The github[0] for it is kinda cool. Uses the 'CERN Open Hardware Licence Version 2 - Strongly Reciprocal'. The assembly instructions[1] give a bit of a hands on feel.
They had some more details on a reddit post[2] it looks like.
It always seems like a missed opportunity that trackballs don't detect when you twist the ball. It would be so natural for spinning a model in CAD or zooming.
The easiest approach would probably be to add a second optical sensor and do some math to calculate the twist rate.
These have been made on and off since 1995 at the latest. They never work out even though you'd think they'd be super popular for 3d modelers at least. I first encountered one for SGI workstations.
> [..] and a plurality of Sensors located in the capacity Surrounding the track ball for detecting pressure directions.
...
> Status Expired
Sniffnoy 10 hours ago [-]
Do you know until when?
tjoff 8 hours ago [-]
Why does it require two sensors?
mkl 5 hours ago [-]
With only one you can't detect rotation around the axis that goes through the sensor, and for rotation close to that axis the resolution will be very poor.
tjoff 4 hours ago [-]
Okay, sure, but that's a very narrow and specific angle though? Not sure I could deliberately rotate the ball in that direction even of I wanted to.
Especially given the limited use kensington uses rotation for (at least to my knowledge)
4 hours ago [-]
InsideOutSanta 11 hours ago [-]
The Kensington SlimBlade scrolls when you rotate the trackball.
Even the wrist rest, which I've never seen on another trackball, seems to have been copied from here. Anybody tested out both?
They really need to find a better name than "Ploopy" though.
chocochunks 2 hours ago [-]
I had the Expert briefly before returning it and the Ploopy Adept. The Expert doesn't have hardware remappable buttons, only software which IMO makes it no good. It is, IIRC a little bigger. The Adept does have QMK hardware remappable buttons, although mine had a button break and I never got it quite feeling right with the replacement case. I feel like they revised things from my early board and case and they didn't quite match up. I also think scrolling by holding down a button and moving the ball on the Adept is better than the Expert scroll wheel.
Generally I like the feel of Ploopy's trackballs and that are Canadian but I do kinda wish they moved towards offering better non 3D printed cases as an option.
magicalhippo 10 hours ago [-]
> They really need to find a better name than "Ploopy" though.
The name reminded me of Kooky Plops, the fictional band from the brilliant animated skit[1] by David Firth (of Salad Fingers fame) about the state of pop music in 2009.
I bought the regular mouse and had a fun time assembling it. It works fine.
However the "ergonomic" design is extremely uncomfortable for me and caused hand pain. I let it ride for a few weeks hoping I'd get accustomed, the pain got better but didn't go away. Also the far-left and far-right mouse buttons are superfluous and detract from the core experience.
Please do a symmetrical version and maybe throw in a scroll wheel with steps/clicks, I'd happily buy another.
malloryerik 14 hours ago [-]
Instantly couldn't resist clicking on some unknown thing called "the Ploopy A+".
RationPhantoms 2 hours ago [-]
Sounds similar to something from the Ricky and Morty realm; the plumbus.
big_toast 16 hours ago [-]
They have a countdown for the pre-order here[0]. Seems like it's available as a kit Wednesday, August 19th, 2026 at 10am ET to pre-order.
I love all I/O devices..
I think the main difference from the Ploopy Adept is they added two knob buttons?
What is a kit here? A trackball? All the parts needed to assemble a trackball? A populated circuit board, where the rest needs 3D printing? A pile of electronic components that need to be soldered together and the rest needs 3D printing?
For comparison, the regular adept had a PCB and came with printed parts. Some light soldering was involved.
mkl 14 hours ago [-]
Okay, so assembly and soldering required, but all parts included and I don't need a 3D printer. Can do. Weird that they don't mention any of that. The finished item looks like a good trackball.
Karliss 12 hours ago [-]
It's a blog of a niche computer peripheral company not a store listing. And it's not their first product either, only blog is having problems rest of website is still wotking and in the store you can get a pretty good picture of what their typical kits look like. Most likely only sensor, the only through hole component needs soldering. They also ofer fully assembled versions, although initial preorer batch might be kits only .
littlecranky67 8 hours ago [-]
Around the 2000s I remember playing a match of Unreal Tournament Classic on a LAN party again a player of a major german UT clan of the time - he was using a trackball to play and slaughtered us so hard. To this day I can't imagine precise inputs with a trackball, but I saw it is possible.
deadcatfound 16 hours ago [-]
The repairable, open hardware angle is the real sell for me. Nice to see a trackball designed to be kept instead of replaced.
rekabis 15 hours ago [-]
Don’t know what you have been using, but my Kensington Expert Mouse is over 20 years old now, and is still going strong.
twisteriffic 15 hours ago [-]
I've found my Razer Deathadder 2013 and Logitech G5 v2 very easy to repair. I go through a set of switches every 4-5 years it seems, plus cables on the G5.
