How to Shorten Xiaomi Cornage: The Complete Guide

Smart home is becoming the standard of comfort, and automation of curtains is one of the most popular scenarios. However, when buying a smart eaves Xiaomi or Aqara users often face the problem: the standard length of the track exceeds the size of the window opening.

The process of resizing requires precision and understanding of the mechanism. An electric carnival is a complex device where the motor, belt and sensors work together. Incorrect pruning can disrupt synchronization or damage the internal wiring, so it is important to strictly follow the sequence of actions described in this article.

In this article, we'll take you through all the steps from removing the plugs to final calibration through the Mi Home app, and you'll learn what tools you'll need, how to avoid damaging the current tracks, and what to do if the curtains stop opening completely after trimming, and being ready to work is key to a successful installation.

Tools and workplace preparation required

Before you start physically affecting an aluminum profile, you need to build the right tools. Metal and electronics require precision, so using inappropriate items like kitchen scissors or blunt saws is not acceptable. You need a sharp hacksaw on metal with a small tooth that will ensure a smooth cut without barbs.

Also prepare a set of screwdrivers, a roulette and a marker for marking. Important: make sure the work surface is stable and well lit. Falling a long track can damage plastic elements or bend the aluminum body, making it impossible to build further.

Use gloves to protect your hands, as the edges of the aluminum profile can be sharp after cutting. If you are working with the Xiaomi Smart Curtain Companion, check if all components are in the box to avoid missing parts during the installation process.

• 🛠️ Metal knife with a small tooth or a high-quality tube cutter for aluminum
• 📏 Roulette and building marker for accurate marking of cutting line
• 🔧 A set of screwdrivers (cross and flat) for dismantling plugs
• 🧤 Safety gloves and glasses for safety when working with metal shavings

⚠️ Attention: It is strictly forbidden to use a Bulgarian with abrasive circles. High speed of rotation and heating can melt plastic guides inside the profile or damage the insulation of wires running along the track.

Accurate calculation of the length and marking of the track

The most critical step is to determine how much to cut, and a few millimeters of error can cause the cornice to stay between the slopes, or to leave too much gap, and first measure the distance between the walls or mounts where the system will be mounted.

When calculating, consider the length of the motor itself and the end plugs. The working length of the track is the distance between the inner edges of the mounts, not the total length of the structure. If you cut too much, you have nowhere to put the motor, and if not enough, the cornice simply does not fit into the niche.

Use the formula: Cut length = Total track length - (Installation distance - Motor width - Bar width) It is better to cut less and then finish than cut off the excess immediately. Aluminum is the material forgiving, but only until the moment of cutting.

Make sure you apply the markings clearly and brightly. Make a line around the perimeter of the profile so that you don't go sideways when you file, and the cut curve will make it difficult to install the plug and can disrupt the sealability or aesthetics of the product.

The process of dismantling and trimming of aluminum profile

Start by taking the side stubs off neatly. In Aqara Curtain Driver models and analogs, they can be held on latches or screws. Act without fanaticism: plastic is fragile, and a broken plug will spoil the appearance of even a perfectly working mechanism.

Once you remove the end elements, you'll see the internal profile structure, and there are runner grooves and, in some models, wire channels, and you'll see a safe area for cutting, and usually the manufacturer will mark the places where you can saw, or leave a smooth area at the edge without internal partitions.

Drill slowly, without much pressure. The movements should be reciprocal. If you feel resistance, check if you have hit the inner lintel. Once the cut is complete, be sure to treat the edges with file or sandpaper to remove sharp burrs that may hurt your hands or damage your curtains.

⚠️ Warning: Thin power wires or sensors may pass inside the track (depending on the model). Before a sharp one, carefully examine the section - if you see copper veins, you can not saw in this place, you need to shift the cutting line or choose the other side of the track.

Features of working with the electric part and motor

Many users are afraid to touch the electric, but in the case of Xiaomi eaves, everything is quite modular. The motor is usually attached separately and inserted into the track. When shortening the track, the length of the belt or cable usually does not change, as they are designed with a margin or have a tension mechanism.

However, if you have significantly shortened the track (more than 20-30 cm), you may need to adjust the tension of the drive belt. In some models, the belt is fixed in length, and if it is severely shortened, it can sag, which will lead to slipping of the gears of the motor.

If your model involves trimming current tracks (rarely, but found in specific modifications), you will need a soldering iron and electronics skills. In standard household models Xiaomi Mijia contacts are usually located in the end part, which is not trimmable, or the connection is through connectors that are not affected by the file profile.

After trimming the profile, assemble the structure in reverse order, make sure the motor sits tightly in the seat and the gears correctly engage with the belt, and the thrust or skewed motor will lead to noisy operation and rapid wear.

Installation of plugs and final assembly

After successfully pruning and stripping the edges, it's time to install end plugs, which not only serve a decorative function by hiding a slice of aluminum, but also lock the runners inside the track, preventing them from popping out. Put the plug tightly, until the characteristic click or stop.

If the plug doesn't come in, don't hammer it. Check if there are any burrs left behind that interfere with the installation. If necessary, slightly sharpen the inner edge of the plug or the edge of the profile. The tightness of the joint is important for durability, especially if the cornice is installed in a room with high humidity.

Now you can insert curtain runners, spread them evenly over the entire length of the track, make sure they move freely along the entire length, including the section just cut. There should be no jamming.

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Lubricate the inside of the track and the runner with dry silicone lubrication before installing the curtains, which will significantly reduce the noise level when the engine is running and prolong the life of plastic parts.

Calibration and configuration in the Mi Home app

The physical installation is complete, but the smart cornice needs to "understand" its new dimensions. Connect the device to the network and open the Mi Home (or Aqara Home) app. Find your cornice in the list of devices and go to settings.

You'll need to start calibration. It's usually called Calibration, Setting Range, or Length Adjustment. The carnise will automatically drive from edge to edge, remember the endpoints, and set the limits of movement. This is a critical step: without it, the motor can try to move beyond the physical end of the track and break the mechanism.

When calibrating, make sure that nothing is interfering with the curtains, the app will show you progress and report success or error. If the calibration is successful, check manually and through voice commands.

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Calibration after pruning is mandatory! Without resetting and re-tuning the boundaries of movement, a smart cornice can damage the mechanism or incorrectly close the curtains.

If the cornice is jerking or making strange sounds, repeat the calibration. Sometimes it takes several attempts for the electronics to correctly count the position of the runners on the new track length.

Frequently Asked Questions (FAQ)