The scroll wheel inside my mouse is a very simple but brilliant mechanism that basically pushes two buttons in succession every time I scroll it fwd one click. The succession of the pressing of these two buttons is opposite if I scroll the wheel in the other direction. Thus it can tell which direction I am turning it and how far or fast I have turned it.
So I de-soldered this scroll wheel from my mouse and replaced it with two fabric buttons which I can now basically gallop on with my fingers to control the scrolling of my mouse and it is a very inconvenient action but I still think it is cool.
Step 1: Materials and Tools
- Cheapest mouse you can find (hopefully it will be very similar to mine inside)
- Pen and paper
- Screw driver
- Soldering iron
- Helping hands
- De-solder or de-soldering tool
- Wire cutters
- Wire strippers
- Crocodile clips
Step 2: Open the mouse
But basically look for screws on the bottom of the mouse, they might be hidden under stickers or little stuck on feet. Make sure you get all the screws out and then the mouse should open nicely. Inside there will probably be more screws keeping the circuit board in place. I have learned that it is good practice to take photos of the circuit as soon as you have opened it because later on if wires come loose or you want to reverse your actions these photos will come in super handy!
So take photos and even notes.