Question on a neopixel project, but its more of a general question
I am using a Feather ESP32-S2 to drive 30 neopixel strip. The ESP32 is connected to my computer so that I can use Mu to program it. I also have the power side of the neopixels connected to a USB outlet to power them. I also have a 3,7v battery connected to the Batt terminal on the feather.
This set up works great. but the minute I unplug my computer the neopixels start acting weird, they still emit lights, but they don't follow the rainbow cycle etc that I programmed.
So my general question - shouldnt the feathers function as a standalone computer once I program them and they have the py files stored on them? Or do they need to stay connected to the computer? What am I doing wrong?
If it helps here is my code
Code: Select all
"""CircuitPython Essentials NeoPixel example"""
import time
import board
# For internet
import ipaddress
import ssl
import wifi
import socketpool
import adafruit_requests
# For Adafruit IO
import busio
from digitalio import DigitalInOut
from adafruit_esp32spi import adafruit_esp32spi
from adafruit_esp32spi import adafruit_esp32spi_wifimanager
from rainbowio import colorwheel
import neopixel
J
# Definitions For the neopixel
pixel_pin = board.A1
num_pixels = 30
pixels = neopixel.NeoPixel(pixel_pin, num_pixels, brightness=1, auto_write=False)
def color_chase(color, wait):
for i in range(num_pixels):
pixels[i] = color
time.sleep(wait)
pixels.show()
time.sleep(0.5)
def rainbow_cycle(wait):
for j in range(255):
for i in range(num_pixels):
rc_index = (i * 256 // num_pixels) + j
pixels[i] = colorwheel(rc_index & 255)
pixels.show()
time.sleep(wait)
RED = (255, 0, 0)
YELLOW = (255, 150, 0)
GREEN = (0, 255, 0)
CYAN = (0, 255, 255)
BLUE = (0, 0, 255)
PURPLE = (180, 0, 255)
PINK = (227, 28, 121)
ORANGE = (255, 83, 73)
WHITE = (255, 255, 255)
TUNGSTEN = (255, 214, 179) # 2600 KELVIN
HALOGEN = (255, 241, 224) # 3200 KELVIN
CARBONARC = (255, 250, 244) # 5200 KELVIN
HIGHNOONSUN = (255, 255, 251) # 5400 KELVIN
DIRECTSUN = (255, 255, 255) # 6000 KELVIN
OVERCASTSKY = (201, 226, 255) # 7000 KELVIN
CLEARBLUE = (64, 156, 255) # 20000 KELVIN
# STUFF FOR WIFI CONNECT
# URLs to fetch from
TEXT_URL = "http://wifitest.adafruit.com/testwifi/index.html"
JSON_QUOTES_URL = "https://www.adafruit.com/api/quotes.php"
JSON_STARS_URL = "https://api.github.com/repos/adafruit/circuitpython"
# Get wifi details and more from a secrets.py file
try:
from secrets import secrets
except ImportError:
print("WiFi secrets are kept in secrets.py, please add them there!")
raise
print("ESP32-S2 WebClient Test")
print("My MAC addr:", [hex(i) for i in wifi.radio.mac_address])
print("Available WiFi networks:")
for network in wifi.radio.start_scanning_networks():
print("\t%s\t\tRSSI: %d\tChannel: %d" % (str(network.ssid, "utf-8"), network.rssi, network.channel))
wifi.radio.stop_scanning_networks()
print("Connecting to %s"%secrets["ssid"])
wifi.radio.connect(secrets["ssid"], secrets["password"])
print("Connected to %s!"%secrets["ssid"])
print("My IP address is", wifi.radio.ipv4_address)
ipv4 = ipaddress.ip_address("8.8.4.4")
print("Ping google.com: %f ms" % (wifi.radio.ping(ipv4)*1000))
pool = socketpool.SocketPool(wifi.radio)
requests = adafruit_requests.Session(pool, ssl.create_default_context())
print("Fetching text from", TEXT_URL)
response = requests.get(TEXT_URL)
print("-" * 40)
print(response.text)
print("-" * 40)
print("Fetching json from", JSON_QUOTES_URL)
response = requests.get(JSON_QUOTES_URL)
print("-" * 40)
print(response.json())
print("-" * 40)
print()
print("Fetching and parsing json from", JSON_STARS_URL)
response = requests.get(JSON_STARS_URL)
print("-" * 40)
print("CircuitPython GitHub Stars", response.json()["stargazers_count"])
print("-" * 40)
print("done")
pixels.fill((0, 0, 0))
pixels.show()
# START CODE FOR GET WEATHER
# Use cityname, country code where countrycode is ISO3166 format.
# E.g. "New York, US" or "London, GB"
LOCATION = secrets['timezone']
# Set up where we'll be fetching data from
DATA_SOURCE = "http://api.openweathermap.org/data/2.5/weather?q="+secrets['timezone']
DATA_SOURCE += "&appid="+secrets['openweather_token']
print("Response is", response)
# START THE MAIN LOOP
while True:
# pixels.fill(HALOGEN)
# pixels.show()
# Increase or decrease to change the speed of the solid color change.
# time.sleep(0.5)
color_chase(RED, 0.1) # Increase the number to slow down the color chase
color_chase(YELLOW, 0.1)
color_chase(GREEN, 0.1)
color_chase(CYAN, 0.1)
color_chase(BLUE, 0.1)
color_chase(PURPLE, 0.1)
# rainbow_cycle(0.5) # Increase the number to slow down the rainbow
