Once you've finished setting up your QT Py with CircuitPython, you can add these libraries to the lib folder:
- adafruit_led_animation
- neopixel.mpy
Copy neopixel.mpy file and the adafruit_led_animation folder to the CIRCUITPY flash drive that appears when you plug your QT Py into your computer via USB.
Then, you can click on the Download: Project Zip link in the window below to download the code file and .STL file.
# SPDX-FileCopyrightText: 2020 Liz Clark for Adafruit Industries
#
# SPDX-License-Identifier: MIT
import time
import board
import touchio
import neopixel
from adafruit_led_animation.animation.pulse import Pulse
from adafruit_led_animation.color import (
RED,
YELLOW,
ORANGE,
GREEN,
TEAL,
CYAN,
BLUE,
PURPLE,
MAGENTA,
GOLD,
PINK,
AQUA,
JADE,
AMBER
)
# NeoPixel pin
pixel_pin = board.A3
# number of NeoPixels
pixel_num = 68
# NeoPixels setup
pixels = neopixel.NeoPixel(pixel_pin, pixel_num, brightness=0.5, auto_write=False)
# animation setup
pulse = Pulse(pixels, speed=0.1, color=RED, period=5)
# two cap touch pins
touch_left = board.A1
touch_right = board.A2
# cap touch setup
bolt_left = touchio.TouchIn(touch_left)
bolt_right = touchio.TouchIn(touch_right)
# NeoPixel colors for animation
colors = [RED, YELLOW, ORANGE, GREEN, TEAL, CYAN, BLUE,
PURPLE, MAGENTA, GOLD, PINK, AQUA, JADE, AMBER]
# variable for color array index
c = 0
# debounce states for cap touch
bolt_left_state = False
bolt_right_state = False
while True:
# run animation
pulse.animate()
# debounce for cap touch
if not bolt_left.value and not bolt_left_state:
bolt_left_state = True
if not bolt_right.value and not bolt_right_state:
bolt_right_state = True
# if the left bolt is touched...
if bolt_left.value and bolt_left_state:
print("Touched left bolt!")
# increase color array index by 1
c += 1
# reset debounce state
bolt_left_state = False
# if the right bolt is touched...
if bolt_right.value and bolt_right_state:
print("Touched right bolt!")
# decrease color array index by 1
c -= 1
# reset debounce state
bolt_right_state = False
# if the color array index is bigger than 13...
if c > 13:
# reset it to 0
c = 0
# if the color array index is smaller than 0...
if c < 0:
# reset it to 13
c = 13
# update animation color to current array index
pulse.color = colors[c]
time.sleep(0.01)
Your QT Py CIRCUITPY drive should look like this after you load the libraries and code.py file:
You'll need to solder the 2MB SPI flash to the QT Py to run the code as written.
