Projects From an Old Casette Player
Intro: Projects From an Old Casette Player
Hi! Did you ever thought that you can build many gagdets from an old electronic device? Yes, maybe. Now I'll show you that what can build from an old casette player/radio. I made an FM transmitter bug and a wind turbine battery charger. The most of the parts are from the casette player. I only needed a 9v battery, a propeller and a AA battery holder. The wind turbine is the easiest project that I've ever made I think because the circuit only requires the 6v DC motor from the casette player and a diode from the circuit.
The FM transmitter is a little bit harder project but works fine. Now let's begin!
STEP 1: Parts and Tools
For these projects you'll need only the casette player, soldering iron and some crafting tools.
STEP 2: Salvaging Components
Open your casette player or radio then take out as much electronic components that you can. I've found inside a bad speaker :-( , but the other components were good. Removed capacitors and and te resistors. Then I found inside a microphone. These parts are perfect to make an FM transmitter from them. And the 6v DC motor is also perfect for a wind turbine.
STEP 3: FM Transmitter
So you'll need :
- -a BC547 transitor
- -1nF and 22nF capacitor
- -4.7pF and 20pF capacitor
- -a coil with 4 turns-a small piece of PCB
- -9v battery clip
- -wire for the antenna
- -4.7k and 330ohm resistors
STEP 4: Heat Up Your Soldering Iron
Following the circuit diagramm make the circuit on a small piece of PCB. Add the 9v clip and the antenna then you're done.Add the 9v battery and test it with your phone's FM radio or with an FM reciever. If don't works try to modify the antenna's position until you'll get the chanell.
STEP 5: Test It!
But what is a FM transmitter?
Is a device that can amplify the microphone signals and transmitts frequency modulated signals via radio waves to your phone or to a reciewer. Works between 90 and 106mHz. My one was 97.8.
STEP 6: The Wind Turbine
You'll need the DC motor, a water bottle a germanium diode from the circuit of the casette player, a propeller and a AA nattery holder. That's all! The simplest wind turbine on the world.
STEP 7: Soldering
Solder the motor and battery together but add the diode between the positive wires. The anode needs to be connected to the motor's positive output and the catode to the battery's positive wire. This is very easy.
STEP 8: Crafting
Glue the turbine to the cap of the bottle and the battery holder to the bottle.
STEP 9: The End
Boom! We've made two nice projects only with reusing components from a casette player. Have a nice day, and thanks for wathing!
45 Comments
GaryA120 4 years ago
Also you say to use a BC547 transistor but in the diagram you show a 2N3904. Will they both work?
bostroglav 8 years ago
I searched in two old radios, but I did not find a bc547 transistor... could it be replaced with an other transistor?
If yes, tell me :)
agis68 7 years ago
but this series of transistor is very popular and cheap...
bostroglav 7 years ago
Imetomi 8 years ago
krstecd12 8 years ago
Great project, but can you tell me where can i find fm radio receiver circuit i want to make it.
Sorry i have bad english.
Imetomi 8 years ago
Isfaaq 9 years ago
jerenmie 8 years ago
Imetomi 9 years ago
Isfaaq 9 years ago
Nikolajco 9 years ago
how can i connect my phone on the transmitter ?
Imetomi 9 years ago
Cyberchipz 9 years ago
Why doesn't the battery make the motor run; not enough juice?
Imetomi 9 years ago
Cyberchipz 9 years ago
Oops, should have caught that... my eyes are old, I looked again... There it is, it's so tiny I overlooked it. lol. Thanks for the reply.
BruceE3 9 years ago
cool
pankajp 9 years ago
And tell me how can i increase the range
Imetomi 9 years ago
pankajp 9 years ago