As of CircuitPython 9, a mount point (folder) named /sd is required on the CIRCUITPY drive. Make sure to create that directory after upgrading CircuitPython.

CircuitPython Setup

Your Adafruit PyPortal should already come with CircuitPython but maybe there's a new version, or you overwrote your board with Arduino code! In that case, see the below for how to reinstall or update CircuitPython. Otherwise you can skip this and proceed with the build.

Images on internal flash

The code looks for an "images" folder on the CIRCUITPY drive by default. If it can't find any there, it'll search for images on the SD card.

Images on SD Card

If no images are on the internal storage, the code will search on the microSD card. The microSD card must be FAT32 and contain a folder named "images".

Image file names can be titled arbitrarily but avoid using special characters, hyphens and the sort. Your images must be in the following format and resolution.

  • Images must be 320 x 240 pixel 16-bit color .bmp files
Download our sample image pack to get you started!

Upload Code Files

Click the Download Project Bundle button below and save the zip file to your computer. Connect your PyPortal to your computer via a known good USB data+power cable. The PyPortal should show up as a drive in your file explorer app named CIRCUITPY.

Copy the files from the zip file to the CIRCUITPY drive.

# SPDX-FileCopyrightText: 2019 Anne Barela for Adafruit Industries
#
# SPDX-License-Identifier: MIT

import os
import board
import busio
import digitalio
import storage
import sdcardio
from adafruit_slideshow import PlayBackOrder, SlideShow, PlayBackDirection

# Default location to look is in internal memory
IMAGE_DIRECTORY = "/images"

switch = digitalio.DigitalInOut(board.D3)
switch.direction = digitalio.Direction.INPUT
switch.pull = digitalio.Pull.UP

spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
try:
    sdcard = sdcardio.SDCard(spi, board.SD_CS)
    vfs = storage.VfsFat(sdcard)
    storage.mount(vfs, "/sd")
    IMAGE_DIRECTORY = "/sd/images"
except OSError as error:
    print("No SD card, will only look on internal memory")

def print_directory(path, tabs=0):
    for file in os.listdir(path):
        stats = os.stat(path + "/" + file)
        filesize = stats[6]
        isdir = stats[0] & 0x4000

        if filesize < 1000:
            sizestr = str(filesize) + " by"
        elif filesize < 1000000:
            sizestr = "%0.1f KB" % (filesize / 1000)
        else:
            sizestr = "%0.1f MB" % (filesize / 1000000)

        prettyprintname = ""
        for _ in range(tabs):
            prettyprintname += "   "
        prettyprintname += file
        if isdir:
            prettyprintname += "/"
        print('{0:<20} Size: {1:>6}'.format(prettyprintname, sizestr))

        # recursively print directory contents
        if isdir:
            print_directory(path + "/" + file, tabs + 1)

try:
    print_directory(IMAGE_DIRECTORY)
except OSError as error:
    raise Exception("No images found on flash or SD Card")

# Create the slideshow object that plays through once alphabetically.
slideshow = SlideShow(board.DISPLAY, None, folder=IMAGE_DIRECTORY, loop=True,
                      order=PlayBackOrder.ALPHABETICAL, dwell=0)
while True:
    if not switch.value:
        print("Click!")
        slideshow.direction = PlayBackDirection.FORWARD
        slideshow.advance()
        while not switch.value:
            pass

Your CIRCUITPY drive should look like the file directory structure below:

CIRCUITPY

Libraries

These libraries should be on the CIRCUITPY drive lib/ directory:

  • adafruit_pyportal
  • adafruit_imageload
  • adafruit_slideshow
  • adafruit_bus_device
  • neopixel.mpy

This guide was first published on Mar 12, 2019. It was last updated on Jun 21, 2024.

This page (Code) was last updated on Jun 21, 2024.

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