Vertical Garden Barometer

first code commit

Vertical_Garden_Barometer/code.py

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+
+"""
+Read the barometric reading in the air
+Visualize air reading changes over time as a color animation on a NeoPixel strip
+Display a "sinking" or "rising" graphic on the screen along with recent reading data
+
+Code by Erin St Blaine for Adafruit Industries
+"""
+
+import time
+import board
+import neopixel
+from adafruit_clue import clue
+import adafruit_fancyled.adafruit_fancyled as fancy
+import displayio
+from adafruit_display_text import label
+from adafruit_bitmap_font import bitmap_font
+
+
+num_leds = 79 #number of LEDs in your strip
+timeToCheck = 100 # set the amount of time between sensor checks. 7800 is approx. 1 hour
+
+# Barometer or Thermometer? Uncomment the section you want to use
+
+# BAROMETER RANGES (hPa)
+# set desired reading range -- the NeoPixel palette choice will be determined by these thresholds
+deviceType = 0
+min_reading = 960
+med_reading = 965
+high_reading= 970
+max_reading = 975
+
+"""
+# THERMOMETER RANGES (C)
+# set desired temperature range -- the NeoPixel palette choice will be determined by these thresholds
+deviceType = 1
+min_reading = 25
+med_reading = 27
+high_reading= 31
+max_reading = 33
+"""
+
+#get an initial sensor reading
+if deviceType ==0:
+    reading = clue.pressure
+else:
+    reading = clue.temperature
+
+#set up variables for "remembering" past readings
+reading1 = reading
+reading2 = reading1
+reading3 = reading2
+counter = 0
+toggle = 1  #for on/off switch on button A
+displayOn = 1  #to turn the display on and off with button B
+
+clue.display.brightness = 0.8
+clue_display = displayio.Group(max_size=4)
+
+# draw the rising image
+rising_file = open("rising.bmp", "rb")
+rising_bmp = displayio.OnDiskBitmap(rising_file)
+rising_sprite = displayio.TileGrid(rising_bmp, pixel_shader=displayio.ColorConverter())
+clue_display.append(rising_sprite)
+
+# draw the sinking image
+sinking_file = open("sinking.bmp", "rb")
+sinking_bmp = displayio.OnDiskBitmap(sinking_file)
+sinking_sprite = displayio.TileGrid(sinking_bmp, pixel_shader=displayio.ColorConverter())
+clue_display.append(sinking_sprite)
+
+# Create text
+# first create the group
+text_group = displayio.Group(max_size=5, scale=1)
+# Make a label
+reading_font = bitmap_font.load_font("/font/RacingSansOne-Regular-29.bdf")
+reading_font.load_glyphs("0123456789ADSWabcdefghijklmnopqrstuvwxyz:!".encode('utf-8'))
+reading_label = label.Label(reading_font, color=0xffffff, max_glyphs=15)
+reading_label.x = 10
+reading_label.y = 24
+text_group.append(reading_label)
+
+reading2_label = label.Label(reading_font, color=0xdaf5f4, max_glyphs=15)
+reading2_label.x = 10
+reading2_label.y = 54
+text_group.append(reading2_label)
+
+reading3_label = label.Label(reading_font, color=0x4f3ab1, max_glyphs=15)
+reading3_label.x = 10
+reading3_label.y = 84
+text_group.append(reading3_label)
+
+timer_label = label.Label(reading_font, color=0x072170, max_glyphs=15)
+timer_label.x = 10
+timer_label.y = 114
+text_group.append(timer_label)
+
+clue_display.append(text_group)
+clue.display.show(clue_display)
+
+# Define color Palettes
+waterPalette = [
+            0x00d9ff,
+            0x006f82,
+            0x43bfb9,
+            0x0066ff]
+icePalette = [
+            0x8080FF,
+            0x8080FF,
+            0x8080FF,
+            0x0000FF,
+            0xC88AFF]
+sunPalette = [
+            0xffaa00,
+            0xffdd00,
+            0x7d5b06,
+            0xfffca8]
+firePalette = [
+            0xff0000,
+            0xff5500,
+            0x8a3104,
+            0xffaa00 ]
+forestPalette = [
+            0xccffa8,
+            0x69f505,
+            0x05f551,
+            0x2c8247]
+
+#set up default initial palettes, just for startup
+palette = forestPalette
+palette2 = waterPalette
+palette3 = icePalette
+
+# Declare a NeoPixel object on pin A4 with num_leds pixels, no auto-write.
+# Set brightness to max because we'll be using FancyLED's brightness control.
+pixels = neopixel.NeoPixel(board.A4, num_leds, brightness=1.0,
+                           auto_write=False)
+
+offset = 0  # Positional offset into color palette to get it to 'spin'
+
+while True:
+    # use button A to toggle the NeoPixels on or off by changing brightness
+    if clue.button_a:
+        if toggle == 1:
+            toggle = 0
+            pixels.brightness = 0
+            clue.display.brightness = 0
+        elif toggle == 0:
+            toggle = 1
+            pixels.brightness = 1.0
+            clue.display.brightness = 0.8
