3D printing and trackballs: the future of gadgets?

Episode Summary

Executive Summary: This episode explores Ploopy, an open-source company making 3D-printed trackballs and other input devices, and how its community-driven model is reviving niche hardware innovation. Through interviews with co-founders Colin and Phil Lamb and community member Chris Person, the show highlights open firmware, moddable designs, Reddit/Discord-led feedback loops, and the broader shift toward customizable, user-built peripherals.

Main Topics: Ploopy’s origin and philosophy (Priority: 5/5): Colin and Phil Lamb explain that Ploopy began as a project to preserve beloved peripherals by making them open source, customizable, and always reproducible without proprietary tooling or expensive manufacturing. Trackballs as a forgotten but persistent niche (Priority: 5/5): The episode frames trackballs as a once-more-common input method that has been neglected by major manufacturers, leaving room for enthusiasts to revive and reinvent the category. Open-source design and community modding (Priority: 5/5): Ploopy’s products are deliberately designed so users can 3D print, modify, and improve them, with community members regularly submitting redesigns, firmware changes, and hardware tweaks. Reddit and Discord as product development engines (Priority: 4/5): Rather than relying on traditional market research, Ploopy and its users develop ideas in public on Reddit and Discord, where feedback, experiments, and iterative improvements happen quickly. Technical complexity of 3D-printed peripherals (Priority: 4/5): The creators discuss how trackballs are harder to design than keyboards because of precision mechanics, sensors, bearings, and fit tolerances, making iterative prototyping essential. Broader hardware democratization (Priority: 4/5): Chris Person broadens the discussion to how cheaper parts, PCB ordering, and outsourced 3D printing have lowered barriers to making custom peripherals and open-source electronics. The future of personalized input devices (Priority: 3/5): The episode suggests that open-source hardware communities may continue expanding into new categories like headphones and other peripherals, potentially influencing larger brands.

Key Arguments: Open sourcing hardware ensures products can remain available even if the company stops making them, reducing dependence on proprietary supply chains and molds. Trackballs and other input devices have strong enthusiast communities despite being ignored by mainstream manufacturers, proving there is demand for niche innovation. Community feedback is not just useful but central to Ploopy’s development; users actively shape product direction by requesting features and submitting mods. A product like the Ploopy Nano can succeed precisely because it solves a specific enthusiast use case—compact, minimal input for split-keyboard users—despite lacking buttons. Reddit and Discord can function as real product labs, where public iteration reveals what users want before formal market research would. 3D printing and PCB manufacturing are now accessible enough that hobbyists can build and customize sophisticated hardware at relatively low cost. Open-source firmware ecosystems such as QMK make it easier to adapt input devices and unlock advanced remapping, macros, and layers without installing proprietary software. Large manufacturers are unlikely to be threatened by small open-source players, but open hardware can still expand the market and force more innovation.

Data Points: Ploopy classic ball size: 1.75 inches - Colin says the standard trackball shipped with the Classic is 1.75 inches. Alternative ball size: 1.818 inches - A user redesigned the top shell to fit a Microsoft Trackball Explorer ball. Ploopy Nano price: $40 Canadian / $45 - Chris describes the Nano as inexpensive for a custom open-source trackball. Trackballs shipped vs Logitech: Ploopy ships in a year what Logitech ships in about 5 minutes - Colin and Phil emphasize how small Ploopy is relative to major manufacturers. Approximate scale comparison: 25 minutes corrected to 5 minutes - The speakers jokingly revise the estimate to show Logitech’s massive scale. PCB batch cost: 5 boards for $30 - Chris explains how affordable it is to order assembled or semi-assembled PCBs. Reddit community size example: Mechanical keyboard subreddit grew from a few thousand to over 1 million - Chris uses this to argue that niche hobby communities can become much larger than expected. Headsphones project timeline: Over 2 years - Ploopy spent over two years focused primarily on trackballs and input devices before broader expansion. LinkedIn ads promo credit: $250 spend for a free $250 credit - Sponsor read; not part of the discussion topic but present in transcript.

Pivotal Quotes: "This thing is always going to be available. This thing is always going, it's always going to be possible to make this thing." — Colin Lamb: Explaining why Ploopy open sources its designs to preserve availability and avoid hardware disappearance. "The community is driving the company as much as them." — Alex Kranz: Summarizing the relationship between Ploopy’s founders and the user community after hearing how public feedback shapes products. "There's a lot of joy that has been taken out of using the computer." — Chris Person: Describing why DIY and moddable peripherals matter to enthusiasts who want more personal and enjoyable computing experiences.

Implications: The episode suggests a growing future for open-source, community-led hardware. As 3D printing, PCB services, and firmware ecosystems improve, more niche users may build and share their own peripherals, pushing larger brands to offer more customization.