevant to sailing.
 b. Reason: The 10-meter level is the standard for measuring surface winds and is most applicable to sailing conditions. b. Reason: The 10-meter level is the standard for measuring surface winds and is most applicable to sailing conditions.
 +
 2. Mean Sea Level Pressure (MSLP) 2. Mean Sea Level Pressure (MSLP)
 a. Use for: Analyzing high and low-pressure systems, weather fronts, and forecasting storm development. a. Use for: Analyzing high and low-pressure systems, weather fronts, and forecasting storm development.
 b. Reason: Helps determine general weather patterns and is crucial for predicting weather changes and navigational planning. b. Reason: Helps determine general weather patterns and is crucial for predicting weather changes and navigational planning.
 +
 3. 850 hPa Level (~1,500 meters above sea level) 3. 850 hPa Level (~1,500 meters above sea level)
 a. Use for: Wind and temperature at a low atmospheric level that is less influenced by the surface but still relevant to sailing. a. Use for: Wind and temperature at a low atmospheric level that is less influenced by the surface but still relevant to sailing.
 b. Reason: Useful for identifying low-level jet streams, wind shear, and general weather trends that influence surface conditions. b. Reason: Useful for identifying low-level jet streams, wind shear, and general weather trends that influence surface conditions.
 +
 4. 500 hPa Level (~5,500 meters above sea level) 4. 500 hPa Level (~5,500 meters above sea level)
 a. Use for: Broad-scale weather patterns and upper-air features such as troughs, ridges, and the jet stream. a. Use for: Broad-scale weather patterns and upper-air features such as troughs, ridges, and the jet stream.
 b. Reason: Provides insights into mid-tropospheric dynamics that affect the development and movement of weather systems. b. Reason: Provides insights into mid-tropospheric dynamics that affect the development and movement of weather systems.
-Key Parameters to Select for Sailing Forecasts+ 
 +==== Key Parameters to Select for Sailing Forecasts ==== 
  
 1. Wind Speed and Direction (10m above ground level) 1. Wind Speed and Direction (10m above ground level)
 a. Essential for navigation and sail planning. a. Essential for navigation and sail planning.
 +
 2. Sea Surface Temperature (SST) 2. Sea Surface Temperature (SST)
 a. Influences weather patterns, wind generation, and can indicate the potential for fog formation or the presence of fronts. a. Influences weather patterns, wind generation, and can indicate the potential for fog formation or the presence of fronts.
 +
 3. Significant Wave Height 3. Significant Wave Height
 a. Helps in understanding sea conditions and potential roughness. a. Helps in understanding sea conditions and potential roughness.
 +
 4. Ocean Currents 4. Ocean Currents
 a. Affects navigation, speed, and course planning. a. Affects navigation, speed, and course planning.
 +
 5. Precipitation Rate 5. Precipitation Rate
 a. Forecasting rainfall intensity and accumulation, crucial for visibility and safety. a. Forecasting rainfall intensity and accumulation, crucial for visibility and safety.
 +
 6. Relative Humidity and Dew Point 6. Relative Humidity and Dew Point
 a. Useful for predicting fog, visibility, and comfort levels. a. Useful for predicting fog, visibility, and comfort levels.
 +
 7. Convective Parameters (e.g., CAPE, CIN) 7. Convective Parameters (e.g., CAPE, CIN)
 a. Indicates potential for thunderstorms, squalls, and severe weather. a. Indicates potential for thunderstorms, squalls, and severe weather.
  
-Recommended Levels for Specific Parameters+**Recommended Levels for Specific Parameters**
  
 Winds: Use 10m and 850 hPa levels to get a clear picture of surface and low-level winds. Winds: Use 10m and 850 hPa levels to get a clear picture of surface and low-level winds.
 +
 Pressure: Use Mean Sea Level Pressure for understanding high and low-pressure systems. Pressure: Use Mean Sea Level Pressure for understanding high and low-pressure systems.
 +
 Waves: Significant wave height and period data at the surface level. Waves: Significant wave height and period data at the surface level.
 +
 Temperature: 2m above ground level for surface temperature and sea surface temperature. Temperature: 2m above ground level for surface temperature and sea surface temperature.
 +
 Cloud Cover: Total cloud cover at the surface or low levels for visibility and sunlight conditions. Cloud Cover: Total cloud cover at the surface or low levels for visibility and sunlight conditions.
  
