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simple_weather_app

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simple_weather_app [2026/09/10 14:54] – [Test Open-Meteo] walkeradminsimple_weather_app [2026/09/10 15:03] (current) – walkeradmin
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 ---- ----
 ===== Introduction ===== ===== Introduction =====
 +\\ 
 +<color #ed1c24>Please be aware, that this project uses the same hardware, wiring and 3D Printed enclosure as this project</color> [[pico_wifi_monitor_with_lcd|Pico Wifi Analyzer with LCD]] s<color #ed1c24>o please have a look at this project for much more information, and to get the 3D enclosure if you want it.</color> What you see here is the differences between the Wifi Analyzer and the Weather App projects.
 +\\ 
 \\  \\ 
 {{ :weatherapppico.png?500 |}} {{ :weatherapppico.png?500 |}}
Line 167: Line 170:
 Now we can move on to the full code. Now we can move on to the full code.
 \\  \\ 
 +\\ 
 +----
 +==== The Full Weather App Code ====
 +\\ 
 +Don't forget in this new code to do the following:
 +
 +  * Ensure  your WIFI details are correct.
 +  * Ensure that your Latitude and Longitude details are correct.
 +
 +Download the following code and save it as 'Weather.py' and run it from Thonny. If it is working fine, you can save it as main.py so it runs as soon as you turn on your Pico.
 +\\ 
 +\\ 
 +----
 +<code:python | download>
 +import network
 +import time
 +import urequests
 +import ujson
 +import framebuf
 +from machine import RTC, SPI, Pin
 +from st7789nf import (
 +    ST7789, COLOR_BLACK, COLOR_WHITE, COLOR_CYAN, COLOR_AMBER, 
 +    COLOR_YELLOW, COLOR_NAVY, COLOR_GRAY, COLOR_DARKGRAY
 +)
 +
 +# ==========================================
 +# CONFIGURATION
 +# ==========================================
 +WIFI_SSID = "YOUR_WIFI_SSID"
 +WIFI_PASS = "YOUR_WIFI_PASSWORD"
 +
 +# London Coordinates
 +LATITUDE = "51.5074"
 +LONGITUDE = "-0.1278"
 +
 +# BST / UK Daylight Saving Time offset (1 for BST, 0 for GMT)
 +BST_OFFSET = 1 
 +
 +# Open-Meteo API Endpoint (configured for mph)
 +WEATHER_URL = (
 +    "https://api.open-meteo.com/v1/forecast?"
 +    f"latitude={LATITUDE}&longitude={LONGITUDE}"
 +    "&current=temperature_2m,relative_humidity_2m,apparent_temperature,weather_code,wind_speed_10m"
 +    "&hourly=temperature_2m,weather_code"
 +    "&wind_speed_unit=mph"
 +    "&timezone=auto"
 +)
 +
 +# ==========================================
 +# HARDWARE PINS (SPI1)
 +# ==========================================
 +LCD_WIDTH  = 320
 +LCD_HEIGHT = 240
 +
 +PIN_SCK  = 10  # GP10
 +PIN_MOSI = 11  # GP11
 +PIN_RST  = 12  # GP12
 +PIN_DC   = 13  # GP13
 +PIN_CS   = 14  # GP14
 +
 +# ==========================================
 +# BITMAP ICONS (16x16)
 +# ==========================================
 +ICON_SUN_16 = bytes([
 +    0x01, 0x80, 0x41, 0x82, 0x20, 0x04, 0x10, 0x08,
 +    0x03, 0xC0, 0x07, 0xE0, 0x0F, 0xF0, 0x0F, 0xF0,
 +    0x0F, 0xF0, 0x0F, 0xF0, 0x07, 0xE0, 0x03, 0xC0,
 +    0x10, 0x08, 0x20, 0x04, 0x41, 0x82, 0x01, 0x80
 +])
 +
 +ICON_CLOUD_16 = bytes([
 +    0x00, 0x00, 0x00, 0x00, 0x01, 0xC0, 0x03, 0xE0,
 +    0x07, 0xF0, 0x0F, 0xF8, 0x1F, 0xFC, 0x3F, 0xFE,
 +    0x7F, 0xFF, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
 +    0x7F, 0xFE, 0x3F, 0xFC, 0x00, 0x00, 0x00, 0x00
 +])
 +
 +ICON_RAIN_16 = bytes([
 +    0x01, 0xC0, 0x03, 0xE0, 0x07, 0xF0, 0x0F, 0xF8,
 +    0x1F, 0xFC, 0x3F, 0xFE, 0x7F, 0xFF, 0xFF, 0xFF,
 +    0x7F, 0xFE, 0x00, 0x00, 0x24, 0x48, 0x48, 0x90,
 +    0x12, 0x24, 0x24, 0x48, 0x48, 0x90, 0x00, 0x00
 +])
 +
 +ICON_THUNDER_16 = bytes([
 +    0x01, 0xC0, 0x03, 0xE0, 0x07, 0xF0, 0x0F, 0xF8,
 +    0x1F, 0xFC, 0x3F, 0xFE, 0x7F, 0xFF, 0xFF, 0xFF,
 +    0x03, 0x80, 0x07, 0x00, 0x0E, 0x00, 0x1F, 0xC0,
 +    0x03, 0x80, 0x07, 0x00, 0x06, 0x00, 0x04, 0x00
 +])
 +
 +# ==========================================
 +# NETWORK & API FUNCTIONS
 +# ==========================================
 +def connect_wifi(ssid, password, timeout=15):
 +    wlan = network.WLAN(network.STA_IF)
 +    wlan.active(True)
 +    if not wlan.isconnected():
 +        print(f"Connecting to Wi-Fi: {ssid}...")
