The display I always wanted for La Marzocco espresso machines (Linea Mini, Micra, GS3). A beautiful little device that adds an analog boiler-temp dial, shot timer, and easy-to-reach controls for all your machines settings (power, steam, pre-brew, backflush). To make your own, you just need a ~$50 device and a USB-C cable. You can then install this firmware directly from your browser.
I built this on a $50
M5Stack Core2
because it's a tidy package, but the firmware isn't married to it. It's
written against M5Unified, so other
boards in that family (Core2 v1.1, CoreS3, Tough) should work with at most a
platformio.ini board swap. If you want to port it to something else
entirely, the actual requirements are:
- ESP32 with WiFi and PSRAM
- A 320×240 touch display that LovyanGFX can drive
- ~2 MB of flash for the firmware
The pre-built web installer image is Core2-only; anything else means building from source (BUILDING.md).
You also need the La Marzocco app account you already have (the email/password you use in the official app, with your machine paired) and a desktop running Chrome or Edge for the web installer.
- Plug the Core2 into your computer over USB-C.
- Open the web installer in Chrome or Edge.
- Click Connect, pick the
USB Single Serial/CP2104port, then Install Strumento. Takes about 90 seconds.
(Want to build it yourself? See BUILDING.md.)
The device will land on the Setup screen. Tap each row and type your WiFi name
- password, then your La Marzocco email + password. Leave the serial blank to auto-discover. Tap Reconnect and you're done — the boiler dial goes live within a few seconds, and pulling the paddle flips to the shot timer.
Credentials are stored on the device and only used to log into your Wifi network and La Marzocco's cloud.
| Machine | Status |
|---|---|
| Linea Mini | Fully tested |
| Linea Mini R | Expected to work |
| Linea Micra | Expected to work |
| GS3 AV | Untested |
| GS3 MP | Untested |
Open an issue with your model if something's off.
MIT — see LICENSE. Not affiliated with or endorsed by La Marzocco S.r.l.