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Reviews & Guides · Kitchen & Dining

Modified gagg3028a: pressure profiles, with Gaggiuino and Gaggia Classic E24 context

My modified Gaggia gagg3028a lets me try different pressure curves. Learning what changes in the cup—and finally pulling a successful shot—is the fun part.

The modified coffee machine beneath a tablet displaying extraction data.
A V3 Studio extraction-history chart with Chinese measurement labels.
The machine’s added screen displaying an extraction curve.
Another curve on the Gaggiuino-marked display.
A cup of latte art from the owner’s coffee routine.
Black coffee in a cup.
Latte art in a decorated cup.

More possibilities in each extraction

I’ve used the gagg3028a for a while now. Here’s how having a machine with variable pressure has changed things for me.

First, I have many more possibilities. Extraction is no longer fixed at 24 seconds and 36 g in the cup. I can try high-pressure slow extractions, lever-style profiles, iuiu, Super Extraction 2.0 and all kinds of other curves. There’s so much variety.

Second, as I gradually understand the curves and learn to adjust them, my understanding of coffee deepens too.

Finally, in Sange’s group I’ve met knowledgeable people and made friends with similar interests. What a pleasure. Watching a curve change little by little and finally pulling a successful shot is immensely satisfying.

Source: zl8018 · Xiaohongshu · 18 April 2026 · 我的咖啡小记0，V3哥gagg改变我的咖啡生活. Search this Chinese title in Xiaohongshu to find the original post.

Before You Buy

Models in your region

The owner calls the machine “gagg3028a.” Its photos show Gaggiuino and V3 Studio markings and an added control display. The precise base-machine generation and installed hardware are not established.

Model in this review Related reference or regional option What to know
Modified gagg3028a setup Gaggiuino project (international reference) A third-party Gaggia Classic control project. The photographed configuration is not established as an official project build or supported product.
Modified gagg3028a setup Classic E24 regional versions (US and Europe) A related factory Classic-family reference, not an equivalent to the modified pressure-profiling setup. Buying an unmodified E24 does not provide the displayed software and curves.
Model in this review
Modified gagg3028a setup
Related reference or regional option
Gaggiuino project (international reference)
What to know
A third-party Gaggia Classic control project. The photographed configuration is not established as an official project build or supported product.
Model in this review
Modified gagg3028a setup
Related reference or regional option
Classic E24 regional versions (US and Europe)
What to know
A related factory Classic-family reference, not an equivalent to the modified pressure-profiling setup. Buying an unmodified E24 does not provide the displayed software and curves.

Choosing for everyday use

The owner’s modified gagg3028a has an added control system for adjusting extraction. The factory Classic E24 regional versions in the US and Europe do not include that modified setup; match each version’s rating label to the local supply. The owner values experimenting and learning, rather than reporting a timed saving or a blind taste-test result.

The Gaggiuino project’s own repository describes a microcontroller-based Gaggia Classic control project and links its documentation and support community. That establishes what the project is; it does not authenticate the build shown in the owner’s photographs.

Before considering a similar modified machine, obtain its base model, controller and firmware version, installed sensors and support contact. The displayed graph labels distinguish pressure, pump flow and mass-flow rate; those are different quantities. A curve screenshot alone does not establish that another machine will reproduce a recipe or taste.

Choose this kind of setup if the adjustment process itself appeals to you. The owner’s strongest endorsement is enjoyment of learning and community, not a claim that everyone needs variable pressure to make good coffee.

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