Final

Author: penderact13

usr/local/bin/iss-tracker.py

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+#!/usr/bin/env python3
+
+import tkinter as tk
+from tkinter import Canvas
+import requests
+from sgp4.api import Satrec, WGS72
+from datetime import datetime, timedelta
+import math
+import cartopy.crs as ccrs
+import matplotlib.pyplot as plt
+from PIL import Image, ImageTk
+import io
+
+
+def generate_map():
+    fig = plt.figure(figsize=(8, 4))
+    ax = fig.add_subplot(1, 1, 1, projection=ccrs.PlateCarree())
+    ax.set_global()
+    ax.stock_img()
+    ax.coastlines()
+    buf = io.BytesIO()
+    plt.savefig(buf, format='png', dpi=100)
+    buf.seek(0)
+    plt.close(fig)
+    return Image.open(buf)
+
+def get_pi_location():
+    try:
+        response = requests.get("http://ip-api.com/json/")
+        data = response.json()
+        return data['lat'], data['lon']
+    except:
+        return 0, 0
+
+def fetch_iss_tle():
+    url = "https://celestrak.org/NORAD/elements/stations.txt"
+    tle_data = requests.get(url).text
+    lines = tle_data.split('\n')
+    for i, line in enumerate(lines):
+        if "ISS (ZARYA)" in line:
+            return lines[i+1], lines[i+2]
+    return None, None
+
+def latlon_to_xy(lat, lon, width, height):
+    x = (lon + 180) * (width / 360)
+    y = (90 - lat) * (height / 180)
+    return x, y
+
+class ISSTrackerApp:
+    def __init__(self, root):
+        self.root = root
+        self.root.title("ISS Tracker")
+        self.canvas = Canvas(root, width=800, height=400)
+        self.canvas.pack()
+
+        self.image = generate_map().resize((800, 400))
+        self.tk_image = ImageTk.PhotoImage(self.image)
+        self.canvas.create_image(0, 0, anchor="nw", image=self.tk_image)
+
+        self.lat, self.lon = get_pi_location()
+        self.load_tle()
+
+        self.time_offset = timedelta(seconds=0)
+
+        self.root.bind("<Left>", self.go_back)
+        self.root.bind("<Right>", self.go_forward)
+        self.root.bind("<space>", self.reset_time)
+
+        self.update_display()
+
+    def load_tle(self):
+        tle1, tle2 = fetch_iss_tle()
+        if tle1 and tle2:
+            self.satellite = Satrec.twoline2rv(tle1, tle2)
+        else:
+            self.satellite = None
+
+    def update_display(self):
+        self.canvas.delete("markers")
+        self.canvas.create_image(0, 0, anchor="nw", image=self.tk_image)
+
+        x, y = latlon_to_xy(self.lat, self.lon, 800, 400)
+        self.canvas.create_oval(x-4, y-4, x+4, y+4, fill="red", tags="markers")
+
+        if self.satellite:
+            now = datetime.utcnow() + self.time_offset
+            jd, fr = self.satellite.jday(now.year, now.month, now.day, now.hour, now.minute, now.second + now.microsecond/1e6)
+            e, pos, vel = self.satellite.sgp4(jd, fr)
+            iss_lat = math.degrees(math.asin(pos[2]/(WGS72.radiuse + pos[0]**2 + pos[1]**2 + pos[2]**2)**0.5))
+            iss_lon = math.degrees(math.atan2(pos[1], pos[0]))
+            if iss_lon > 180:
+                iss_lon -= 360
+
+            iss_x, iss_y = latlon_to_xy(iss_lat, iss_lon, 800, 400)
+            self.canvas.create_oval(iss_x-4, iss_y-4, iss_x+4, iss_y+4, fill="purple", tags="markers")
+
+            for mins in range(5, 90, 5):
+                future_time = now + timedelta(minutes=mins)
+                jd_fut, fr_fut = self.satellite.jday(future_time.year, future_time.month, future_time.day,
+                                                     future_time.hour, future_time.minute,
+                                                     future_time.second + future_time.microsecond / 1e6)
+                e_fut, pos_fut, vel_fut = self.satellite.sgp4(jd_fut, fr_fut)
+                lat_fut = math.degrees(math.asin(pos_fut[2]/(WGS72.radiuse + pos_fut[0]**2 + pos_fut[1]**2 + pos_fut[2]**2)**0.5))
+                lon_fut = math.degrees(math.atan2(pos_fut[1], pos_fut[0]))
+                if lon_fut > 180:
+                    lon_fut -= 360
+                path_x, path_y = latlon_to_xy(lat_fut, lon_fut, 800, 400)
+                self.canvas.create_oval(path_x-1, path_y-1, path_x+1, path_y+1, fill="blue", tags="markers")
+
+        self.root.after(1000, self.update_display)
+
+    def go_forward(self, event):
+        self.time_offset += timedelta(minutes=10)
+
+    def go_back(self, event):
+        self.time_offset -= timedelta(minutes=10)
+
+    def reset_time(self, event):
+        self.time_offset = timedelta(seconds=0)
+
+if __name__ == "__main__":
+    root = tk.Tk()
+    app = ISSTrackerApp(root)
+    root.mainloop()

usr/share/applications/iss-tracker.desktop

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+[Desktop Entry]
+Version=1.0
+Type=Application
+Name=ISS Tracker
+Comment=Track ISS and your Pi location with live world map
+Exec=/usr/local/bin/iss-tracker.py
+Icon=utilities-terminal
+Terminal=false
+Categories=Education;Science;Utility;