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S-Pen Anatomy- What's Inside It

OP Ravindra9

3rd January 2012, 04:27 PM   |  #1  
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I just took a "scalpel and tweezers" to open the S-Pen and have prepared this image for you.

Check it out to see whats inside your great Galaxy notes' S-Pen!! All the parts are arranged in the picture in the right order as they are actually placed in the S-Pen.

Just to complete the label legends:

1: The Nib (The front end of the nib is what we see pointing out and use for writing/drawing etc. The other end of this nib has a "protrusion" that fits in the hole of the "cap" )

2: The Cap (as mentioned, one end of this cap has a small hole that fits in the nib, while the other end has a "protrusion" that fits in the "rubber ring"). I checked with a magnet and found its made of "iron".

3: The Ring (it is made of rubber and sits between the "cap" and the "coil" part of the electronic circuit.

4a: Coil: Its wounded on a little iron rod and connected with the "electronic circuit".

4b: Electronic circuit: It has a little button (thats where I have marked the arrow and labeled as 4b). This little button is what actually gets pressed when we press the "external button" of S-Pen.

5: The tail/terminal end of the S-Pen: This is what is needs to be pulled out to take out the entire circuitry and the little parts out of the S-Pen!!

6: The External Button: This is whats needs to be TWIZZED out, so that the entire circuitry and the little parts can slide out from the terminal end of the S-Pen!!

7: The main body: You can see this body and make out now how everything is fit-in properly!

I did not find any direct source of electricity in the S-Pen, and thus based on principles of electronics, its apparent that the small little movement (kinetic energy) produced by the "NIB" due to action of writing/drawing etc.must be exciting the electrons (electric energy) in the wounded COIL (magnetic influx), which is used by the circuit for appropriate action!! (Well, this is my own guess and I am welcoming appropriate suggestions.

So that's it!! I opened my S-Pen as it was not functioning properly after it fell down due to which I was required to "press the pen" a lot to write / draw. So I just opened and just "RE-PLACED" respective parts properly and my S-Pen is working fine now!!!

I guess this info can be useful if you have similar troubles!! Nevertheless, this ANATOMY is still helpful to SEE into this beautiful tool of this Superb Device!!!

And yesss... if you found this useful... a click at the THANKS BUTTON shall well be appreciated!!!
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Last edited by oka1; 11th January 2012 at 11:45 PM.
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3rd January 2012, 05:21 PM   |  #2  
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Quote:
Originally Posted by Ravindra9

I did not find any direct source of electricity in the S-Pen, and thus based on principles of electronics, its apparent that the small little movement (kinetic energy) produced by the "NIB" due to action of writing/drawing etc.must be exciting the electrons (electric energy) in the wounded COIL (magnetic influx), which is used by the circuit for appropriate action!! (Well, this is my own guess and I am welcoming appropriate suggestions.

I'm pretty sure it's magnetic resonance not kinetic motion used to generate the power for the s-pen. That's what the coil is for. When the pen get's close enough to the screen's surface, the small magnetic field that is emitted by the screen is picked up by the coil and hence power is transferred wirelessly. Normally AMOLED displays do not generate any significant magnetic fields, so this is something that specifically needs to be done on the Note with Faraday grid either behind the screen or integrated into the screen itself. Basically it's a way of very accurately and actively tracking the s-pen's location.

I think this is also the reason that the Note specifically has warnings about keeping it away from any other strong magnetic fields; it could interfere or permanently damage the magnetic nature of the s-pen's functionality.
Last edited by Jade Eyed Wolf; 3rd January 2012 at 05:23 PM.
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3rd January 2012, 06:12 PM   |  #3  
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Quote:
Originally Posted by Jade Eyed Wolf

I'm pretty sure it's magnetic resonance not kinetic motion used to generate the power for the s-pen. That's what the coil is for. When the pen get's close enough to the screen's surface, the small magnetic field that is emitted by the screen is picked up by the coil and hence power is transferred wirelessly. Normally AMOLED displays do not generate any significant magnetic fields, so this is something that specifically needs to be done on the Note with Faraday grid either behind the screen or integrated into the screen itself. Basically it's a way of very accurately and actively tracking the s-pen's location.

I think this is also the reason that the Note specifically has warnings about keeping it away from any other strong magnetic fields; it could interfere or permanently damage the magnetic nature of the s-pen's functionality.

Thanks. I get your point.
3rd January 2012, 08:52 PM   |  #4  
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I would love to try this with my pen and see if it fixes it, I have to press VERY hard to get anything to happen with it but being in the US its not worth dealing with a warranty for how little I use the pen.

Can you give some more details on how you actually got the pen open? I cant seem to figure out where to start.
3rd January 2012, 09:00 PM   |  #5  
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Quote:
Originally Posted by Jade Eyed Wolf

I think this is also the reason that the Note specifically has warnings about keeping it away from any other strong magnetic fields; it could interfere or permanently damage the magnetic nature of the s-pen's functionality.

I just had a thought, could this explain the offset problems some users have reported? Since all of the Notes are imports, perhaps some subset of s-pens were subject to enhanced scanning/x-raying that exposed them to damaging magnetic fields.
3rd January 2012, 09:23 PM   |  #6  
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Thank you, this was really interesting. I was wondering whats inside the S-pen everytime I take it out :)
3rd January 2012, 09:37 PM   |  #7  
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Is it really work due to detection or interference of magnetic field on screen surface? Its sound more like ordinary reaction same like when we use our finger on the capacitive touch screen.

http://en.m.wikipedia.org/wiki/Touchscreen

But why when i try the S pen on other capacitive touch screen and its did not work and cant be use except only on my SGN? I heard our S pen is actually are inductive pen! Not capacitive pen!

Sent from my GT-N7000 using XDA App
Last edited by naimmkassim; 3rd January 2012 at 09:50 PM.
3rd January 2012, 10:06 PM   |  #8  
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Are the 2 metallic components, to the right of the button, potentiometers?

If they are then we probly can adjust them to fine tune the offset of the pen on the screen and maybe the pressure sensitivity
3rd January 2012, 10:32 PM   |  #9  
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Thxxxxxxxxxxxxxxxx
4th January 2012, 04:28 AM   |  #10  
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It's a Wacom digitizer
The pen works on my tablet PC, just as my laptop's pen works with my Note. In fact, the eraser on my tablet's pen works on my Galaxy Note.

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