anecdata

// 8x16 LED Matrix I2C FeatherWing
#define MATRIX_ADDR 0x70 // default; 0x71-0x77 with jumper changes
Adafruit_8x16minimatrix matrixDisplay = Adafruit_8x16minimatrix();

setup() {
  matrixDisplay.begin(MATRIX_ADDR); // void
}

void scrollMatrixString(String tString, int scrollDelay, int bright, int rot, int tSize, boolean tWrap, int tColor) {
  int tLength = tString.length();

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import board
import time
from digitalio import DigitalInOut, Direction  # , Pull
import neopixel
import random

led = DigitalInOut(board.D13)
led.direction = Direction.OUTPUT

# PyPortal and Feather M4 schematics show built-in NeoPixel is WS2812B

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"""
PyPortal CP 4.0.0-beta.3 + adafruit-circuitpython-bundle-4.x-mpy-20190307

Using esp32spi_localtime.py as a base, add in subsequent `wifi.get` calls to other websites.  
Note that the original file did not use `reponse.close()`.

Test:
GET server headers from several different websites sequentially; examine server headers. 
Between each fetch, call `response.close()` _and_ `response = None`

anecdata

### Keybase proof

I hereby claim:

  * I am anecdata on github.
  * I am anecdata (https://keybase.io/anecdata) on keybase.
  * I have a public key ASD5V5yuw1bzDAc9GeoYelcE3wiOrKa3f9fbJM_O362I9Qo

To claim this, I am signing this object:

anecdata

(1) USB power to ItsyBitsy M4 + ESP32 Breakout

typical output:

Retrying ESP32 connection
 Error response to command
...
Retrying ESP32 connection
 Timed out waiting for SPI char
...

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re: https://github.com/adafruit/Adafruit_CircuitPython_ESP32SPI/issues/11#issuecomment-483268050

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import board
import os
import gc
import time
import random
import displayio
from adafruit_display_shapes.rect import Rect

def overwrite_bitmap(xw, yh, gmin, gmax):
    x = random.randrange(0, xw)

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import board
import os
import busio
import digitalio
import displayio
import storage
import adafruit_sdcard
import adafruit_ili9341
from adafruit_slideshow import PlayBackOrder, SlideShow, PlayBackDirection

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    # ESP32_GPIO_PINS:
    # https://github.com/adafruit/Adafruit_CircuitPython_ESP32SPI/blob/master/adafruit_esp32spi/digitalio.py
    # 0, 1, 2, 4, 5, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 25, 26, 27, 32, 33, 34, 35, 36, 39
    #
    # Used for ESP32SPI
    #             5,         14,             18,             23,                 33

    # Avialable ESP32SPI Outputs (digital or PWM 'analog') with NINA FW >= 1.3.1
    #
    # Adafruit ESP32 Breakout

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"""
    This test will initialize the display using displayio
    and draw a solid red background
    """

import board
import displayio
import time

print('Begin')