Introduction: Upcycled Mini Speaker
Hi guys, this is Matthias again and today we are making an upcycled mini speaker. The volume on this will not be very loud because it does not have an amplifier but you can still control the volume with a phone or computer. Have fun!!!
Step 1: Supplies
For this project you will need:
a small speaker (I got mine from a broken walkie-talkie.)
a 3.5mm auxiliary cord
access to a 3d printer and filament
a soldering iron
a pair of wire-strippers. (A pair of scissors or a knife will work as well if you are pretty good at stripping wire with them.)
a phone or device that you can test the speaker with
Step 2: Cut and Strip Wire
Ok, so first we are going to cut the one of the plugs off the auxiliary cable. Next we are going to strip the end of the auxiliary cord that does not have the plug, there will be two to five different wires inside and if they have plastic insulation on them we are going to strip it. There are four different types of auxiliary connectors, TS, TRS, and TRRS, and if you want to learn about them in more depth please refer to the link here. Basically the number of letters in the name refers to the numbers of segments on the connector, for example, the connector in the pic is a TRS connector because it has three segments. So now we are going to strip all of the wires inside the main wire that you already stripped, if they do not have any insulation you can skip this step.
Thanks to Cheesey125 for asking me to add the difference between TS, TRS, and TRRS connectors.
Step 3: Testing It
Next you will need to find out which two wires are the signal (which is connected to the tip of the connector) and the ground (attached to the sleeve of the connector). To do this, plug the auxiliary cable into a device with a headphone jack and start some music. Now press two of the wires that you stripped against the two terminals on your speaker, if the speaker starts playing music then cut off any wires that you did not touch to the speaker. However if the speaker did not start playing music then keep trying different wire combinations until you hear the music playing out of the speaker, you might have to try a few times before you get it right.
Step 4: Soldering
Ok, so now that you have figured out which two wires you need and have cut off the other ones, we are going to solder the wires to the speaker. Just to double-check, press the wires against the speaker while playing music like you did on the last step. Now solder them to the two lower terminals on the speaker (I circled them in the picture).
Step 5: 3d Printing
I have attached the files that I used for my speaker case and below is a link for the design on Tinkercad but you will probably need to modify the design for your speaker. The design was printed with 0.15mm layer height, no supports, and 80% infill. It will take about an hour and a half so grab a cup of coffee... or two... or three...
Step 6: Assembly
Last of all we are going to put the speaker into the 3d printed frame. The wire comes out the slot in the frame and then finally, the cap fits on top of the speaker. All done!!!
Step 7: Finished
Have fun and enjoy! This Instructable is entered in the Tiny Speed Challenge so if you appreciated this project give it a vote and a like. If you have any questions, comments, or concerns, please let me know in the comments section below.
Credits for the green filament go to my brother, Nathanael ;)
Participated in the
Tiny Speed Challenge