Open source computer mouse by Ploopy
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I bought a Ploopy Thumb a few years ago. I assembled it myself, and was pleasantly surprised at how easy it was (when actually following the instructions).
The small button on the right has broken twice, which wasn't a problem because I just downloaded the stl file and reprinted the button assembly.
I wanted horizontal scrolling, so I used QMK to make the trackball a scroll wheel when the right side button is pressed (that may explain the faster button wear). It was surprisingly easy, and there was even a comment in the source code pointing out which line I should modify for horizontal scrolling support. I guess they expected people to want this feature.
The price is high, but I don't expect to buy another mouse unless my needs change. The open source hardware and software is excellent, making repairability 10/10. The edges of the buttons are slightly rough, but I have the 3d printing files, so I get to choose what material it's made of and what post processing / smoothing is used. It hasn't bothered me enough to do anything about it.
While I can't recommend a trackball mouse to anyone, I can recommend Ploopy. It's one of the few products that I feel like I actually own.
What I really want is this, but with a trackpad instead of a trackball.
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I have a Logitech from 2003 or so. The feet are gone. The plastic under the feet is rubbed rmooth. The Omron switches are still great, no failure symptoms. Meanwhile I replaced a G500 after couple of years of use due to a switch developing "double-click" from wear. The reason I needed another wired mouse now is that another Logitech developed double-clicking. So yeah, exactly.
I had 2 Logitech m570s fail on me before I bought the Ploopy Thumb. So far it's lasted longer than either Logitech mouse, and looks like it will manage to be my longest surviving mouse.
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What I really want is this, but with a trackpad instead of a trackball.
wrote last edited by [email protected]They do have a trackpad, but not in this shape.
I was surprised when I started using the Steamdeck. The Steamdeck's trackpad felt almost identical to my trackball mouse, and it took effectively no time to get used to it.
The advantage of a trackball over a trackpad is that you can spin the ball for high movement speed, then stop it after a set time for fairly accurate distance. A trackball (or trackpad) will never be as accurate as a regular moue, but it is surprisingly usable (after a few months or practice).
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I needed another corded mouse and this time around I thought of @[email protected] and @[email protected] instead of Logitech's shareholders. These guys make open source mice among other open source hardware under the brand Ploopy. You can order one from them, assembled or as a kit, or you could print and build it entirely by yourself.
The mouse itself is pretty great. Coming from a long line of Logitech (MX518/G5/G500/G502), it's a bit larger than what I'm used to but I think I'm getting accustomed to it.
Here's another shot of it:
I've got to say "Ploopy" is one of the absolute worst names I've ever seen. Before I even saw the picture, I thought "I bet it looks like shit."
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Layer lines, too expensive.
Looks less comfortable than one of those 10~15€ brandless mouses at MediaMarkt
wrote last edited by [email protected]layer lines can be sanded down during making and/or improved upon massively if you are fine with it taking much longer to print. or own a better printer.
the price is steep, but its pre-made and post processed. i think the real value of it is in making it yourself for the price of the components and raw plastic if you already own a printer.
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I've got to say "Ploopy" is one of the absolute worst names I've ever seen. Before I even saw the picture, I thought "I bet it looks like shit."
it gives me a general "its probably entirely shit". that's really a bad name.
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Is it comfortable in the hand? The surface looks super rough
its 3d printed so it has layer lines. it can be improved or processed to be smoother though.
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I bought a Ploopy Thumb a few years ago. I assembled it myself, and was pleasantly surprised at how easy it was (when actually following the instructions).
The small button on the right has broken twice, which wasn't a problem because I just downloaded the stl file and reprinted the button assembly.
I wanted horizontal scrolling, so I used QMK to make the trackball a scroll wheel when the right side button is pressed (that may explain the faster button wear). It was surprisingly easy, and there was even a comment in the source code pointing out which line I should modify for horizontal scrolling support. I guess they expected people to want this feature.
The price is high, but I don't expect to buy another mouse unless my needs change. The open source hardware and software is excellent, making repairability 10/10. The edges of the buttons are slightly rough, but I have the 3d printing files, so I get to choose what material it's made of and what post processing / smoothing is used. It hasn't bothered me enough to do anything about it.