-Best Practices for Sailors+==== Best Practices for Sailors ====
  
-Use High-Resolution Data: Opt for higher-resolution GRIB files (e.g., 0.25 degrees) for more accurate local forecasting. + 
-Frequent Updates: Weather can change rapidly at sea, so use updated GRIB files as frequently as possible. +  * Use High-Resolution Data: Opt for higher-resolution GRIB files (e.g., 0.25 degrees) for more accurate local forecasting. 
-Combine Multiple Sources: Use a combination of GRIB data for a comprehensive view, including wind, pressure, precipitation, and wave data. +  * Frequent Updates: Weather can change rapidly at sea, so use updated GRIB files as frequently as possible. 
-By focusing on these key levels and parameters, you can create a detailed and actionable sailing weather forecast using GRIB files in OpenCPN. +  * Combine Multiple Sources: Use a combination of GRIB data for a comprehensive view, including wind, pressure, precipitation, and wave data. 
-Mapping Weather +  * By focusing on these key levels and parameters, you can create a detailed and actionable sailing weather forecast using GRIB files in OpenCPN. 
-1. GFS (Global Forecast System)+  * Mapping Weather 
 + 
 +**1. GFS (Global Forecast System)**
  
 Description: Provides global weather data with various parameters at multiple atmospheric levels. Description: Provides global weather data with various parameters at multiple atmospheric levels.
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 Common Acronyms in GFS: Common Acronyms in GFS:
  
-UGRD (U-component of Wind): Zonal (east-west) component of wind. +  * UGRD (U-component of Wind): Zonal (east-west) component of wind. 
-VGRD (V-component of Wind): Meridional (north-south) component of wind. +  * VGRD (V-component of Wind): Meridional (north-south) component of wind. 
-PRMSL (Pressure Reduced to Mean Sea Level): Mean sea-level pressure. +  * PRMSL (Pressure Reduced to Mean Sea Level): Mean sea-level pressure. 
-TMP (Temperature): Surface or atmospheric level temperature. +  * TMP (Temperature): Surface or atmospheric level temperature. 
-RH (Relative Humidity): Percentage of humidity at various levels. +  * RH (Relative Humidity): Percentage of humidity at various levels. 
-APCP (Total Precipitation): Accumulated precipitation over a period. +  * APCP (Total Precipitation): Accumulated precipitation over a period. 
-HTSGW (Significant Height of Combined Wind Waves and Swell): Wave height information.+  * HTSGW (Significant Height of Combined Wind Waves and Swell): Wave height information.
  
-2. HRRR (High-Resolution Rapid Refresh)+**2. HRRR (High-Resolution Rapid Refresh)**
  
 Description: Offers high-resolution forecasts for the United States. Description: Offers high-resolution forecasts for the United States.
 Best for: Short-term and high-resolution forecasts, severe weather prediction. Best for: Short-term and high-resolution forecasts, severe weather prediction.
  
-Common Acronyms in HRRR:+**Common Acronyms in HRRR:**
  
-REFC (Composite Reflectivity): Radar reflectivity for precipitation. +  * REFC (Composite Reflectivity): Radar reflectivity for precipitation. 
-TCDC (Total Cloud Cover): Percentage of cloud cover at various levels. +  * TCDC (Total Cloud Cover): Percentage of cloud cover at various levels. 
-CAPE (Convective Available Potential Energy): Measure of atmospheric instability. +  * CAPE (Convective Available Potential Energy): Measure of atmospheric instability.
- +
-3. NAM (North American Mesoscale Model)+
  
 +**3. NAM (North American Mesoscale Model)
 +**
 Description: Provides weather data focused on North America. Description: Provides weather data focused on North America.
 Best for: Regional weather forecasting, especially in North America. Best for: Regional weather forecasting, especially in North America.
- +** 
-Common Acronyms in NAM:+Common Acronyms in NAM:**
  
