Ploopy Mouse Scroll Wheel with Magnet Drag Break
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New carriage and wheel that induces drag on added plastic washers for smoother scrolling.
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- Printables
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- Computers
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- Creative Commons — Attribution — Share Alike
Update 2025/03/16 V3: After use looks like 2 magnets are good if positioned closer to the wheel so updated the carriage.
Update 2025/03/08 V2: Updated for 1/16 magnets (N52). The magnets are set to push each other so the wheel wants to next between. The prior design I feel the drag was mostly from printing a new carriage. I only put two magnets in the carriage for indexing. and the filled the wheel. Now it has a more clicky feel to the wheel. You will need to shim the wheel close to the carriage to feel the magnets interact.
New carriage and wheel that induces drag on the plastic washers for smoother scrolling. With the additional friction on the plastic washer added between the wheel and the carriage it feels real smooth.
Problem:
I love the Ploopy mouse except one thing… the scroll wheel has little drag so my twitchy fingers will accidentally get it spinning.
Solution:
Using an attraction of the magnet to pull the magnet to one side so that there is always some sort of drag force. Original i was going to use ½ the ferrous rods so that it “clicked” but the feel was not good. Most good click feels for magnets need a repulsion and attraction “gearing”.
Build:
Print the parts. Add the magnet to the carriage. Add closet hanger rod into the wheel. I cut the rod rough on a metal cut disk, then installed into the wheel and sanded that flat on a belt sander. The RHS buttons were trimmed back farther than needed, i just trimmed them big so that i can play in the space. You do loose the self locating features.
Next Steps:
Next design I am going to create a mouse with “rest spots” using Mcmaster-Car 5862K137 magnets. I am guessing these tiny magnets in the wheel and two in the carriage will be able to get a good magnetic “click” feedback. Don't wait up for that new design I am no longer randomly switching weapons in games… so productivity is going to crater for a bit. ^^
+License should be under CERN Open Hardware License Version 2 - Strongly Reciprocal from Ploopy's repository (https://github.com/ploopyco/mouse/blob/master/LICENSE.md) So i am guessing that is cc-by-sa.