__s 14 hours ago [-]
Took about a year for my Kensington slimblade to start double clicking. Many others reporting the same
willis936 6 hours ago [-]
Looking at the schematic it seems that this is a wired only solution. I'm quite a fan of wireless trackballs because you can velcro them onto flat sheets and compute from a couch. Has anyone experimented with a wireless USB hub?
hettygreen 9 hours ago [-]
This paragraph is wild to me:
"The original Adept had six buttons. However, ever since we released the original Adept, the PCBs have contained two unpopulated lands for additional switches. Our intention was always to eventually move to eight buttons. The A+ finally lives up to the ambition that we set for ourselves back in 2023."
So they designed it to have 8 switches from the start - but then hid 2 of them so they'd have a "new version" once the sales of the old one slowed down. I don't know if that's genius or sad capitalism...
willis936 6 hours ago [-]
This kind of BOM variant stuff happens all the time so you can buy a bunch of bare boards and sit on them. You don't need to do another expensive board run if firmware development catches up or if you decide you want to depopulate some stuff for a cheaper model or populate more stuff for a more expensive model.
It's difficult to see greed being a motivator from a group that literally releases the source code for everything.
d4rkp4ttern 6 hours ago [-]
I’m wondering if this would replace my trackpad placed between the two splits of my UHK
atmanactive 15 hours ago [-]
Can it detect rotation?
mkl 14 hours ago [-]
Looks like it has just one mouse sensor, so no.
__s 14 hours ago [-]
I have an adept, it does not. Hold button to scroll while turning
arcanemachiner 9 hours ago [-]
Speaking as another owner of the Ploopy Adept, I have found this feature to work very well.
ndsipa_pomu 3 hours ago [-]
I love the Adept trackball - it's got one of the best bearing setups and rolls really smoothly. However, the problem is that all their products are wired and that's awkward for using with a laptop unless you want to constantly move both laptop and trackball to one side when getting up etc.
__mharrison__ 14 hours ago [-]
What size is the ball?
luckydata 14 hours ago [-]
I'm really put off by the poor quality of the 3d printed body
greysonp 12 hours ago [-]
I initially had the same concerns, but while it looks 3D printed, it feels great. I don't mind it at all.
clnhlzmn 13 hours ago [-]
fwiw I just received the adept trackball and I too was worried about the quality of the enclosure but upon seeing it in person I'm fine with it. As far as fdm prints go it's really well done.
wmf 14 hours ago [-]
They should really invest in an SLA printer. Everything on their site looks terrible.
smohare 14 hours ago [-]
I have a number of 3d printed peripherals, including two Ploopy devices. Nothing seems out of the ordinary to me quality wise.
I dig that the Ploopy knob is QMK based, also high resolution. But watching how much effort E.B. has put into my favorite input device of all time, I can't help but want one of theirs.
The internal LED's are cool here. I like the indicator effect, especially with the partial transparency ball. I do wish this was bluetooh and ZMK based. Even though ZMK is lagging a decent bit behind QMK features. Zephyr is just so cool! Wireless is so great. In my opinion.
timothyb89 14 hours ago [-]
I was able to buy one of the Full Scroll Dials, it’s fantastic! I even made a USB adapter for it using a Pi Pico W, which lets it work with a USB switch and fixes macOS compatibility by emulating a Magic Trackpad: https://github.com/timothyb89/bt2usb
dylan604 15 hours ago [-]
I spent my early years in an online tape edit bay. The jog/shuttle wheel has always been something that just seemed like the perfect fit. Even in today's NLE, there are multiple devices trying to fill this need, yet none have the same feel as the old edit controllers
Lammy 12 hours ago [-]
Extremely cute design. I was going to compliment the bold color choices as well as the extremely-'90s jade-on-platinum, but…
> Adept, a unique trackball perfectly suited […] for 3D-printing
> Since the Adept is 3D-printed, your Adept can be as unique as you
I am fine with this in theory but would have no idea what to expect here since I'm not familiar enough with 3D-printing. How robust is this for something I'd be touching every day and would want to take apart and put back together multiple times?