 GUST (Wind Gust): Maximum wind gusts expected. GUST (Wind Gust): Maximum wind gusts expected.
 MSLET (Mean Sea Level Pressure): Surface pressure data. MSLET (Mean Sea Level Pressure): Surface pressure data.
 SNOD (Snow Depth): Snow coverage, less relevant for sailing but useful in some contexts. SNOD (Snow Depth): Snow coverage, less relevant for sailing but useful in some contexts.
-4. NDFD (National Digital Forecast Database)+ 
 +**4. NDFD (National Digital Forecast Database)**
  
 Description: Provides detailed forecast data for the United States. Description: Provides detailed forecast data for the United States.
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 Common Acronyms in NDFD: Common Acronyms in NDFD:
 +  * WX (Weather): General weather conditions (e.g., clear, cloudy).
 +  * WSPD (Wind Speed): Wind speed at various levels.
 +  * WIND (Wind Direction and Speed): Combined wind vector information.
  
-WX (Weather): General weather conditions (e.g., clear, cloudy). +**5. RTOFS (Real-Time Ocean Forecast System)**
-WSPD (Wind Speed): Wind speed at various levels. +
-WIND (Wind Direction and Speed): Combined wind vector information. +
- +
-5. RTOFS (Real-Time Ocean Forecast System)+
  
 Description: Provides oceanographic data such as currents, sea surface temperature, and salinity. Description: Provides oceanographic data such as currents, sea surface temperature, and salinity.
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 Common Acronyms in RTOFS: Common Acronyms in RTOFS:
 +  * UVEL (U-Component of Ocean Current): East-west component of ocean currents.
 +  * VVEL (V-Component of Ocean Current): North-south component of ocean currents.
 +  * SSH (Sea Surface Height): Deviation of sea surface height from mean.
 +  * TEMP (Sea Temperature): Sea surface or subsurface temperature.
 +  * SALT (Salinity): Salinity at different depths.
  
-UVEL (U-Component of Ocean Current): East-west component of ocean currents. +**How to Select Parameters for Sailing**
-VVEL (V-Component of Ocean Current): North-south component of ocean currents. +
-SSH (Sea Surface Height): Deviation of sea surface height from mean. +
-TEMP (Sea Temperature): Sea surface or subsurface temperature. +
-SALT (Salinity): Salinity at different depths.+
  
-How to Select Parameters for Sailing+  * 1. Winds: Use UGRD and VGRD for wind speed and direction at 10m and 850 hPa levels. 
 +  * 2. Pressure: Use PRMSL to track high and low-pressure systems. 
 +  * 3. Waves: Use HTSGW for significant wave height. 
 +  * 4. Temperature: Use TMP at 2m for air temperature and TEMP for sea temperature. 
 +  * 5. Precipitation: Use APCP for accumulated precipitation forecasts. 
 +  * 6. Currents: Use UVEL and VVEL from RTOFS for ocean current predictions.
  
-1. Winds: Use UGRD and VGRD for wind speed and direction at 10m and 850 hPa levels. +**Example of a GRIB Request String for Saildocs**
-2. Pressure: Use PRMSL to track high and low-pressure systems. +
-3. Waves: Use HTSGW for significant wave height. +
-4. Temperature: Use TMP at 2m for air temperature and TEMP for sea temperature. +
-5. Precipitation: Use APCP for accumulated precipitation forecasts. +
-6. Currents: Use UVEL and VVEL from RTOFS for ocean current predictions. +
-Example of a GRIB Request String for Saildocs+
  
 For example, if you want wind and pressure data for a specific area using the GFS model, you would send an email to Saildocs like this: For example, if you want wind and pressure data for a specific area using the GFS model, you would send an email to Saildocs like this:
-mathematica +mathematical 
-≥ send GFS:40N,10N,30W,0W|0.25,0.25|0,6..72|UGRD:10 m above +    ≥ send GFS:40N,10N,30W,0W|0.25,0.25|0,6..72|UGRD:10 m above 
-ground,VGRD:10 m above ground,PRMSL+    ground,VGRD:10 m above ground,PRMSL
  