 +        wlan.connect(ssid, password)
 +        start_time = time.time()
 +        while not wlan.isconnected():
 +            if time.time() - start_time > timeout:
 +                print("Wi-Fi connection failed.")
 +                return False
 +            time.sleep(0.5)
 +    print(f"Wi-Fi Connected! IP: {wlan.ifconfig()[0]}")
 +    return True
 +
 +def sync_ntp():
 +    import ntptime
 +    try:
 +        ntptime.settime()
 +        print("NTP Sync Success!")
 +        return True
 +    except Exception as e:
 +        print(f"NTP Sync Failed: {e}")
 +        return False
 +
 +def fetch_weather():
 +    print("Fetching updated weather data...")
 +    try:
 +        response = urequests.get(WEATHER_URL)
 +        if response.status_code == 200:
 +            data = ujson.loads(response.text)
 +            response.close()
 +            
 +            current = data.get("current", {})
 +            current_weather = {
 +                "temp": current.get("temperature_2m"),
 +                "feels_like": current.get("apparent_temperature"),
 +                "humidity": current.get("relative_humidity_2m"),
 +                "wind_speed": current.get("wind_speed_10m"),
 +                "code": current.get("weather_code")
 +            }
 +            
 +            hourly = data.get("hourly", {})
 +            hourly_times = hourly.get("time", [])
 +            hourly_temps = hourly.get("temperature_2m", [])
 +            hourly_codes = hourly.get("weather_code", [])
 +            
 +            rtc = RTC()
 +            now_hour = rtc.datetime()[4]
 +            
 +            forecast = []
 +            for i in range(len(hourly_times)):
 +                slot_hour = int(hourly_times[i].split("T")[1].split(":")[0])
 +                if slot_hour >= now_hour and len(forecast) < 5:
 +                    forecast.append({
 +                        "hour": f"{slot_hour:02d}:00",
 +                        "temp": hourly_temps[i],
 +                        "code": hourly_codes[i]
 +                    })
 +            return {"current": current_weather, "forecast": forecast}
 +        else:
 +            response.close()
 +            return None
 +    except Exception as e:
 +        print(f"Weather fetch failed: {e}")
 +        return None
 +
 +# ==========================================
 +# GRAPHICS HELPER FUNCTIONS
 +# ==========================================
 +def draw_text_scaled(display, text, x, y, color, scale=2):
 +    """Renders scaled text using character framebuffers."""
 +    char_buf = bytearray(8 * 8 * 2)
 +    char_fb = framebuf.FrameBuffer(char_buf, 8, 8, framebuf.RGB565)
 +    
 +    for idx, char in enumerate(text):
 +        char_fb.fill(COLOR_BLACK)
 +        char_fb.text(char, 0, 0, color)
 +        
 +        char_x = x + int(idx * 8 * scale)
 +        for row in range(8):
 +            for col in range(8):
 +                pixel = char_fb.pixel(col, row)
 +                if pixel != COLOR_BLACK:
 +                    display.fill_rect(char_x + int(col * scale), y + int(row * scale), int(scale), int(scale), color)
 +
 +def draw_bitmap_scaled(display, bitmap_bytes, x, y, width, height, fg_color, scale=1):
 +    """Draws 1-bit monochrome bitmaps to screen."""
 +    for row in range(height):
 +        for col in range(width):
 +            byte_idx = (row * width + col) // 8
 +            bit_idx = 7 - (col % 8)
 +            pixel = (bitmap_bytes[byte_idx] >> bit_idx) & 1
 +            if pixel:
 +                if scale == 1:
 +                    display.pixel(x + col, y + row, fg_color)
 +                else:
 +                    display.fill_rect(x + col * scale, y + row * scale, scale, scale, fg_color)
 +
 +def get_wmo_icon_and_color(wmo_code):
 +    """Maps Open-Meteo WMO weather codes to icons and colors."""
