Workshop cameras for 3D printers: local access, storage and privacy

Cloud snapshots versus a live local stream: two different jobs

For Buddy3D, Prusa says snapshots start every 10 seconds and the interval can be set from 10 to 90 seconds. Live video is available in the app or through a network player at a local RTSP address. These pages describe this model, not other cameras.

Choose an interval based on how often you need an image; Prusa gives a 10-to-90-second range but does not measure bandwidth or say whether stills are sufficient to detect a defect. For another brand, ask whether it provides periodic stills, local video or both.

An unencrypted RTSP stream and what it means on your network

Prusa describes Buddy3D’s local RTSP stream as unencrypted, viewable in VLC at rtsp://IP/live, on default port 554, in HD at about 25 fps. Its documentation says the phone and camera must be on the same Wi‑Fi. It does not specify whether authentication controls stream access, so do not infer who can view it from “local network” alone.

Keep the Connect permissions below separate from access control for RTSP: the page does not specify their relationship. When choosing, ask whether the stream requires a login or another authorization, which devices are permitted and which functions depend on internet access. Local RTSP is unavailable in the Connect web interface; Prusa describes WebRTC as a future feature without a date. Do not list browser streaming as available solely because of that announcement.

Where the images go: Prusa Connect, PrusaLink and the MicroSD card

Prusa describes Connect as a cloud service available from anywhere, free for Prusa printer owners with 1 GB of storage for G-codes and telemetry. It says Buddy3D snapshots appear in Connect. The sources do not say whether those images count toward that quota, how long they remain available or where they are retained. PrusaLink, by contrast, is accessible on the local network; that does not describe storage of camera images.

Buddy3D documentation describes time-lapses on MicroSD: FAT32 or exFAT, a recommended maximum capacity of 64 GB, a 5-to-300-second capture interval, manual start and stop in the app, and playback after transferring the card to a computer. Images go into a folder named after the current print job, or a general folder if no job is running. The page describes no cloud upload of these sequences; it does not specify card encryption or retention time, and it does not establish storage for snapshots or competing cameras.

The Connect Data Processing Policy effective October 1, 2026 distinguishes personal or household use from organisational use. In that second context, it assigns the organisation responsibility for the scope and retention of camera recordings made available in the service. That clause gives neither a default retention period for Buddy3D snapshots nor their server location. It should not become an identical retention rule for every household account. Obtain the conditions for your account before assuming a duration.

Subscriptions and free tiers: read the terms before you buy

Buddy3D is one documented example, but Prusa’s pages do not describe other brands’ prices, subscriptions, image retention or terms. For each camera under consideration, check the maker’s current documents for which features are free, where images are stored, how long they are retained and what changes after cancellation. Prusa’s stated free Connect access applies to Prusa owners and the features described by Prusa.

Prusa specifies 5 VDC and 1 A over USB-C for Buddy3D; the page checked on October 20, 2026 names CORE One and HT90 as the only printers that can power it directly. Setup requires the printer to be on, with a QR code generated in Connect or the app after entering the printer Wi-Fi SSID and password. Prusa says an automatic update follows the first internet connection. For any other printer, check exact external power and mounting requirements; the sources do not confirm that a particular adapter or mount is included.

Sharing access without handing over the keys: permission levels

Privacy gets complicated as soon as several people use the same printer: family, coworkers, members of a club. Prusa's documentation describes three permission levels managed through user rights in Connect. A read user only sees the automatic snapshots, refreshed every 10 to 90 seconds, with no control over settings or the live feed. A use user fully controls the camera, starts and stops streams, restarts it and changes settings, but cannot unpair it from the printer. A manage user has everything, including unpairing.

That split is a good model to demand from any camera service: can you give someone a simple viewing right without giving them full control? The page adds that the camera can be renamed, which helps tell several cameras apart across several printers, and that it can be unpaired from the camera details to be paired with another machine. If you are considering a Prusa CORE One, the chassis-mounted version snaps magnetically to the front corners of the frame, and Prusa suggests the left corner for tidier cabling.

What a camera does not promise: catching a failure for you

The supplied documents describe snapshots, local streaming and time-lapse, but do not describe automatic failure detection for Buddy3D. They do not establish the features of other cameras. An image can help you observe a print, but these sources do not guarantee that a particular defect will be visible or trigger an alert.

The page specifies 2.4 GHz Wi-Fi, a 26-character SSID limit, and WEP, WPA or WPA2 network compatibility. Firmware before 3.1.0 does not support hidden SSIDs or special characters in the password; Prusa says to connect such versions to a suitable network for the update. After its first internet connection, the camera updates automatically and checks for updates every 24 hours, according to the page. It attributes choppy streaming to a poor local connection. IR, day/auto and rotation change the display; they do not guarantee a defect will be detected or correctly recognized.

Sources and limits

• Prusa Knowledge Base — Buddy3D Camera
• Prusa Knowledge Base — Prusa Connect and PrusaLink explained
• Prusa Connect — Data Processing Policy, effective October 2026

We organize manufacturer and community documentation; we have not measured these products ourselves. The manual for your exact model takes precedence over general guidance.