  
-This request specifies:+**This request specifies:**
  
-Area: from 40°N to 10°N latitude, 30°W to 0°W longitude. +  * Area: from 40°N to 10°N latitude, 30°W to 0°W longitude. 
-Resolution: 0.25 degrees. +  * Resolution: 0.25 degrees. 
-Forecast steps: From 0 hours to 72 hours, every 6 hours. +  * Forecast steps: From 0 hours to 72 hours, every 6 hours. 
-Parameters: U and V components of wind at 10 meters above ground and sea-level pressure. +  * Parameters: U and V components of wind at 10 meters above ground and sea-level pressure. 
-Understanding these acronyms and selecting the appropriate ones based on your needs will provide a more accurate and relevant forecast for your sailing activities.+  * Understanding these acronyms and selecting the appropriate ones based on your needs will provide a more accurate and relevant forecast for your sailing activities. 
 +  * 
  
-Acronym +=== Geographic Boundaries Georgetown to Charleston for GRIB File ===
-Description +
-UGRD +
-U-component of wind (east-west direction) +
-VGRD +
-V-component of wind (north-south direction) +
-GUST +
-Wind gust speed +
-TMP +
-Temperature +
-RH +
-Relative humidity +
-PRMSL +
-Pressure reduced to mean sea level +
-PRES +
-Surface pressure +
-HGT +
-Geopotential height +
-TCDC +
-Total cloud cover +
-APCP +
-Total precipitation +
-SNOD +
-Snow depth +
-CAPE +
-Convective available potential energy +
-CIN +
-Convective inhibition +
-PWAT +
-Precipitable water +
-ICEC +
-Sea ice concentration +
-LFTX +
-Surface lifted index (stability) +
-SHTFL +
-Sensible heat net flux +
-LHTFL +
-Latent heat net flux +
-VVEL +
-Vertical velocity +
-HPBL +
-Planetary boundary layer height +
-SNOWC +
-Categorical snow +
-WIND +
-Wind speed and direction +
-FRICV +
-Friction velocity +
-RADS +
-Net shortwave radiation flux +
-LWRAD +
-Net longwave radiation flux +
-SPFH +
-Specific humidity +
-UGRD_10m +
-U-component of wind at 10 meters +
-VGRD_10m +
-V-component of wind at 10 meters +
-TMP_2m +
-Temperature at 2 meters +
-DEPR +
-Dew point depression +
-WTMP +
-Sea surface temperature +
-HGT_500hPa +
-Geopotential height at 500 hPa +
-RH_700hPa +
-Relative humidity at 700 hPa +
-WAV +
-Wave height +
-Parameters for GFS Models +
-This table covers the primary parameters used in the GFS model, which are relevant for various applications including weather forecasting and marine navigation. +
-Here's a table listing the most important GFS parameters along with their recommended levels for sailing and weather forecasting:+
  
-Acronym 
-Description 
-Recommended Levels 
-UGRD 
-U-component of wind (east-west 
-direction) 
-Surface (10m), 850 hPa, 
-500 hPa 
-VGRD 
-V-component of wind (north-south direction) 
-Surface (10m), 850 hPa, 500 hPa 
-GUST 
-Wind gust speed 
-Surface (10m) 
-TMP 
-Temperature 
-Surface (2m), 850 hPa, 500 hPa 
-PRMSL 
-Pressure reduced to mean sea level 
-Surface (MSL) 
-PRES 
-Surface pressure 
-Surface 
-APCP 
-Total precipitation 
-Surface 
-RH 
-Relative humidity 
-Surface, 850 hPa, 700 hPa 
-PWAT 
-Precipitable water 
-Surface 
-CAPE 
-Convective available potential energy 
-Surface 
-CIN 
-Convective inhibition 
-Surface 
-HGT 
-Geopotential height 
-850 hPa, 500 hPa 
-LFTX 
-Surface lifted index (stability) 
-Surface 
-SNOD 
-Snow depth 
-Surface 
-TCDC 
-Total cloud cover 
-Surface 
-WTMP 
-Sea surface temperature 
-Surface 
-HTSGW 
-Significant wave height 
-Surface 
-ICEC 
-Sea ice concentration 
-Surface 
-VVEL 
-Vertical velocity 
-850 hPa, 500 hPa 
-SPFH 
-Specific humidity 
-Surface, 850 hPa 
-Key Level Descriptions: 
  
