after watching many useful tutorials of king of random,kipkay ,aeszok and other athours i decided to make my own.for this i collected the materials.but on my way of collecting materials i found a new concept of making a small speaker.i could not buy big neodimiyam magnets and so i took out very small magnets from toys and then tried and actually it worked.and it is under only 25 cents.yes its true.so lets get started.
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Step 1: Things needed
for this project you will need:
1)small neodymium magnets very small cilyndrical magnets:3. each costs 0.05 cents total 15 cents
2)a sheet of paper. cost 0.02cents
3)a piece of cardboard .can be found from any junkyards
4)some magnetic wires.can be salvaged from any electronics parts
5)two buisness cards.can be found from any buisnessmen
thats all you need.it will cost you17cents.
Step 2: Making the voice coil part 1
a speaker has 4 main parts:the voice coil,the magnet ,the diaphragm,and the suspention.when electricity is passed through the speaker the voice coil becomes magnetized and due to the position of magnet the coil attracts it and repels it thus creating vibrations which we receive as sound.so firstly lets make our voice coil.take a strip of paper and roll it to make a cilynder shape.the diametre of the mouth of the cilynder should be more than the diametre of the magnets.now glue it so that it does not not unfold.
Step 3: Make the voice coil part 2
now take some magnetic wires and leaving some inches of wires on the end start coiling the wire on the paper cilynder.coil it 50 times.now again leaving some inches of wire on the end make a knot so that the wires do not unfold
Step 4: Make the voice coil part 3
now burn of the insulation of the wires on the ends using lighter
Step 5: Make the diaphragm of the speaker
take the card board and cut a small piece of it.now attach the voice coil to it using glue
Step 6: Make the base
now take the card board and cut a piece from it which is slightly bigger than the diaphragm.now using glue glue the magnets to its middle
Step 7: Make the suspention part 1
take the buiseness cards and fold them into a shape like W.