Digital Photo Frame Project

Overview

This project aims to create a simple, user-friendly digital photo frame that automatically displays pictures from a shared Google Photos album. It’s designed for non-technical users, requiring no interaction beyond plugging it in and turning it on. The frame will automatically connect to a pre-configured Wi-Fi network and display photos in a continuous slideshow.

Key Features:

• Google Photos Integration: Pulls images from a specific shared album.
• Automatic Boot and Slideshow: The device auto-starts and runs the slideshow on boot.
• Minimal User Interaction: Only requires power on/off using a physical switch.
• Automatic Display Control: The screen turns off during set hours (e.g., nighttime).
• Wi-Fi Pre-Configuration: Connects to a specific Wi-Fi network without any setup needed by the user.

Hardware Components:

• Raspberry Pi 4 (or alternative microcontroller)
• ~30-inch Display (Salvaged from an old laptop or bought separately)
• Power supply: 5V USB power supply with in-line switch
• Micro SD card (32GB): For OS and program storage
• Optional: 3D printed frame: Holds the display and Raspberry Pi in place
• HDMI cable: Connects the Raspberry Pi to the display

Software Stack:

• Raspberry Pi OS: Linux-based OS to run the frame.
• Google Photos API: To access and display images from the shared album.
• Python or JavaScript: To create the slideshow and control the frame’s functionality.
• Pillow/Pygame (Python) or HTML/CSS/JavaScript for image display.
• Cron Jobs: Automate display on/off at specific times.

Steps to Build:

1. Install Raspberry Pi OS on the Raspberry Pi.
2. Set up Wi-Fi: Pre-configure wpa_supplicant.conf with Wi-Fi credentials.
3. Google Photos API Setup: Authenticate using OAuth 2.0 and set up access to the shared album.
4. Create Slideshow Program: A Python or web-based app that fetches images and displays them in fullscreen mode.
5. Automatic Startup: Configure the system to auto-login and launch the slideshow script on boot.
6. Screen Power Control: Set up scripts to turn the display on/off during specified hours (e.g., using vcgencmd display_power).

Optional Customizations:

• 3D print a custom frame for the display.
• Use a physical power switch for ease of use.
• Add environmental sensors (e.g., ambient light sensor) to control brightness.