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Audio modules for electronics project

In this video, I'm going to demonstrate various common audio modules - devices you can use to add music or sound effects to your Halloween scare props, escape rooms, model railways, or any other electronics projects! Particularly, I'll be comparing the following: DF Player Mini, Catalex Serial MP3 Player, (including the YX5200, YX6300, MH-ET LIVE MH2024K and AA20HF "variants"), DY-SV17F, DY-SV5W, DY-SV8F, DY-HV8F, DY-HV20T Some of these devices can be controlled by code sent from an Arduino, ESP32, or Raspberry Pi, whereas others can be used as a completely standalone device - requiring you only to connect a power supply and speaker. Playback of different sounds can then be controlled by pressing different buttons (or any other inputs), which makes them ideal for use in an interactive museum exhibit or other installation. Now, it's going to be impossible for me to convey the volume or quality of these modules in a video.... they're all just going to sound like the speakers you're currently listening on at the volume level you've set (possibly a little bit more distorted due to my microphone!). So, I'm going to concentrate on demonstrating these other features instead: - how to wire them correctly to minimise static noise, clicks, etc. and prevent erratic behaviour during playback - how to prepare and store audio data (using, e.g. using Audacity to normalise and trim audio files, and DriveSort to ensure that track 00004.mp3 really corresponds to track 4 on the SD card http://www.anerty.net/software/file/D... ) - comparing ease-of-use; some devices can be wired directly to the GPIO pins of a 3.3V or 5V microprocessor, whereas others need external components such as resistors or capacitors - testing audio latency between flash memory and SD card devices 00:00:00 - 00:00:25 Introduction 00:00:26 - 00:07:22 DF Player Mini MP3 Player 00:07:23 - 00:09:18 Catalex Serial MP3 Player 00:09:19 - 00:14:21 Clones and Counterfeit chips 00:14:22 - 00:21:52 DY-SV17F 00:21:53 - 00:24:20 DY-SV5W and DY-SV8F 00:24:21 - 00:26:53 Comparing SD card and flash latency 00:26:54 - 00:28:14 DY-HV20T and DY-HV8F 00:28:15 - 00:29:48 Preparing Audio files with Audacity 00:29:49 - 00:32:47 The importance of file naming 00:32:48 - 00:35:45 Using DriveSort to correct file indexes 00:35:46 - 00:37:53 Wrapup For further details about this, or any of my other #escaperoom tutorial videos, please see   / playfultech