init sketch

Author: ladyada

CircuitPython_WeatherCloud/code.py

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+import time
+import board
+import busio
+import random
+from digitalio import DigitalInOut
+import neopixel
+from adafruit_esp32spi import adafruit_esp32spi
+from adafruit_esp32spi import adafruit_esp32spi_wifimanager
+import adafruit_requests as requests
+import adafruit_fancyled.adafruit_fancyled as fancy
+
+print("ESP32 Open Weather API demo")
+
+# Use cityname, country code where countrycode is ISO3166 format.
+# E.g. "New York, US" or "London, GB"
+LOCATION = "Manhattan, US"
+
+# Get wifi details and more from a secrets.py file
+try:
+    from secrets import secrets
+except ImportError:
+    print("WiFi secrets are kept in secrets.py, please add them there!")
+    raise
+
+# Set up where we'll be fetching data from
+DATA_SOURCE = "http://api.openweathermap.org/data/2.5/weather?q="+LOCATION
+DATA_SOURCE += "&appid="+secrets['openweather_token']
+
+# If you are using a board with pre-defined ESP32 Pins:
+esp32_cs = DigitalInOut(board.ESP_CS)
+esp32_ready = DigitalInOut(board.ESP_BUSY)
+esp32_reset = DigitalInOut(board.ESP_RESET)
+
+spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
+esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
+status_light = neopixel.NeoPixel(board.NEOPIXEL, 1, brightness=0.2) # Uncomment for Most Boards
+wifi = adafruit_esp32spi_wifimanager.ESPSPI_WiFiManager(esp, secrets, status_light)
+pixels = neopixel.NeoPixel(board.D2, 16, brightness=1.0, auto_write=False)
+pixels.fill(0x050505)
+pixels.show()
+
+# clouds palette
+cloudy_palette = [fancy.CRGB(1.0, 1.0, 1.0), # White
+                  fancy.CRGB(0.5, 0.5, 0.5), # gray
+                  fancy.CRGB(0.5, 0.5, 1.0)] # blue-gray
+# sunny palette
+sunny_palette = [fancy.CRGB(1.0, 1.0, 1.0), # White
+                 fancy.CRGB(1.0, 1.0, 0.0),# Yellow
+                 fancy.CRGB(1.0, 0.5, 0.0),] # Orange
+# thunderstorm palette
+thunder_palette = [fancy.CRGB(0.0, 0.0, 1.0), # blue
+                   fancy.CRGB(0.5, 0.5, 0.5), # gray
+                   fancy.CRGB(0.5, 0.5, 1.0)] # blue-gray
+last_thunder_bolt = None
+
+palette = None  # current palette
+pal_offset = 0  # Positional offset into color palette to get it to 'spin'
+levels = (0.25, 0.3, 0.15)  # Color balance / brightness for gamma function
+raining = False
+thundering = False
+
+weather_refresh = None
+weather_type = None
+while True:
+    # only query the weather every 10 minutes (and on first run)
+    if (not weather_refresh) or (time.monotonic() - weather_refresh) > 600:
+        try:
+            response = wifi.get(DATA_SOURCE).json()
+            print("Response is", response)
+            weather_type = response['weather'][0]['main']
+            weather_type = 'Thunderstorm' # manually adjust weather type for testing!
+
+            print(weather_type) # See https://openweathermap.org/weather-conditions
+            # default to no rain or thunder
+            raining = thundering = False
+            if weather_type == 'Clouds':
+                palette = cloudy_palette
+            if weather_type == 'Rain':
+                palette = cloudy_palette
+                raining = True
+            if weather_type == 'Sunny':
+                palette = sunny_palette
+            if weather_type == 'Thunderstorm':
+                palette = thunder_palette
+                raining = thundering = True
+                # pick next thunderbolt time now
+                next_bolt_time = time.monotonic() + random.randint(1, 5)
+            weather_refresh = time.monotonic()
+        except RuntimeError as e:
+            print("Some error occured, retrying! -", e)
+            time.sleep(5)
+            continue
+
+    if palette:
+        for i in range(len(pixels)):
+            color = fancy.palette_lookup(palette, pal_offset + i / len(pixels))
+            color = fancy.gamma_adjust(color, brightness=levels)
+            pixels[i] = color.pack()
+        pixels.show()
+        pal_offset += 0.01  # Bigger number = faster spin
+
+    if raining:
+        # don't have a droplet every time
+        if (random.randint(0, 25) == 0):  # 1 out of 25 times
+            pixels[random.randint(0, len(pixels)-1)] = 0xFFFFFF  # make a random pixel white
+            pixels.show()
+
+    # if its time for a thunderbolt
+    if thundering and (time.monotonic() > next_bolt_time):
+        print("Ka Bam!")
+        # fill pixels white, delay, a few times
+        for i in range(random.randint(1, 3)):  # up to 3 times...
+            pixels.fill(0xFFFFFF) # bright white!
+            pixels.show()
+            time.sleep(random.uniform(0.01, 0.2)) # pause
+            pixels.fill(0x0F0F0F) # gray
+            pixels.show()
+            time.sleep(random.uniform(0.01, 0.3)) # pause
+        # pick next thunderbolt time now
+        next_bolt_time = time.monotonic() + random.randint(5, 15) # between 5 and 15 s
+

CircuitPython_WeatherCloud/secrets.py

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+# This file is where you keep secret settings, passwords, and tokens!
+# If you put them in the code you risk committing that info or sharing it
+
+secrets = {
+    'ssid' : 'my_ssid',
+    'password' : 'my_pass',
+    'timezone' : "America/New_York", # http://worldtimeapi.org/timezones
+    'openweather_token' : 'putYourOpenWeatherTokenHere',
+    }