Instructables
Picture of Designer Electronics Gadgets

This is my designer electronics gadget project using used mobiles and laptops. The gadget like MP3 player, Amplifier, Sound Boxes, Audio Pin Junction, Pen Drive, Pen Torch, designed using laptop keys and aluminum sheets. The car mp3 player is converted into portable mp3 player with charging option and it is powered by mobile battery. It has play/pause, prev/next and channel buttons. Laptop display is used as mp3’s screen guard and It has provision for USB, audio output pin, battery charging socket, and a switch is connected for switch-on mp3 player and charging battery.

Power amplifier is a simple circuit using LM386, it also powered using mobile battery and has option for charging. And speakers from mobile and laptop used in sound boxes. The speaker pins are cut into half the size so that its size matches the gadget’s size.

Material used:

1. Car MP3 Player
2. Used Laptop and Mobile
3. Mobile Batteries
4. Electronic Components
5. Aluminium and Plastic Sheets

check out…

 
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Step 1: MP3 Player

Step 2: MP3 power supply and wiring

Picture of MP3 power supply and wiring
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I have used mobile batteries for both project, for MP3 player 3.7V/ 600mAh / Li-Ion (BL-5B) battery I used. And MP3 is Car Kit MP3 player, I have detached MP3 player board from its power adapter unit and directly applied power supply 3.7v to the board.

I designed and kept its case size according to the MP3 player board size, and height according to keyboard key. Except removing power adapter, Head phone jack and USB port form MP3 as it as the board is placed inside the case. Wiring simple, after removing thin plate above the each switch on the board wire is fixed by soldering.

Step 3: Amplifier

Picture of Amplifier
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The amplifier set has simple amplifying circuit; the circuit is powered by a IC LM386.

Step 4: Speakers

Picture of Speakers
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Step 5: Speaker

Picture of Speaker
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Step 6: Spliter Box

Picture of Spliter Box
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Junction/ split box for the sound boxes.

Step 7: Pen torch

Picture of Pen torch
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This is my pen torch. Works with two small LED and three button cells, the PCB case is designed to load three cells, two LED, Switch and Refill. The LED is chopped to fit into the pen.

Olek41013 days ago

Could you give part list for spliter box i want to make it

lnoels24 days ago
Nice
humxa1 month ago
How come your lm386 amp works on 3.7 volts? Isnt it too low? And how much battery life do you get with it?
rbinford21 month ago

curious about if you will be able to easily replace/charge the batteries in these projects? Also, for the MP3 Player, did you basically just gut a mp3 player and re-case it or use special components? Finally, can you provide more detail on wiring the buttons for that particular project? thanks, and great work!

sorry, i missed the details about the charging of the mp3 player. Couldn't easily recognize a charging circuit/port from the pictures but do see it in the description now. What model of mp3 player did you use? thanks again

crishrx (author)  rbinford21 month ago

I have uploaded step two regarding power supply and wiring, i think this will clear you doubt, and video will upload soon. thank you..:-)

crishrx (author)  rbinford21 month ago

Sure rbinford2 i will explain you by uploading detailed pics and video.

kenyer1 month ago

really nice. I'm going to make the thumb-drive. I love the looks of that.

Praveens1 month ago

very nice innovative

Kweek1 month ago

You sir are a genius. This is the coolest thing I have ever seen.

Good one!! i will try it by myself

Technogala2 months ago

It's really interesting and useful! I'm really inspired.

loki20122 months ago
Nice work!
l19bal2 months ago

They look brilliant! Seriously this is really good work!

timcaird2 months ago

Brilliant ideas for keyboard keys! I particularly like the pen drive case - very smart looking and I could just see it working as a present for someone with their initials :)

crishrx (author)  timcaird2 months ago

thank you :-), really.

SoHa SMART2 months ago

this is great...just great!

crishrx (author)  SoHa SMART2 months ago

Thank you...:-)

Sorunome2 months ago

This is a pretty neat idea!

crishrx (author)  Sorunome2 months ago

Thank you ....:-)

Aleator7772 months ago

I've thought about doing something similar to this for a while. Impressively executed! The FUN flash drive really seals this.

crishrx (author)  Aleator7772 months ago

Thank you... :-)