SparkFun MP3 Trigger - 18 - Review

Looking for an affordable and versatile audio playback unit for your next project? If yes, then you may want to consider checking out the SparkFun MP3 Trigger. This embedded audio device is designed to play MP3 tracks directly from microSD cards with FAT32 or FAT16 format. But there's more! The MP3 Trigger is also equipped with various functions that offer users more control and customization options, such as 18 external input pins, a full-duplex serial control port, real-time volume control, and onboard navigation switch.

At first glance, the SparkFun MP3 Trigger looks like a simple device with a headphone jack and a few pins. But don't judge a book by its cover! This audio unit can do more than just play back audio files. It's designed to be easily integrated into various projects as it comes with 18 external input pins. Users can program and map these pins to trigger specific MP3 tracks or alternate functions using a microcontroller or other input devices like buttons, switches, or sensors.

Additionally, the SparkFun MP3 Trigger can be completely controlled via a full-duplex serial port. This enables users to change the volume, select tracks, and trigger events in real-time. And, with up to 255 different tracks available for remote control, users can easily set up a customized playlist for their projects.

Another nifty feature of the SparkFun MP3 Trigger is that it supports both random and sequential track selection modes. This makes it ideal for projects that require a randomized audio playlist or those that require a specific order for playback.

The MP3 Trigger also has an onboard navigation switch that allows users to access and play all MP3 tracks stored on the microSD card without the need for an external input. This button can be easily programmed to trigger alternate functions as well, making it even more versatile.

In terms of performance, the SparkFun MP3 Trigger can support up to 192kbps stereo playback, ensuring decent audio quality. And, with real-time volume control and even volume up/down features, users can fine-tune the audio output to their liking.

Lastly, it's worth mentioning that the MP3 Trigger is also very affordable compared to other similar audio units available in the market. Although it requires a few additional items to function, such as a microSD card, power source, and audio output device, the overall cost is still relatively low.

In conclusion, the SparkFun MP3 Trigger is an excellent audio playback device for those on a budget who want more control and customization options for their projects. With its 18 external input pins, full-duplex serial control, real-time volume control, and onboard navigation button, there are countless ways to incorporate this unit into various projects. Plus, its random/sequential track selection modes and even volume features make it stand out among other similar devices. For its price point and features, it's a great value and worth considering for your next project.

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SparkFun MP3 Trigger - 18

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