Maybe the intention is to consider it disposable and make a new one if and when it gets fucked up? If I had one I would like to try adding some machine screw anchors, because for something that's going to get that much use I would probably be taking it apart and putting it back together a lot, fiddling with it until I got it perfect so none of the buttons rub up against anything, so there are no squeaks when I press on it or rattles if it gets moved around, etc.
Those are totally my own hangups of course; not trying to FUD the thing and would love to touch one first and see :)
Dual knobs sounds incredibly cool and are something that makes me want to try a trackball again. I loved trackballs in the '90s† when display resolutions were small and it was normal to click and drag a scrollbar thumb, but I haven't used on any machine in the last 15 years because, I dunno, just haven't vibed with the feel of them. My little 75% keyboard‡ already sold me on knobs by having just one.
I have a ploopy thumb scroll and it looks a little bit yucky after 3 years, however it’s a very light gray so if you made it darker it would be fine I think. There’s some hand junk that gets in the layer lines, I’ve reprinted a couple of parts with a thinner layer and darker material and they’re holding up great though.
There are some trade offs but I wouldn’t go back because it fits my larger than average hand so well. Always found the Logitech ones to be too small.
15 hours ago [-]
chrisjj 7 hours ago [-]
"Error establishing a database connection"
paxcoder 13 hours ago [-]
[dead]
pudgywalsh 15 hours ago [-]
Who the hell wants to solder their own trackball? Equivalent products exist at roughly the same price point, fully assembled and tested with a warranty.
vincent-manis 15 hours ago [-]
I would never buy a kit that required soldering, because I'm terrible at it. But I like putting things together. I've assembled a couple of DIY keyboards, and I bought a Framework 12 laptop. It doesn't take too long (Framework estimated 15 minutes, but it was more like 45, because I am slow and methodical), and I like knowing what's inside it. The transition from “box of components” to “working system” always thrills me. And, though the repairability of a trackball is not a big issue, it's nice to know that what you put together can be taken apart, for example, to replace an SSD in a laptop.
Loudergood 14 hours ago [-]
Same.
dgellow 7 hours ago [-]
You’re on Hacker News, lots of us like to solder our own devices and spend time tweaking things. I’m right now waiting for my e-scooter tire to complete its 3d print. It would have been cheaper and way faster to just replace my tubeless tire instead of designing a whole airless tire system, prototype, print, mount everything. But it’s a hobby
breckenedge 15 hours ago [-]
I get it doesn’t appeal to you. Why do you think it shouldn’t appeal to anyone?
pudgywalsh 12 hours ago [-]
Because there is nothing to be learned or gained from it. This isn't a Heath Kit from 1975. Electronics are fully integrated components now. You're paying for an experience. Typically DIY implies a cost-savings.
It's like going to one of those restaurants where you have to cook your own steak at the table and realizing part-way through wtf am I doing?
matherial 8 hours ago [-]
Do you also get upset when people buy Lego sets, model airplanes, or jigsaw puzzles? It's the same thing.
And FWIW, it's the exactly same reason most people were buying DIY electronics kits in '70s, '80s, and '90s.
squigz 10 hours ago [-]
> It's like going to one of those restaurants where you have to cook your own steak at the table and realizing part-way through wtf am I doing?
And yet, people keep going to these restaurants.
Perhaps it's just that people find enjoyment in different ways than you.
https://web.archive.org/web/20260814114201/https://blog.ploo...
The github[0] for it is kinda cool. Uses the 'CERN Open Hardware Licence Version 2 - Strongly Reciprocal'. The assembly instructions[1] give a bit of a hands on feel.
They had some more details on a reddit post[2] it looks like.
[0]:https://github.com/ploopyco/aplus-trackball
[1]:https://github.com/ploopyco/aplus-trackball/blob/main/docs/a...
[2]:https://www.reddit.com/r/ploopy/comments/1vo4y4r/this_is_the...
The easiest approach would probably be to add a second optical sensor and do some math to calculate the twist rate.
https://youtu.be/u1v7TXViRi8
https://en.wikipedia.org/wiki/SpaceOrb_360 as one example.
https://patents.google.com/patent/US20050184962A1/en
> [..] and a plurality of Sensors located in the capacity Surrounding the track ball for detecting pressure directions.
...
> Status Expired
Especially given the limited use kensington uses rotation for (at least to my knowledge)
https://www.kensington.com/p/products/electronic-control-sol...
