Watchtower's cloud-free print farm dashboard claims 50-100 printers per Raspberry Pi ahead of Kickstarter launch

3D Sentinel has opened a waiting list ahead of a Kickstarter campaign for Watchtower, a locally hosted dashboard for managing 3D printer farms across Bambu Lab, Klipper, PrusaLink, and OctoPrint ecosystems. The software runs on Windows, macOS, or a Raspberry Pi, auto-detects networked printers without plugins or firmware changes, and the vendor claims a single Pi can handle 50 to 100 printers versus one to five per hub for competing tools. Features include slicer-integrated job queuing from Bambu Studio, OrcaSlicer, and PrusaSlicer, automatic slot assignment for multi-color and tool-changer systems, filament inventory tracking, smart-plug power monitoring, a unified error feed, and support for over 40 simultaneous camera streams. Pricing and a launch date are unset; the company plans a limited run of one-time lifetime licenses instead of subscriptions.

The pitch targets a real cost pain point for farm operators paying recurring fees for cloud fleet managers, and local-only operation with an optional encrypted tunnel fits a broader shift toward on-premises control in AM software tooling. Watchtower sits in the software-and-service layer rather than hardware, competing on fleet density and cross-brand compatibility rather than print quality. The claimed 50-to-100-printer-per-Pi figure and 40-stream camera capacity remain unverified by independent testing, and with no price or ship date confirmed, this is a pre-launch signal rather than a proven product. Farm operators evaluating it should wait for third-party benchmarks before committing production infrastructure.