Step 2: Prepping the MP3 Player Shield
The “Music Maker” MP3 Shield component arrives from Adafruit with some assembly required before it can be used. Here is what you get. Please refer to the picture below for identication and where the parts are to be soldered.
- The shield itself.
- A 2x3 female header. When this part is soldered on as indicated in the picture, it will plug into a corresponding 2x3 male header on the Arduino Mega. Note: in this picture, we are looking at the TOP of the MP3 shield. This part should be soldered on UNDERNEATH.
- 2-pin terminal blocks x2. These two parts are soldered on TOP of the shield and give us terminal blocks to insert the speaker wires and secure them with the screws built into them.
- A stick of male header pins. These pins can be broken into separate segments using a pair of needle nose pliers. We need a 10-pin segment, two 8-pin segments, and a 6-pin segment. These segments are soldered on the shield UNDERNEATH where indicated by the orange boxes.
We are almost there. Please refer to the picture below for the next steps. The jumpers in the red box (labeled 12, 13, and 11) need to be disconnected. You can do this by using a hobby knife and knocking out the small connectors between each side of the jumpers. Then, the jumpers in the green box (labeled MISO, SCK, and MOSI) need to be soldered closed.
For more information about these steps and the MP3 shield itself, please refer to Adafruit documentation and tutorials here: https://learn.adafruit.com/adafruit-music-maker-shield-vs1053-mp3-wav-wave-ogg-vorbis-player/overview.
Now we can plug the MP3 shield into the Mega and it’s ready to go, like what is pictured below. Note that you will see some extra header pins on top the shield. I didn’t cover soldering these pins as they are not necessary for this project.
In the next post, we’ll build a circuit to test the shield with the intercom whistle sound effect and a momentary switch.