+    if clue.button_b:
+    #Toggle only the display on and off
+        if displayOn == 0:
+            clue.display.brightness = 0.8
+            displayOn = 1
+        else:
+            clue.display.brightness = 0
+            displayOn = 0
+
+    #assign color palette to NeoPixel section 1 based on the current reading reading
+    if reading1 < min_reading:
+        palette = firePalette
+    elif reading1 > min_reading and reading1 < med_reading:
+        palette = sunPalette
+    elif reading1 > med_reading and reading1 < high_reading:
+        palette = forestPalette
+    elif reading1 > high_reading and reading1 < max_reading:
+        palette = waterPalette
+    else:
+        palette = icePalette
+    #Map colors to pixels. Adjust range numbers to light up specific pixels. This configuration
+    # maps to a reflected gradient, with pixel 0 in the upper left corner
+    # Load each pixel's color from the palette using an offset, run it
+    # through the gamma function, pack RGB value and assign to pixel.
+    for i in range(23, 31):  #center right -- present moment
+        color = fancy.palette_lookup(palette, offset + i / num_leds)
+        color = fancy.gamma_adjust(color, brightness=0.25)
+        pixels[i] = color.pack()
+
+    for i in range(63, 71): #center left -- present moment
+        color = fancy.palette_lookup(palette, offset + i / num_leds)
+        color = fancy.gamma_adjust(color, brightness=0.25)
+        pixels[i] = color.pack()
+
+    for i in range(16, 23): #top mid right  -- 1 cycle ago
+        color = fancy.palette_lookup(palette2, offset + i / num_leds)
+        color = fancy.gamma_adjust(color, brightness=0.25)
+        pixels[i] = color.pack()
+
+    for i in range(71, 78): #top mid left  -- 1 cycle ago
+        color = fancy.palette_lookup(palette2, offset + i / num_leds)
+        color = fancy.gamma_adjust(color, brightness=0.25)
+        pixels[i] = color.pack()
+
+    for i in range(31, 38): #bottom mid right  -- 1 cycle ago
+        color = fancy.palette_lookup(palette2, offset + i / num_leds)
+        color = fancy.gamma_adjust(color, brightness=0.25)
+        pixels[i] = color.pack()
+
+    for i in range(56, 63): #bottom mid left  -- 1 cycle ago
+        color = fancy.palette_lookup(palette2, offset + i / num_leds)
+        color = fancy.gamma_adjust(color, brightness=0.25)
+        pixels[i] = color.pack()
+
+    for i in range(0, 16): #top right  -- 2 cycles ago
+        color = fancy.palette_lookup(palette3, offset + i / num_leds)
+        color = fancy.gamma_adjust(color, brightness=0.25)
+        pixels[i] = color.pack()
+
+    for i in range(77, 79): #top left  -- 2 cycles ago
+        color = fancy.palette_lookup(palette3, offset + i / num_leds)
+        color = fancy.gamma_adjust(color, brightness=0.25)
+        pixels[i] = color.pack()
+
+    for i in range(38, 56): #bottom  -- 2 cycles ago
+        color = fancy.palette_lookup(palette3, offset + i / num_leds)
+        color = fancy.gamma_adjust(color, brightness=0.25)
+        pixels[i] = color.pack()
+
+    pixels.show()
+    offset += 0.01  # Bigger number = faster spin
+
+    reading_label.text = "Now  {:.1f}".format(reading1)
+    reading2_label.text = "Last  {:.1f}".format(reading2)
+    reading3_label.text = "Prev  {:.1f}".format(reading3)
+    timer_label.text = "{}".format(counter)
+    clue.display.show(clue_display)
+
+    #Is it time to update?
+    if counter > timeToCheck:
+        #This moves the current data to the "1 hour old" section of pixels and the "1 hour old" data
+        #to the "2 hours old" section of pixels
+        palette3 = palette2
+        palette2 = palette
+        reading3 = reading2
+        reading2 = reading1
+        reading1 = reading
+        #take a new sensor reading and reset the counter
+        if deviceType == 0:
+            reading = clue.pressure
+        else:
+            reading = clue.temperature
+        counter = 0
+        #if reading is rising, show rising image and position text at the bottom
+        if reading1 > reading2:
+            sinking_sprite.x = 300
+            reading_label.y = 134
+            reading2_label.y = 164
+            reading3_label.y = 194
+            timer_label.y = 224
+        #if reading is falling, show sinking image and position text at the top
+        elif reading2 < reading3:  #reading is falling
+            sinking_sprite.x = 0
+            reading_label.y = 24
+            reading2_label.y = 54
+            reading3_label.y = 84
+            timer_label.y = 114
+    #otherwise keep counting up
+    else:
+        counter = counter + 1