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ESP32-S3 Remote · ESP32-C3 Dosing Chip

Wireless Remote and Shot-Dosing Kit for La Marzocco Micra

For Micra users who want a smoother daily workflow: square magnetic remote, shot-dosing PCBA, firmware maintenance, and installation support are collected here. Check images, price, stock, and delivery notes before choosing the right accessory for your machine.

Physical Accessories Clear Pricing Email Notices Support Follow-Up
Compatible Machine La Marzocco Micra. Other machine models follow the product-page notes.
Delivery In-stock items ship as soon as possible. Small-parcel coverage is listed at International Shipping.
Firmware The S3 remote and C3 chip use different firmware packages. Read OTA Notes first.
Support Start with Order Lookup to check records, then open Support.

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La Marzocco Knob Controller In Stock
Shipping Fulfillment Stock: 2

La Marzocco Knob Controller In Stock

In-stock knob controller for machines that can be controlled through the official app; firmware maintenance follows product notes.

CNY 600.00 CNY 1500.00
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Micra Fitment

La Marzocco Micra Compatibility and Buying Notes

PCBA Installation Guide

Which machine is supported?

Current products are designed around daily La Marzocco Linea Micra use: square magnetic remote, paddle-signal adapter, Bluetooth scale shot dosing, and OTA firmware maintenance. For non-Micra machines, contact support first to confirm installation space and harness conditions.

How does the PCBA connect?

The shot-dosing PCBA connects to the original Micra paddle signal line through an adapter board, reducing irreversible wiring changes. Before installation, read Micra shot-dosing PCBA non-destructive installation guide and check power-off state, connector orientation, Bluetooth scale mode, and 50-second protection logic.

How is firmware maintained?

The S3 remote has a built-in admin portal and automatic OTA rules. For a designated version, open Micra OTA firmware maintenance or the OTA firmware center. If admin access is unavailable, an update is interrupted, or base firmware must be restored, use browser flashing as a fallback.

User Reviews

Real experiences from users around the world

Maya Chen Singapore / home user / 29 yrs Maya Chen Singapore / home user / 29 yrs

When making the first cup in the morning, I do not want to watch the scale and the phone at the same time. I set the target weight on the small square; after the Bluetooth scale connects, it doses automatically by weight, and the Micra workflow immediately feels smoother.

auto dosing
Li Wei Shanghai / engineer / 34 yrs Li Wei Shanghai / engineer / 34 yrs

What moved me most was not that the screen looks good, but that there is much less switching. Machine status, extraction time, and target weight are all in front of me, so when making coffee my attention finally returns to the puck and flow rate.

less phone switching
Kenji Sato Tokyo / designer / 42 yrs Kenji Sato Tokyo / designer / 42 yrs

At home, the same Bluetooth scale is sometimes used for pour-over and sometimes for espresso. The small square can manually disconnect it or re-enable scanning, so I no longer have to guess who took the scale connection.

Bluetooth scale
Anna Mueller Berlin / studio owner / 37 yrs Anna Mueller Berlin / studio owner / 37 yrs

Backflushing used to rely on memory, and when I got busy I would put it off. Now the entry is available by swiping up on the settings page, and I can also see shot count and rinse count, so maintenance finally no longer feels like last-minute homework.

backflush
Carlos Ruiz Madrid / home user / 45 yrs Carlos Ruiz Madrid / home user / 45 yrs

I do not really like tinkering with firmware, but automatic OTA makes me feel much more at ease. It only prompts when there is an update, and S3 and C3 status are shown separately; that matters when using the device long term.

automatic OTA
Aisha Khan Dubai / coffee trainer / 33 yrs Aisha Khan Dubai / coffee trainer / 33 yrs

During training, what I fear most is the workflow being interrupted by small problems. Target weight, scale connection, and extraction time are all on the screen, so students can more easily understand how a cup of coffee is reproduced.

daily workflow
Joao Silva Lisbon / cafe owner / 39 yrs Joao Silva Lisbon / cafe owner / 39 yrs

