Why it is worth attention

It provides a polished, locally focused alternative to Bambu Cloud-based monitoring, with automatic printer discovery, Bambu Studio import, TLS certificate pinning, and separate Local/Keychain builds for access-code storage.

Who it is for

Owners of Bambu Lab 3D printers who want at-a-glance macOS menu bar monitoring
People managing multiple Bambu printers on a local network
macOS users who prefer local-only, no-cloud printer status tools
Developers or tinkerers interested in Swift/MQTT/SSDP printer integrations

Use cases

Monitoring print progress, ETA, layers, and temperatures from the menu bar
Managing a fleet of Bambu printers and reordering printer cards via drag-and-drop
Importing access codes from Bambu Studio to avoid manually entering credentials
Getting HMS errors and notifications while printers run locally

Strengths

MIT-licensed open source and independently built
Supports multiple printers, including compact one-line status mode with four or more printers
Offers automatic local network discovery, SSDP/MQTT parsing, and Bambu Studio import
Provides two storage builds (Local preferences and macOS Keychain) plus TLS certificate pinning

Considerations

Requires macOS 26 or newer, which may limit adoption
Requires printers with LAN access enabled and serial numbers/access codes
Bambu Lab's MQTT protocol is not a stable public API, so firmware changes may require updates
Early community-built release; no mention of iOS/Android or non-macOS support

README quick start

BambuBar

English · Polski

English

A compact, MIT-licensed macOS menu bar monitor for Bambu Lab 3D printers. BambuBar discovers printers on the local network and presents larger fleets in an adaptive two- or three-column macOS-style glass dashboard.

Latest changes

Version 0.1.15 adds TLS certificate pinning and two downloads: Local for convenient preference-based access-code storage, and Keychain for storage in the macOS Keychain.

Read the full changelog

Features

monitors multiple printers from one menu bar popover
supports persistent drag-and-drop printer card reordering
offers a compact one-line status mode when four or more printers are configured
shows print state, progress, ETA, layers and temperatures
displays regular four-slot AMS and single-slot AMS units correctly
preserves empty AMS positions and highlights active or low-filament slots
reports HMS errors and useful printer notifications
reconnects automatically and refreshes printer addresses on the local network
supports Polish and English, light and dark appearance
offers a Local build and a macOS Keychain build
pins each printer's TLS certificate after the first trusted connection
communicates locally without requiring a Bambu Cloud account

Requirements

macOS 26 or newer
a Mac and the printers on the same local network
LAN access enabled on each printer
the serial number and Access Code/PIN for each printer
Swift 6 and Xcode Command Line Tools when building from source

Adding printers

Import from Bambu Studio

If Bambu Studio is installed and already has your printers configured, BambuBar can match printers discovered on the local network with access codes stored in the local Bambu Studio configuration.

Connect the Mac and printers to the same local network and enable LAN access on every printer.
Make sure the printers are configured and visible in Bambu Studio.
Click BL in the menu bar and then +.
Wait for the network scan to finish; it normally takes about 4 seconds and stops after 8 seconds.
Click Import printers and codes. Codes are saved using the storage mode of the installed build.

Installing Bambu Studio alone is not enough: the printers and their access codes must already be present in its local configuration.

Automa

Description

Bambu Lab Printer Status Monitor

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