In order to code the gardner, first follow these instructions on getting CircuitPython and the necessary libraries installed on your CLUE board.
Once you've gotten the board set up, click Download: Project Zip below in the code guide. From the .zip file drag the two .bmp images to your CLUE's CIRCUITPY drive via USB.
Then, copy the code from the code-block below and paste it into the Mu editor and save it to your CLUE as code.py (or copy code.py from the zip file and place on the CIRCUITPY drive).
# SPDX-FileCopyrightText: 2020 John Park for Adafruit Industries
#
# SPDX-License-Identifier: MIT
# Bonsai Buckaroo + CLUE Plant Care Bot
import time
import board
from digitalio import DigitalInOut, Direction
from analogio import AnalogIn
from adafruit_clue import clue
from adafruit_display_text import label
import displayio
import terminalio
import pwmio
moist_level = 50 # adjust this value as needed for your plant
board.DISPLAY.brightness = 0.8
clue.pixel.fill(0) # turn off NeoPixel
clue_display = displayio.Group()
# draw the dry plant
dry_plant_file = open("dry.bmp", "rb")
dry_plant_bmp = displayio.OnDiskBitmap(dry_plant_file)
# CircuitPython 6 & 7 compatible
dry_plant_sprite = displayio.TileGrid(
dry_plant_bmp,
pixel_shader=getattr(dry_plant_bmp, "pixel_shader", displayio.ColorConverter()),
)
# CircuitPython 7 compatible
# dry_plant_sprite = displayio.TileGrid(
# dry_plant_bmp, pixel_shader=dry_plant_bmp.pixel_shader
# )
clue_display.append(dry_plant_sprite)
# draw the happy plant on top (so it can be moved out of the way when needed)
happy_plant_file = open("happy.bmp", "rb")
happy_plant_bmp = displayio.OnDiskBitmap(happy_plant_file)
# CircuitPython 6 & 7 compatible
happy_plant_sprite = displayio.TileGrid(
happy_plant_bmp,
pixel_shader=getattr(happy_plant_bmp, "pixel_shader", displayio.ColorConverter()),
)
# CircuitPython 7 compatible
# happy_plant_sprite = displayio.TileGrid(
# happy_plant_bmp, pixel_shader=happy_plant_bmp.pixel_shader
# )
clue_display.append(happy_plant_sprite)
# Create text
# first create the group
text_group = displayio.Group(scale=3)
# Make a label
title_label = label.Label(terminalio.FONT, text="CLUE Plant", color=0x00FF22)
# Position the label
title_label.x = 10
title_label.y = 4
# Append label to group
text_group.append(title_label)
soil_label = label.Label(terminalio.FONT, text="Soil: ", color=0xFFAA88)
soil_label.x = 4
soil_label.y = 64
text_group.append(soil_label)
motor_label = label.Label(terminalio.FONT, text="Motor off", color=0xFF0000)
motor_label.x = 4
motor_label.y = 74
text_group.append(motor_label)
clue_display.append(text_group)
board.DISPLAY.show(clue_display)
motor = DigitalInOut(board.P2)
motor.direction = Direction.OUTPUT
buzzer = pwmio.PWMOut(board.SPEAKER, variable_frequency=True)
buzzer.frequency = 1000
sense_pin = board.P1
analog = AnalogIn(board.P1)
def read_and_average(ain, times, wait):
asum = 0
for _ in range(times):
asum += ain.value
time.sleep(wait)
return asum / times
time.sleep(5)
while True:
# take 100 readings and average them
aval = read_and_average(analog, 100, 0.01)
# calculate a percentage (aval ranges from 0 to 65535)
aperc = aval / 65535 * 100
# display the percentage
soil_label.text = "Soil: {} %".format(int(aperc))
print((aval, aperc))
if aperc < moist_level:
happy_plant_sprite.x = 300 # move the happy sprite away
time.sleep(1)
motor.value = True
motor_label.text = "Motor ON"
motor_label.color = 0x00FF00
buzzer.duty_cycle = 2 ** 15
time.sleep(0.5)
# always turn off quickly
motor.value = False
motor_label.text = "Motor off"
motor_label.color = 0xFF0000
buzzer.duty_cycle = 0
if aperc >= moist_level:
happy_plant_sprite.x = 0 # bring back the happy sprite