When continuously testing beans with friends, the curve and time are useful. It is not to show off data, but to know where the previous cup changed, so the next adjustment has more basis.

shot curve
Claire Dubois Paris / designer / 31 yrs Claire Dubois Paris / designer / 31 yrs

Putting the official firmware check inside the device is very practical. I used to be unable to tell whether it was the espresso machine firmware or the small square firmware; now the entry and prompts are much clearer.

machine firmware
Min-jun Park Seoul / roaster / 28 yrs Min-jun Park Seoul / roaster / 28 yrs

Browser flashing is not used every day, but having it is reassuring. When a customer upgrade is interrupted, a browser plus a Type-C data cable can restore the basic firmware, which makes after-sales communication much less anxious.

browser flash
Priya Mehta Mumbai / home user / 36 yrs Priya Mehta Mumbai / home user / 36 yrs

I like the idea of the admin portal. When the phone and the small square are on the same local network, I can see Wi-Fi, cloud account, machine selection, versions, and diagnostics without asking after-sales support every time.

admin portal
David Miller Seattle / engineer / 52 yrs David Miller Seattle / engineer / 52 yrs

What I care about is the control link. Automatic shot stopping is completed by C3 and the Bluetooth scale, not by waiting for the phone or cloud to respond, which reassures me more than an ordinary remote.

auto dosing
Sofia Rossi Milan / coffee trainer / 41 yrs Sofia Rossi Milan / coffee trainer / 41 yrs

It does not make coffee for me, but it organizes the parts that easily become messy. Shots are watched on the screen, maintenance through the entry, upgrades by version; the whole Micra usage habit feels more complete.

daily workflow
Nozomi Tanaka Osaka / home user / 25 yrs Nozomi Tanaka Osaka / home user / 25 yrs

The small square makes me more willing to do maintenance. Backflushing is no longer something I only do when I remember it, but has a clear entry and prompts just like pulling a shot, making long-term use of the machine more reassuring.

backflush
Thandi Ndlovu Cape Town / cafe owner / 44 yrs Thandi Ndlovu Cape Town / cafe owner / 44 yrs

I like that it is quiet. Sitting beside the Micra, it normally just lets me glance at the status, and only during real extraction does it help watch the time, weight, and connection.

less phone switching
Omar Hassan Cairo / consultant / 38 yrs Omar Hassan Cairo / consultant / 38 yrs

After the Bluetooth scale connection status became visible, troubleshooting involved much less guessing. Whether the scale is occupied by the phone or C3 is not scanning can be judged in a few seconds.

Bluetooth scale
Emma Wilson Sydney / photographer / 30 yrs Emma Wilson Sydney / photographer / 30 yrs

The best thing about automatic updates is that they do not disturb too much. It stays quiet when there is no update and prompts only when there is one; for someone who uses the machine every day, this is more comfortable than frequent pop-ups.

automatic OTA
Miguel Santos Sao Paulo / roaster / 47 yrs Miguel Santos Sao Paulo / roaster / 47 yrs

Automatic dosing by weight is not laziness; it is reducing variables. Beans, grinding, and puck prep are still my responsibility, but after the cup-stopping action becomes stable, comparing flavors becomes much easier.

auto dosing
Hye-jin Kim Busan / coffee trainer / 35 yrs Hye-jin Kim Busan / coffee trainer / 35 yrs

When handing over to new users, backend diagnostics are very helpful. Wi-Fi, cloud, machine binding, and C3 version can all be seen, so problems do not become a guessing game from the start.

admin portal
Julien Moreau Lyon / home user / 50 yrs Julien Moreau Lyon / home user / 50 yrs

It makes the Micra feel more complete. Things that used to be scattered across the machine, scale, phone, and after-sales tools can now mostly be found on one small screen.

daily workflow
Lena Andersen Oslo / engineer / 27 yrs Lena Andersen Oslo / engineer / 27 yrs

When I buy a device, I look at the recovery path. The small square uses OTA normally, and when something is abnormal it can still be flashed through the browser; that rollback feeling makes me willing to use it long term.

browser flash