With this example, tailored to the PyGamer, you can have a portable picture frame. Put the BMP files in the main folder of your SD card, put the code below in code.py, and make sure you've configured mount_sd.py!
This example can be adapted to a lot of CircuitPython boards with support for displayio.
For more information on making bitmap files, check out this guide.
import os
import time
import board
import digitalio
import displayio
import mount_sd
display = board.DISPLAY
# The bmp files on the sd card will be shown in alphabetical order
bmpfiles = sorted("/sd/" + filename for filename in os.listdir("/sd")
if filename.lower().endswith("bmp"))
while True:
for filename in bmpfiles:
print("showing", filename)
bitmap_file = open(filename, "rb")
bitmap = displayio.OnDiskBitmap(bitmap_file)
tile_grid = displayio.TileGrid(bitmap,
pixel_shader=displayio.ColorConverter())
group = displayio.Group()
group.append(tile_grid)
display.show(group)
# Show the image for 10 seconds
time.sleep(10)
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