-Surface (10m): Represents conditions experienced at sea level, particularly relevant for wind, pressure, and temperature directly affecting sailing. +  * Top Latitude: 33.35° N (approximately the northern limit near Georgetown) 
-850 hPa (~1,500 meters): Used to understand low-level jet streams, wind shear, and general atmospheric stability. +  * Bottom Latitude: 32.80° N (approximately the southern limit near Charleston) 
-500 hPa (~5,500 meters): Crucial for analyzing the middle atmosphere, identifying troughs, ridges, and the jet stream which influence large-scale weather patterns. +  * Left Longitude: 79.50° W (approximately the western limit) 
-Surface (2m): Provides near-ground temperature and humidity data, important for fog and comfort. +  * Right Longitude: 78.90° W (approximately the eastern limit)
-Mean Sea Level (MSL): Shows pressure patterns crucial for identifying high and low- pressure systems, fronts, and storm development. +
-Using these parameters and levels will give you a comprehensive view of the atmospheric and oceanic conditions relevant to sailing and weather forecasting. +
-4o +
- +
-Geographic Boundaries Georgetown to Charleston for GRIB File +
- +
-Top Latitude: 33.35° N (approximately the northern limit near Georgetown) +
-Bottom Latitude: 32.80° N (approximately the southern limit near Charleston) +
-Left Longitude: 79.50° W (approximately the western limit) +
-Right Longitude: 78.90° W (approximately the eastern limit)+
  
 Summary of Coordinates Summary of Coordinates
 +  * Top Latitude: 33.35° N
 +  * Bottom Latitude: 32.80° N
 +  * Left Longitude: 79.50° W
 +  * Right Longitude: 78.90° W
 +  * SSH, X-Term & SFTP
  
-Top Latitude: 33.35° N +==== To access your OpenOS Chartplotter (RP4) from a Windows machine, you can use several methods depending on what kind of access you want (e.g., file transfer, remote desktop, or SSH). Here are the most common options: 
-Bottom Latitude: 32.80° N + ====
-Left Longitude: 79.50° W +
-Right Longitude: 78.90° W +
-SSH, X-Term & SFTP +
- +
-To access your OpenOS Chartplotter (RP4) from a Windows machine, you can use several methods depending on what kind of access you want (e.g., file transfer, remote desktop, or SSH). Here are the most common options: +
 1. Access via SSH (Command Line Access) 1. Access via SSH (Command Line Access)
- +    SSH (Secure Shell) allows you to remotely control your Raspberry Pi's command line from your Windows machine.
-SSH (Secure Shell) allows you to remotely control your Raspberry Pi's command line from your Windows machine. +
 Steps: Steps:
  
 1. Enable SSH on Raspberry Pi: 1. Enable SSH on Raspberry Pi:
 a. If SSH is not already enabled on your Raspberry Pi, you can enable it either through the Raspberry Pi Configuration tool (under the "Interfaces" tab) or by running the following command on the Pi: a. If SSH is not already enabled on your Raspberry Pi, you can enable it either through the Raspberry Pi Configuration tool (under the "Interfaces" tab) or by running the following command on the Pi:
 +  ≥ sudo raspi-config
  
-≥ sudo raspi-config +Then, navigate to  
- +    Interface Options > SSH and enable it.
-Then navigate to Interface Options > SSH and enable it.+
  
 2. Find the Raspberry Pi's IP address: 2. Find the Raspberry Pi's IP address:
 a. On your Raspberry Pi, run this command to get the IP address: a. On your Raspberry Pi, run this command to get the IP address:
 +    ≥ hostname -I
 +b. You will use this IP address to connect from your Windows machine.
  
