Neil Haddley - Developer & Technical Consultant

Gingerbread House

Neil Haddley • December 26, 2023

holiday.py

Python IOTraspberry-pipythonholidaygpio

BASH

1$ sudo apt-get update
2$ sudo  apt-get dist-upgrade
3
4$ python -m venv my-env
5$ source my-env/bin/activate
6
7$ pip install --upgrade pip setuptools wheel
8$ pip install opencv-contrib-python
9
10$ python
11>>> import cv2
12>>> print(cv2.__version__)
13
14$ pip install --upgrade luma.oled
15$ sudo raspi-config
16
17$ curl -o holiday.mp4 https://download-video.akamaized.net/...
18
19$ vi holiday.py
20$ python holiday.py

I opened Raspberry Pi Imager

I selected the Micro SD card

I clicked YES to include WIFI and logon credentials

I clicked YES

I moved the SD card from the MacBook to the Raspberry Pi

I plugged in the Raspberry Pi and used ping to access

I connected to the Raspberry Pi using secure shell (ssh)

I executed sudo apt-get update

I executed sudo apt-get dist-upgrade

I created a Python environment, activated it, and ran pip install

I ran pip install opencv-contrib-python and imported cv2 to verify OpenCV was installed

I ran pip install --upgrade luma.oled to install the library for the mini OLED display

I ran sudo raspi-config and selected the Interface Options menu option

I selected the I2C menu option

I selected Yes

I selected Ok

I selected Finish

I downloaded video file from https://pixabay.com/videos/girl-child-snow-snowflakes-window-191152/

I created and ran holiday.py. I noted that the cv.imshow("Img", frame) line is commented out

I wired up two displays

Sweet tooth

Edible Leaves

Raspberry Pi

Invader Zim

Traditional

Bluey

PYTHON

1from luma.core.interface.serial import i2c, spi, pcf8574
2from luma.core.interface.parallel import bitbang_6800
3from luma.core.render import canvas
4from luma.oled.device import ssd1306, ssd1309, ssd1325, ssd1331, sh1106, sh1107
5
6from time import sleep
7
8import cv2
9
10# OpenCV follows BGR color convention and PIL follows RGB color convention
11
12# Python Imaging Library
13from PIL import Image
14
15serial = i2c(port=1, address=0x3C)
16device = sh1106(serial)
17
18width =  device.width
19height = device.height
20
21cap = cv2.VideoCapture("holiday.mp4")
22while True:
23    ret, frame = cap.read()
24    if not ret:
25        break
26#    cv2.imshow("Img", frame)
27
28    color_coverted = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
29    pil_image = Image.fromarray(color_coverted)
30    image_r = pil_image.resize((width,height), Image.LANCZOS)
31    # Image.BICUBIC is another option
32    image_bw = image_r.convert("1")
33
34    device.display(image_bw)
35
36    key = cv2.waitKey(1)
37    if key == 27:
38        break
39
40cap.release()
41cv2.destroyAllWindows()