Instructables
Picture of Pringles Can Speaker
Pringles occasionally run a promotion where you get a speaker for the can. But why bother with all that, when you can make your own speaker from the Pringles can.

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Step 1: Watch The Video

Start by taking a moment to watch our video.

Step 2: Materials Needed

List of materials:


  • Some enamelled wire
  • Some sticky tape
  • A piece of A4 paper
  • A stack of magnets
  • Some old headphones (for testing the Pringles can speaker)
  • An empty can of Pringles

Tools Needed:


  • Junior hacksaw
  • Safety pin
  • A pair of scissors
  • A measuring tape

Step 3: Making the tube

Firstly cut a strip of paper about 3cm in height, from that strip cut a small piece long enough to wrap around a stack of magnets the same height. Ensure the paper is snugly wrapped and then tape into position. Repeat the process, putting another piece of paper around the first one and again securing with some sticky tape. These paper tubes should slide over each other freely.

Step 4: Making the coil

Take your enamelled wire and tape it to the outer paper, now carefully coil the wire around. Coil it until it's about a third of the way down, remember to keep the wire close together as you wrap it around. When you've gone far enough use another piece of sticky tape to secure into position. Give yourself plenty of wire for both connections of the coil, you can always trim these later if they are too long.

Once your copper coil is secured you can remove the inner paper tube and stack of magnets.

Step 5: Prepare the Pringles can

Picture of Prepare the Pringles can
straight line.jpg
clean.jpg
make hole.jpg
Now measure up about an 2.5cm from the metal base of the Pringles can and cut it to length with your junior hacksaw. To help you cut straight you can wrap the a4 paper around the can, giving you a straight line to follow.

When the Pringles can is cut, don't forget to give the inside a quick clean and make a small hole for the wires using your safety pin.
awesome R5 months ago
That's awesome!
avenger221 year ago
Cool.
Go Repairs (author)  avenger221 year ago
Thanks.
johnyradio1 year ago
ok, so how does this work? driving an audio signal into the magnet coil causes an oscillating magnetic field around the coil, correct? i'm guessing there's some kind of movement induced by that in the magnets. but, the batteries are stuck to the metal base, and therefore cannot move, right?
Go Repairs (author)  johnyradio1 year ago
This is a simple speaker and works similar to any other, it is the coil that moves. There are no batteries in this design, they are a stack of magnets.
oops, i meant magnets, not batteries. Ok, so the MAGNETS are not moving, only the voice coil. So the coil (and the paper tube it's attached to) moves due to its magnetic relationship to the magnets. That in turn causes air to oscillate within the tube, kinda like a piston? That vibrating air in turn causes the plastic lid to vibrate. Right? thx
Go Repairs (author)  johnyradio1 year ago
Yeah, you have it.:)
dabmg101 year ago
Heh this was featured on hack a day good job
Go Repairs (author)  dabmg101 year ago
Thanks.
BlueDJ1 year ago
Cool
Go Repairs (author)  BlueDJ1 year ago
Thanks.