-≥ hostname -I 
- 
-b. You will use this IP address to connect from your Windows machine. 
 3. Install an SSH client on Windows: 3. Install an SSH client on Windows:
 a. Windows 10 or 11 comes with a built-in SSH client. Open Command Prompt or a. Windows 10 or 11 comes with a built-in SSH client. Open Command Prompt or
 PowerShell and use: PowerShell and use:
- +   ≥ ssh username@ip_address
- +
-≥ ssh username@ip_address+
  
  
Line 608: Line 479:
  
 b. Alternatively, you can use a third-party SSH client like PuTTY: b. Alternatively, you can use a third-party SSH client like PuTTY:
-i. Download and install PuTTY. +  * i. Download and install PuTTY. 
-ii. Open PuTTY, enter the IP address of your Raspberry Pi, and select SSH. +  * ii. Open PuTTY, enter the IP address of your Raspberry Pi, and select SSH. 
-iii. Click Open and enter your username and password when prompted.+  * iii. Click Open and enter your username and password when prompted.
  
 2. Access via Remote Desktop (Graphical Interface) 2. Access via Remote Desktop (Graphical Interface)
  
 If you prefer to access the Raspberry Pi's desktop environment (graphical interface) from your Windows machine, you can use Remote Desktop Protocol (RDP) or VNC. If you prefer to access the Raspberry Pi's desktop environment (graphical interface) from your Windows machine, you can use Remote Desktop Protocol (RDP) or VNC.
- +**Using RDP (Remote Desktop Protocol):**
-Using RDP (Remote Desktop Protocol):+
  
 1. Install xrdp on the Raspberry Pi: Run the following commands on your Raspberry Pi to install the xrdp server: 1. Install xrdp on the Raspberry Pi: Run the following commands on your Raspberry Pi to install the xrdp server:
- +    ≥ sudo apt update 
- +    sudo apt install xrdp
-≥ sudo apt update +
-sudo apt install xrdp+
  
  
 2. Enable the xrdp service: After installing, xrdp should start automatically, but you can ensure it by running: 2. Enable the xrdp service: After installing, xrdp should start automatically, but you can ensure it by running:
 +    ≥ sudo systemctl enable xrdp
 +    sudo systemctl start xrdp
  
  
-≥ sudo systemctl enable xrdp +3. Use Windows Remote Desktop:.     
-sudo systemctl start xrdp +  * Unordered List ItemOpen the Remote Desktop Connection app on your Windows machine (you can search for "Remote Desktop" in the Start Menu). 
- +  * b. Enter the IP address of your Raspberry Pi. 
- +  * c. When prompted, log in using your Raspberry Pi username and password.
-3. Use Windows Remote Desktop: +
-a. Open the Remote Desktop Connection app on your Windows machine (you can search for "Remote Desktop" in the Start Menu). +
-b. Enter the IP address of your Raspberry Pi. +
-c. When prompted, log in using your Raspberry Pi username and password.+
  
 Using VNC (Virtual Network Computing): Using VNC (Virtual Network Computing):
  
 1. Enable VNC on Raspberry Pi: 1. Enable VNC on Raspberry Pi:
-a. Open the Raspberry Pi Configuration tool, go to the Interfaces tab, and enable +a. Open the Raspberry Pi Configuration tool, go to the Interfaces tab, and enable VNC.
-VNC.+
 b. Alternatively, run: b. Alternatively, run:
- +    ≥ sudo raspi-config
-≥ sudo raspi-config+
 Navigate to Interface Options > VNC and enable it. Navigate to Interface Options > VNC and enable it.
  