Even the wrist rest, which I've never seen on another trackball, seems to have been copied from here. Anybody tested out both?
They really need to find a better name than "Ploopy" though.
Generally I like the feel of Ploopy's trackballs and that are Canadian but I do kinda wish they moved towards offering better non 3D printed cases as an option.
The name reminded me of Kooky Plops, the fictional band from the brilliant animated skit[1] by David Firth (of Salad Fingers fame) about the state of pop music in 2009.
[1]: https://www.youtube.com/watch?v=pehHOqx7JXg
They seem to be happy with extra engagement from people who hate the name. https://blog.ploopy.co/yall-need-a-new-name-48
However the "ergonomic" design is extremely uncomfortable for me and caused hand pain. I let it ride for a few weeks hoping I'd get accustomed, the pain got better but didn't go away. Also the far-left and far-right mouse buttons are superfluous and detract from the core experience.
Please do a symmetrical version and maybe throw in a scroll wheel with steps/clicks, I'd happily buy another.
I love all I/O devices..
I think the main difference from the Ploopy Adept is they added two knob buttons?
[0]:https://ploopy.co/aplus-launch-countdown/
What is a kit here? A trackball? All the parts needed to assemble a trackball? A populated circuit board, where the rest needs 3D printing? A pile of electronic components that need to be soldered together and the rest needs 3D printing?
"The original Adept had six buttons. However, ever since we released the original Adept, the PCBs have contained two unpopulated lands for additional switches. Our intention was always to eventually move to eight buttons. The A+ finally lives up to the ambition that we set for ourselves back in 2023."
So they designed it to have 8 switches from the start - but then hid 2 of them so they'd have a "new version" once the sales of the old one slowed down. I don't know if that's genius or sad capitalism...
It's difficult to see greed being a motivator from a group that literally releases the source code for everything.
I dig that the Ploopy knob is QMK based, also high resolution. But watching how much effort E.B. has put into my favorite input device of all time, I can't help but want one of theirs.
The internal LED's are cool here. I like the indicator effect, especially with the partial transparency ball. I do wish this was bluetooh and ZMK based. Even though ZMK is lagging a decent bit behind QMK features. Zephyr is just so cool! Wireless is so great. In my opinion.
> Adept, a unique trackball perfectly suited […] for 3D-printing
I guess this means it could be any color you want? And yeah their store page for the Adept confirms: https://web.archive.org/web/20260720095136/https://ploopy.co...
> Since the Adept is 3D-printed, your Adept can be as unique as you
I am fine with this in theory but would have no idea what to expect here since I'm not familiar enough with 3D-printing. How robust is this for something I'd be touching every day and would want to take apart and put back together multiple times?
The screw wells in the case parts they sell look like the are just plastic and get tapped by self-tapping screws: https://web.archive.org/web/20260720095151/https://ploopy.co...
Maybe the intention is to consider it disposable and make a new one if and when it gets fucked up? If I had one I would like to try adding some machine screw anchors, because for something that's going to get that much use I would probably be taking it apart and putting it back together a lot, fiddling with it until I got it perfect so none of the buttons rub up against anything, so there are no squeaks when I press on it or rattles if it gets moved around, etc.
Those are totally my own hangups of course; not trying to FUD the thing and would love to touch one first and see :)
Dual knobs sounds incredibly cool and are something that makes me want to try a trackball again. I loved trackballs in the '90s† when display resolutions were small and it was normal to click and drag a scrollbar thumb, but I haven't used on any machine in the last 15 years because, I dunno, just haven't vibed with the feel of them. My little 75% keyboard‡ already sold me on knobs by having just one.
† peep my Macintosh Quadra 700 with my favorite Sihlouette ADB trackball https://i.ibb.co/m5qctLzp/Quadra700-Stack.jpg
‡ peep my NuPhy Kick75 High Profile with my favorite Framework Laptop 12 <3 https://i.ibb.co/bjVTfq0m/P1111881-1.jpg
There are some trade offs but I wouldn’t go back because it fits my larger than average hand so well. Always found the Logitech ones to be too small.
It's like going to one of those restaurants where you have to cook your own steak at the table and realizing part-way through wtf am I doing?
And FWIW, it's the exactly same reason most people were buying DIY electronics kits in '70s, '80s, and '90s.
And yet, people keep going to these restaurants.
Perhaps it's just that people find enjoyment in different ways than you.