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Adafruit_Learning_System_Gu.../Vertical_Garden_Barometer/code.py
firepixie f83984ab85 Vertical Garden Barometer 
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2020-04-27 10:35:01 -07:00

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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
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