Putting the Blue in Bluetooth Mouse
Written by Luke Waidmann   
Wednesday, 31 August 2005
This guide is for changing the LED in an Apple BlueTooth Mouse.  The actual modding isn't too hard, the tricky part is gettting the mouse apart.

Ok, so the tools I used for this are:

Apple BlueTooth Mouse

2 Blue LED's - 3.7 Volt, 20mA, 2600mcd

1.4mm Phillips head precision screwdriver

Silver-bearing Solder

Soldering Iron

Leatherman Micra (I love this thing) 

 

 

 

Right, so to take apart the mouse, first take of the battery cover, then insert the knife inbetween the grey and black rings, prying out the grey ring.  It's stuck in mainly with tabs, only a bit of glue, so it comes out without much trouble. Then work the knife around the edge underneath the clear plastic to pry the white ring off.  It's glued all the way around, so you have to work the knife around.  Ok, now, push the white plastic piece where your thumb is supposed to go into to release the front left of the battery case and the same thing to the other side to release the front right.  Then just pull up on the battery piece and it will swing off of its hinges.  There is a bit of resistance, but nothing much, it comes off pretty easily.  Flip this over and remove the 4 screws, two on the top section, two holding the plastic "bridge" that's over the light sensor.  All that's left for disassembly is the little clip holding the battery springs down in the back - just insert the knife under and pop it up.  I'm sorry i couldn't get pictures during this, but here's all of the piecses on their own:

 

Right, forgot to add a bit of rubbing alchol on the material - just pour some in to the top of the mouse to remove the grey paint in the apple.

 

Ok, here's a picture of the led bracket:

 

 

I tried heating up the solder holding in the led to pull it out, but to no avail, so eventually I just inserted the scissors on my micra and cut the two leads.  to get the led out, pull back the tab in front with a fingernail and push the led through with a corner of something.  I balance my needle nose pliers on my leg and used the tip to push it through.

 Ok, to get the new LED in, first cut one of the leads down to the length it needs (Just above the flattened out section on the lead 4mm or so to take a guess):

That was the first time I cut the lead, its about 2x bigger than needed.  I didn't get any pictures of the soldering, but be quick with it, don't leave the iron resting on the circuit board for longer than it takes for the solder to melt.  You shouldn't need any extra solder for this part.  Make sure you have the filament pointing to the the white dot.  On the underside, you can see a circle with one flattened edge, if your led is the same as mine, it should have a matching flattened edge.  Ok, with that done, I then put an additional led on the top of the board, so the apple would glow a bit.  to do this, just put it on where the leads from the first poke thru the board.  This is where I used extra solder.  This is what you should have:

 

Ok, now put everything back together, make sure to put in the clear focusing piece of plastic and white plastic piece that was behind that before you sccrew down the board.  I don't really have any advice for putting most of it back together, it just needs a bit of elbow grease here and there.  However, to put the battery enclosure back into the top, put in the front first then push the hinges together.

 

 

 

As such.  So I got to this point, and realized it wouldn't close.  I opened it back up, took out the top LED, filed it down on both the top and bottom, shortened the leads so it would fit right on top of the circuit board and it still wouldn't close all the way.  So then I used the flat head screw driver piece on my micra to scratch of some of the white plastic on the underside of the mouse.  Finally this worked and I put the whole thing back together.  A bit of superglue to hold in the white and grey rings finishes the project.  Here are are few final pics:


 

 Sorry the pictures aren't that great, as it turns out, it's pretty hard to take a picture of an LED inside of a reflective white mouse... But it looks pretty cool on my desk. 

Edit:  My roommate is a genius, "you should add a picture, but take it in the dark with no flash" ... right, should have thought of that myself, so here you go (pictures still aren't that great, but neither is my camera):

 

 

 

Edit:  I don't recommend anything past this point, the LED flickers a lot when not in use, so dremmelling out the white plastic exposes this flicker, which is pretty annoying.  Removing the paint on the apple logo didn't expose the mouse enought to notice the flicker, it just glows when the mouse is being used and nothing when not in use. 

To fix the flicker I found a constant voltage source to put the second LED on, which worked well for overpowering the flickering led, but it has demolished my battery life.  Fortunately I have rechargeable AA's. 

well shit, I don't have class on Thursday, why stop there:


 

Edit:  I just got a multi-meter and found where there is a constant voltage to be used on the second led to make the mouse glow:

 

 

It's kinda hard to see, but on the wires connecting the two boards together, the filament points to (the positve end - long leg) the second pin from the bottom on the left side.  The short, - lead goes to the first pin from the top on the right side.




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