 +    if wmo_code in (0, 1):
 +        return ICON_SUN_16, COLOR_YELLOW
 +    elif wmo_code in (2, 3, 45, 48):
 +        return ICON_CLOUD_16, COLOR_WHITE
 +    elif 51 <= wmo_code <= 67 or 80 <= wmo_code <= 82:
 +        return ICON_RAIN_16, COLOR_CYAN
 +    elif wmo_code >= 95:
 +        return ICON_THUNDER_16, COLOR_AMBER
 +    else:
 +        return ICON_CLOUD_16, COLOR_GRAY
 +
 +def render_ui(display, weather_data):
 +    """Draws dark theme UI layout."""
 +    display.fill(COLOR_BLACK)
 +    
 +    # --- TOP BAR ---
 +    display.fill_rect(0, 0, 320, 32, COLOR_NAVY)
 +    display.hline(0, 32, 320, COLOR_CYAN)
 +    
 +    rtc = RTC()
 +    dt = rtc.datetime()
 +    hour = (dt[4] + BST_OFFSET) % 24
 +    time_str = f"{hour:02d}:{dt[5]:02d}:{dt[6]:02d}"
 +    
 +    # Header Title (Larger Purbrook text) & Live Clock
 +    draw_text_scaled(display, "Purbrook", 10, 8, COLOR_WHITE, scale=1.9)
 +    draw_text_scaled(display, time_str, 185, 8, COLOR_AMBER, scale=2)
 +    
 +    # --- CENTER PANEL ---
 +    if weather_data and "current" in weather_data:
 +        curr = weather_data["current"]
 +        
 +        # Main Weather Icon (Scale=3 -> 48x48)
 +        icon_data, icon_color = get_wmo_icon_and_color(curr["code"])
 +        draw_bitmap_scaled(display, icon_data, x=15, y=42, width=16, height=16, fg_color=icon_color, scale=3)
 +        
 +        # Temperature & Feels Like
 +        draw_text_scaled(display, f"{curr['temp']:.1f}C", 75, 40, COLOR_WHITE, scale=3)
 +        draw_text_scaled(display, f"Feels: {curr['feels_like']:.1f}C", 75, 70, COLOR_GRAY, scale=2)
 +        
 +        # Environmental Details (In mph)
 +        display.hline(15, 98, 290, COLOR_DARKGRAY)
 +        draw_text_scaled(display, f"Humidity: {curr['humidity']}%", 15, 106, COLOR_CYAN, scale=2)
 +        draw_text_scaled(display, f"Wind: {curr['wind_speed']} mph", 15, 128, COLOR_AMBER, scale=2)
 +
 +    # --- BOTTOM STRIP (5-Hour Forecast) ---
 +    display.hline(0, 152, 320, COLOR_CYAN)
 +    
 +    if weather_data and "forecast" in weather_data:
 +        slot_width = 320 // 5
 +        for idx, slot in enumerate(weather_data["forecast"][:5]):
 +            x = idx * slot_width
 +            
 +            if idx > 0:
 +                display.vline(x, 152, 88, COLOR_DARKGRAY)
 +            
 +            # Forecast Hour Header
 +            draw_text_scaled(display, slot["hour"][:2], x + 18, 158, COLOR_AMBER, scale=1.5)
 +            
 +            # Forecast Icon
 +            f_icon, f_color = get_wmo_icon_and_color(slot["code"])
 +            draw_bitmap_scaled(display, f_icon, x=x + 16, y=175, width=16, height=16, fg_color=f_color, scale=2)
 +            
 +            # Forecast Temperature
 +            draw_text_scaled(display, f"{int(slot['temp'])}C", x + 12, 212, COLOR_WHITE, scale=2)
 +
 +    # Push to display
 +    display.show()
 +
 +# ==========================================
 +# MAIN ROUTINE
 +# ==========================================
 +spi1 = SPI(1, baudrate=20_000_000, sck=Pin(PIN_SCK), mosi=Pin(PIN_MOSI))
 +
 +tft = ST7789(
 +    spi=spi1,
 +    width=LCD_WIDTH,
 +    height=LCD_HEIGHT,
 +    dc=Pin(PIN_DC),
 +    reset=Pin(PIN_RST),
 +    cs=Pin(PIN_CS)
 +)
 +
 +if connect_wifi(WIFI_SSID, WIFI_PASS):
 +    sync_ntp()
 +
 +current_weather_data = fetch_weather()
 +
 +last_weather_fetch = time.time()
 +WEATHER_REFRESH_INTERVAL = 900  # 15 Minutes
 +
 +print("Starting main dashboard execution loop...")
 +
 +while True:
 +    now = time.time()
 +    
 +    if now - last_weather_fetch >= WEATHER_REFRESH_INTERVAL:
 +        updated_data = fetch_weather()
 +        if updated_data:
 +            current_weather_data = updated_data
 +        last_weather_fetch = now
 +        
 +    render_ui(tft, current_weather_data)
 +    time.sleep(1)
 +</code>
 \\  \\ 
 ---- ----
  
simple_weather_app.1789052091.txt.gz · Last modified: by walkeradmin