Make your own wedding audio guestbook - a step-by-step guide!

Step-by-Step Tutorial: Creating a Wedding Audio Guestbook

Materials Needed:

• Regular telephone handset
• Microcontroller board (e.g., Teensy)
• Audio shield adapter
• SD card
• Microphone and speaker from the handset
• Hook switch from the handset
• Wires and connectors
• USB power supply

Step 1: Disassemble the Telephone Handset

• Open the telephone handset to access the microphone, speaker, and hook switch.
• Identify the wires connected to the microphone, speaker, and hook switch.

Step 2: Wire the Components to the Microcontroller

• Connect the microphone, speaker, and hook switch wires to the microcontroller using a screw terminal or soldering.
• Ensure proper connections for recording and playback functionalities.

Step 3: Install Required Software

• Download and install the Teensyduino software for programming the microcontroller.
• Load the necessary libraries for audio recording and playback.

Step 4: Write the Code

• Define the pins for audio input/output, SD card communication, and hook switch detection in the code.
• Set up the audio recording, playback, and switch detection functions.
• Customize the code to match the behavior of the telephone handset.

Step 5: Test and Debug

• Upload the code to the microcontroller and power it up.
• Lift the handset to trigger recording, replace it to end recording, and test playback functionality.
• Debug any issues and fine-tune the system as needed.

Step 6: Retrieve and Convert Recordings

• Retrieve the recorded audio files from the SD card to a computer.
• Use Audacity to import raw audio files, convert them to WAV format for easy playback.
• Optionally, use Sox command-line tool for batch conversion to MP3 format.

Step 7: Customize and Enjoy

• Customize the audio guestbook with a personalized greeting message.
• Set up the system at your wedding reception or party for guests to leave messages.
• Listen to and cherish the recorded memories for years to come.

By following these steps, you can create your own interactive audio guestbook using a regular telephone handset and a microcontroller board. Enjoy creating a unique and memorable experience for your special event!