1  # SPDX-FileCopyrightText: 2018 Kattni Rembor for Adafruit Industries
 2  #
 3  # SPDX-License-Identifier: MIT
 4  
 5  import time
 6  from adafruit_circuitplayground.express import cpx
 7  import touchio
 8  import simpleio
 9  import board
10  
11  cpx.pixels.brightness = 0.2
12  touch = touchio.TouchIn(board.A1)
13  
14  DRY_VALUE = 1500  # calibrate this by hand!
15  WET_VALUE = 2100  # calibrate this by hand!
16  
17  while True:
18      value_A1 = touch.raw_value
19      print((value_A1,))
20  
21      # fill the pixels from red to green based on soil moisture
22      percent_wet = int(simpleio.map_range(value_A1, DRY_VALUE, WET_VALUE, 0, 100))
23      cpx.pixels.fill((100-percent_wet, percent_wet, 0))
24      time.sleep(0.5)