-2. Install VNC Viewer on Windows:+Item2. Install VNC Viewer on Windows:
 a. Download and install VNC Viewer from here. a. Download and install VNC Viewer from here.
-3. Connect to the Raspberry Pi:+Item3. Connect to the Raspberry Pi:
 a. Open VNC Viewer on your Windows machine. a. Open VNC Viewer on your Windows machine.
 b. Enter the IP address of your Raspberry Pi and click Connect. b. Enter the IP address of your Raspberry Pi and click Connect.
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 1. Install Samba on Raspberry Pi: 1. Install Samba on Raspberry Pi:
- +    ≥ sudo apt update 
-≥ sudo apt update +    sudo apt install samba samba-common-bin
-sudo apt install samba samba-common-bin+
  
  
 2. Configure a shared folder: 2. Configure a shared folder:
 a. Edit the Samba configuration file: a. Edit the Samba configuration file:
- +    ≥ sudo nano /etc/samba/smb.conf 
-≥ sudo nano /etc/samba/smb.conf +    ≥ [SharedFolder] 
- +    path = /home/pi/shared writeable=Yes 
- +    create mask=0777 directory mask=0777 public=no
-≥ [SharedFolder] +
-path = /home/pi/shared writeable=Yes +
-create mask=0777 directory mask=0777 public=no +
  
 3. Restart Samba: 3. Restart Samba:
- +    ≥ sudo systemctl restart smbd
-≥ sudo systemctl restart smbd +
  
 4. Access from Windows: 4. Access from Windows:
 a. Open File Explorer and enter the Raspberry Pi’s IP address in this format: a. Open File Explorer and enter the Raspberry Pi’s IP address in this format:
-\\<Raspberry Pi IP> (e.g., \\192.168.1.100).+    \\<Raspberry Pi IP> (e.g., \\192.168.1.100).
 b. You should see the shared folder and be able to copy files between your Windows machine and the Raspberry Pi. b. You should see the shared folder and be able to copy files between your Windows machine and the Raspberry Pi.
-Conclusion:+ 
 +**Conclusion:**
  
 SSH: For command line access, use SSH (via PuTTY or Windows' built-in SSH client). SSH: For command line access, use SSH (via PuTTY or Windows' built-in SSH client).
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 1. Change the owner of a file: 1. Change the owner of a file:
- +    ≥ sudo chown jellyfin /media/dan/media/movie.mp4
-≥ sudo chown jellyfin /media/dan/media/movie.mp4+
  
 a. This command changes the owner of the file movie.mp4 to jellyfin, but keeps the group unchanged. a. This command changes the owner of the file movie.mp4 to jellyfin, but keeps the group unchanged.
 +
 2. Change both the owner and group of a directory: 2. Change both the owner and group of a directory:
 +    ≥ sudo chown jellyfin:media_group /media/dan/media
  
-≥ sudo chown jellyfin:media_group /media/dan/media+a. This changes both the owner to jellyfin and the group to media_group for the directory /media/dan/media.
  
-a. This changes both the owner to jellyfin and the group to media_group for the directory /media/dan/media. 
 3. Change the ownership recursively (apply to all files and subdirectories): 3. Change the ownership recursively (apply to all files and subdirectories):
- +    ≥ sudo chown -R jellyfin:media_group /media/dan/media
-≥ sudo chown -R jellyfin:media_group /media/dan/media +
 a. This command applies the owner jellyfin and group media_group to the directory and all its contents. a. This command applies the owner jellyfin and group media_group to the directory and all its contents.
 chmod (Change Mode / Permissions) chmod (Change Mode / Permissions)
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 Syntax: Syntax:
  
-≥ chmod [OPTIONS] MODE FILE+   ≥ chmod [OPTIONS] MODE FILE
  
 MODE: This can be specified in numeric or symbolic format (more below). MODE: This can be specified in numeric or symbolic format (more below).
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 1. Give the owner read, write, and execute; group read and execute; others only read: 1. Give the owner read, write, and execute; group read and execute; others only read:
  
-≥ sudo chmod 754 /media/dan/media/movie.mp4+   ≥ sudo chmod 754 /media/dan/media/movie.mp4
  
 a. Owner (7): Read, write, execute. a. Owner (7): Read, write, execute.
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 2. Give everyone full permissions: 2. Give everyone full permissions:
  
