@praxis87
Are you using a round magnet ? You only need 2 reeds.
Are you sure your magnet has radial polarization ? Imagine that on the GIF you have south/north as the white/black bar, the GIF has a better technical explanation of what is happening, sorry for my english.
Let say the magnets move from right to left, to synch with the GIF
1. North enters the trigger zone, reed a
2. North enters the trigger zone, reed b
--This is how the electronics know you`re scrolling up or down, if triggers a first, goes up, if triggers b first, goes down.
3. South enters the trigger zone, reed a
--Here is telling direction, N N S > UP
4. North leaves the trigger zone, reed a
/LOOP/
If you`re using tiny flat magnets, those need to face the reed switches S N S N S N S N S N S N, you cannot randomly position those
You can have as little as 2 magnets per wheel and you`ll only scroll what is considered one line per revolution.
Takes very fine adjustments to find the sweet spot, half mm can be the area where the right sequence is happening, depending on the size of the magnet/reeds, the smaller the harder is to find it
To simplify this process, add long wires to begin with for the reed switches.
Clamp down the scroll assembly, make sure the thumb wheel moves freely and you have access to the plastic bridge that faces the exposed magnets.
Open a tall webpage where you have to scroll alot or a very large text file.
Position the mouse cursor over it.
Center the scrollbar to the middle of the page/window.
Hold the reed assembly with one hand and get it close to the plastic bridge, with the other hand slowly start moving/rotating the scroll assembly/magnet.
Touch the plastic bridge over exposed magnet with the reed assembly, while the wheel assembly is rotating, move the reeds up/down the bridge, pay attention to the page/text file window
As you slowly move it back or forward you will notice that the page will start scrolling up/down.
After you find where will move in one direction, reverse thumb/magnet rotation. Move the magnet up/down the bridge till the page moves the other way.
Do this and you`ll find the spot where moving the wheel up/down, the page will scroll up/down. Sometimes is reversed, desolder the other 2 wires, not the ground, switch position.
Since the area where the right sequence is happening is so small, you`ll have trouble attaching the reeds to the bridge right where needs to be.
First, take a mental note on how far/close is the reed asembly from the edge
Add a very tiny drop of superglue to the bridge, while moving the scroll with one hand, with the reeds on the other hand, get close enough to the bridge wthout touching the glue but close enough to find the spot again, then push down on superglue.
Most likely you will fail few times but you`ll get it, its important you dont use lots of superglue to begin with, after is glued in position you can add more.
Do not use hot glue unless you really know what you`re doing, reeds will demagnetise/damage at 180F
Reed switches need to be next to each other, yes
If you still have problems let me know, I can make a short video, or for $99.99/month you can join my club, named "I can superglue random stuff" and I`ll teach you in person
)