While I can't recommend a trackball mouse to anyone, I can recommend Ploopy. It's one of the few products that I feel like I actually own.
How do you use a trackball mouse? Does moving the mouse and moving the trackball both move the pointer? Or one moves the pointer and the other does something else?
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it gives me a general "its probably entirely shit". that's really a bad name.
After reading up it sounds like a decent product but they should definitely consider rebranding.
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Is it comfortable in the hand? The surface looks super rough
wrote last edited by [email protected]Looks like a bitch to clean. Gonna get all sorts of grease collecting in those grooves…
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I needed another corded mouse and this time around I thought of @[email protected] and @[email protected] instead of Logitech's shareholders. These guys make open source mice among other open source hardware under the brand Ploopy. You can order one from them, assembled or as a kit, or you could print and build it entirely by yourself.
The mouse itself is pretty great. Coming from a long line of Logitech (MX518/G5/G500/G502), it's a bit larger than what I'm used to but I think I'm getting accustomed to it.
Here's another shot of it:
Now do printers.
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How do you use a trackball mouse? Does moving the mouse and moving the trackball both move the pointer? Or one moves the pointer and the other does something else?
The mouse stays in one location with grippy feet and the trackball moves the cursor. There is no sensor for mouse movement. It does take a while to get used to.
The reason I chose it was that I didn't have enough desk space to move a mouse. I barely even had enough space to put the mouse. Now that I've moved house, I just like the novelty. It's not as accurate as a regular mouse.
I would love a mouse that could do both regular movement and trackball movement so I could have 4 axis inputs. Sadly, I haven't found any like that.
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They do have a trackpad, but not in this shape.
I was surprised when I started using the Steamdeck. The Steamdeck's trackpad felt almost identical to my trackball mouse, and it took effectively no time to get used to it.
The advantage of a trackball over a trackpad is that you can spin the ball for high movement speed, then stop it after a set time for fairly accurate distance. A trackball (or trackpad) will never be as accurate as a regular moue, but it is surprisingly usable (after a few months or practice).
wrote last edited by [email protected]I've used several trackballs, but they have all been seriously uncomfortable for me and my specific brand of RSI. My current "mouse" is a Steam Controller, but using it one-handed isn't great due to the uneven weight distribution. I also have much better accuracy using a trackpad vs a trackball.
Ideally, I just want a Steam Controller cut in half with a more confortable grip that doesn't dig into my palm.
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Now do printers.
Yes please!
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Chatgpt, give me the most business answer possible with airtight logic that eliminates the possibility of imagining a different way.
Chatgpt :
Logitech, like any publicly traded company, exists to maximize shareholder value, not product longevity, so using cheaper switches—even in a $120 mouse—isn’t corner-cutting, it’s strategic. A $0.10 upgrade per unit sounds trivial, but across millions of units it erodes margins significantly, and more durable components risk extending the product lifespan beyond the optimal refresh cycle, cutting into predictable repeat sales. Making switches hard to replace and binding functionality to proprietary software isn't anti-consumer—it's deliberate lock-in that ensures brand dependency and data capture, both of which are monetizable assets. With shareholders expecting year-over-year growth, not stability, any move that delays repurchase or encourages repair undermines the core business model. The $613M profit on $4.3B revenue isn’t greed—it’s the result of a finely tuned system where every design and pricing decision serves one purpose: sustainable, scalable profitability.
The robot knows what's up.
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I've got to say "Ploopy" is one of the absolute worst names I've ever seen. Before I even saw the picture, I thought "I bet it looks like shit."
It's like an alien name out of Rick and Morty.
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It's like an alien name out of Rick and Morty.
you mean you dont like my plumbus? what about glorp?
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Layer lines, too expensive.
Looks less comfortable than one of those 10~15€ brandless mouses at MediaMarkt
Layer lines
You say "free hand grip for less strain" weird.
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Now do printers.
pretty stupid that we can print in 3 dimensions well, while 2-dimension remains locked behind capitalism.
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I think they're 3D-printing them. Maybe one day they'll progress to something that gives a nicer result
Yes they are 3D printed
Poorly 3D printed.
The layering issue could be solved by orienting the object at a 45° angle
Or even smaller layer height. That looks like .2 or .24 minimum.