-≥ sudo chmod 777 /media/dan/media/movie.mp4+    ≥ sudo chmod 777 /media/dan/media/movie.mp4
  
 a. Owner, group, and others can read, write, and execute the file. a. Owner, group, and others can read, write, and execute the file.
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 a. This gives the owner and group execute permissions. a. This gives the owner and group execute permissions.
 2. Remove write permissions for others: 2. Remove write permissions for others:
- +    ≥ sudo chmod o-w /media/dan/media/movie.mp4
-≥ sudo chmod o-w /media/dan/media/movie.mp4+
  
 a. This removes write permissions for others. a. This removes write permissions for others.
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 Command Command
 Description Description
-sudo chown user file+    sudo chown user file
 Change the owner of a file to user. Change the owner of a file to user.
-sudo chown user:group file+    sudo chown user:group file
 Change both the owner and the group of a file to user and Change both the owner and the group of a file to user and
 group. group.
-sudo chown -R user:group directory+    sudo chown -R user:group directory
 Recursively change the owner and group of a directory and all its contents. Recursively change the owner and group of a directory and all its contents.
-sudo chmod 755 file+    sudo chmod 755 file
 Set read, write, execute for the owner; read, execute for Set read, write, execute for the owner; read, execute for
 group; and read for others. group; and read for others.
-sudo chmod -R 775 directory+    sudo chmod -R 775 directory
 Recursively set read, write, execute for owner and group; read and execute for others on the directory. Recursively set read, write, execute for owner and group; read and execute for others on the directory.
-sudo chmod u+x file+    sudo chmod u+x file
 Add execute permission to the owner of the file. Add execute permission to the owner of the file.
-sudo chmod o-r file+    sudo chmod o-r file
 Remove read permission for others on the file. Remove read permission for others on the file.
-sudo chmod u=rw,g=r,o=r file+    sudo chmod u=rw,g=r,o=r file
 Set read and write permissions for the owner, and read-only for group and others. Set read and write permissions for the owner, and read-only for group and others.
-sudo chown -R user directory+    sudo chown -R user directory
 Change the owner of the directory and all files in it recursively to user. Change the owner of the directory and all files in it recursively to user.
-Key Points:+ 
 +**Key Points:**
  
 chown changes the owner and/or group of a file or directory. chown changes the owner and/or group of a file or directory.
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 This should give you control over file and directory ownership and permissions on your Raspberry Pi This should give you control over file and directory ownership and permissions on your Raspberry Pi
-What size battery pack do I need +What size battery pack do I need?
-To estimate the real capacity of your battery pack, you can calculate the average power consumption and then multiply it by the runtime.+
  
-Step 1: Calculating the average power consumption+===== Battery Calculations =====
  
-We operated our system for 18 hours on a newly installed battery bank, which was rated at 260 Ah. The system draws approximately 6 watts to power WiFi, Bluetooth, RTL-SDR, and GPS components. When the display is active, power consumption increases to 10 watts, all powered through DC. +To estimate the actual capacity of your battery pack, you can calculate the average power consumption and then multiply it by the runtime.
-Given the advertised capacity, we expected the battery to last at least 24 hours under these conditions. However, it fell short of this expectation. Below are our calculations based on the actual performance we observed during the 18-hour run time.+
  
 +**Step 1: Calculating the average power consumption**
  
 +We operated our system for 18 hours on a newly installed battery bank rated at 260 Ah. The system draws approximately 6 watts to power the WiFi, Bluetooth, RTL-SDR, and GPS components. When the display is active, power consumption increases to 10 watts, all powered through DC.
 +Given the advertised capacity, we expected the battery to last at least 24 hours under these conditions. However, it fell short of this expectation. Below are our calculations based on the actual performance we observed during the 18-hour run time.
  
 The actual capacity of the battery pack is approximately 144 Wh. When connected to a 40-watt solar panel, we estimate that this setup would provide continuous power, allowing the system to operate indefinitely, making it suitable for extended voyages. The actual capacity of the battery pack is approximately 144 Wh. When connected to a 40-watt solar panel, we estimate that this setup would provide continuous power, allowing the system to operate indefinitely, making it suitable for extended voyages.
ops_manual.1732567187.txt.gz · Last modified: 2024/11/25 13:39 by admin
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