How to Clean the Sensors of the Xiaomi Vacuum Cleaner 1S

Xiaomi Mi Robot Vacuum 1S vacuum cleaners have proven to be reliable cleaners, but even the most advanced technology requires regular maintenance. Owners often face a situation where the robot begins to behave strangely: crashes into obstacles, can not find a base to charge or gives voice messages about a sensor error. Optical sensors contamination is one of the most common causes of failures in the navigation system of the device. Dust, pet hair and small debris inevitably settle on sensitive elements of the case, preventing correct scanning of the space.

Ignoring the need to clean can cause a smart gadget to stop building a map of the room or be constantly lost in a familiar room. It is important to understand that the Xiaomi Vacuum 1S uses a complex laser navigation system (LDS) and many auxiliary optical sensors for orientation. When these "eyes" of the device are closed with a layer of dust, the algorithms begin to work incorrectly. Regular and proper cleaning can extend the life of the device and return it to its former efficiency without going to the service center.

In this article, we will go into detail where key sensors are located, how to wipe them and how to avoid typical maintenance errors. Pollution prevention takes only a few minutes, but saves hours on eliminating the consequences of malfunctioning the robot. Let's take a closer look at the Mi Robot Vacuum 1S device to understand where to focus attention when cleaning.

Location and types of sensors in Xiaomi Vacuum 1S

To clean effectively, you need to have a clear understanding of the sensor architecture of your robot vacuum cleaner. Xiaomi Vacuum 1S has a primary laser rangefinder (LDS) that sits in a characteristic circular elevation on the top of the housing. It's this node that scans the room and builds a map, but there are other equally important elements around it and on the bottom of the housing. Optical sensors are responsible for detecting elevation differences, such as steps or rapids, so that the device does not fall off the stairs.

On the bottom panel (bottom) of the robot is a scattering of various windows and holes. This is where collision sensors, wheel encoders and carpet detection sensors are located. Particular attention should be paid to the charging contacts area and the sensor that helps the robot to position itself on the base. If these elements are contaminated, the Xiaomi 1S may simply not see the base even when in close proximity to it. Often users forget about the side sensors that help the device move along the walls.

⚠️ Warning: Never use sharp objects such as needles or scissors to pick up dirt in sensor holes.You may damage the protective glass or internal optics, resulting in irreversible breakage.

Understanding which sensor is responsible for what helps diagnose the problem more quickly, for example, if a robot constantly falls off carpets or rapids, the lower elevation sensors are likely to be contaminated, and if it is randomly rushing around the room, the problem may be in the upper laser unit or side sensors.

Necessary tools for maintenance

Before you start cleaning, you need to prepare the right tools. Using the wrong materials can lead to scratches on the lenses or static electricity, which will attract dust even more. To safely maintain the Xiaomi Vacuum 1S, you will need a minimum set of items that will be found in any home.

The main tool will be a dry, soft fabric made of microfiber, which perfectly collects dust without leaving villi and smudges. Unlike paper wipes, microfiber does not scratch plastic and optics. Cotton swabs are great for hard-to-reach places and sensor holes. They allow you to spot the contaminants without smearing them on the surface.

• 🧹 Dry soft fabric made of microfiber - the main tool for cleaning the case and large lenses.
• 👂 Cotton swabs - necessary for cleaning narrow slots and holes of side sensors.
• 🌬️ A purge pear (or a can of compressed air) – helps blow fine dust from the depths of sensors without physical contact.
• 💧 Distilled water (optional) – only in case of severe contaminants, the fabric should be only slightly moist.

The use of aggressive chemicals, alcohol or solvents is strongly discouraged: these substances can cloud the plastic, make it brittle or damage special coatings on optical elements. Material safety is the key to the long life of your vacuum cleaner. If you use wet fabric, make sure that it is well pressed so that water droplets do not get inside the case.

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Use new cotton swabs for each sensor so you don’t transfer greasy dust from one place to another.

Step-by-step: cleaning the lower sensors

The bottom of the robot vacuum cleaner gets polluted the fastest because it is in direct contact with the floor. To access the sensors, the device must be flipped. Before you do that, be sure to turn off the Xiaomi Vacuum 1S to avoid accidentally starting the motors or activating the sensors during the procedure. Put the robot on a soft surface, such as a towel, so as not to scratch the top cover.

First of all, you should look at the big circular window in the middle of the bottom, which is the elevation sensor, which is the elevation sensor that keeps the robot from falling down the stairs, and there are additional sensors and wheel modules around it, and you should carefully wipe all the black windows with dry cloth. If you see the plaque, use a slightly damp microfiber, but immediately walk through the dry cloth. Pay special attention to the front rotary wheel area, because the hair that winds there can block the sensors.

Don't forget to clean the charging contacts, which are also at the bottom.Oxidation or a layer of dust on them can prevent normal charging, and the robot will think the battery is not charging, although the problem is in contact.Wash the metal plates with dry cloth until shine. After cleaning, let the device lie down for a couple of minutes to make sure there is no moisture at all before turning it on.

⚠️ Warning: When cleaning the bottom panel, make sure that dust and debris from sensor holes do not get inside the housing.

Maintenance of laser rangefinder (LDS) and upper sensors

The top LDS (Laser Distance Sensor) unit is the navigation brain of the Xiaomi Vacuum 1S. Inside the rotating tower is a laser and receiver. Although protected by a plastic dome, dust accumulates over time on the surface and in the laser exit slots, which can lead to blind spots on the map or errors in the construction of the route.

Wipe the outer plastic dome with a dry soft cloth in circular motions. Don't push too hard to displace the rotational mechanism. There's a small window on the side of the turret, which is the output of the laser. It needs to be wiped especially carefully using a cotton swab. If you see dust inside a transparent dome, try to gently blow the slits with compressed air, but don't disassemble the unit unnecesarily.

The 1S also has bumper sensors and IR receivers to communicate with the base, which are located in the front of the device. Rub the front hemisphere of the body regularly. If these sensors are contaminated, the robot may not correctly assess the impact force on furniture or not see virtual walls if you use magnetic tape (although the 1S relies more on a map).

Any impacts on the top of the robot can knock the calibration. After cleaning the top sensors, start building the map again so that the system updates its environment with clean sensors.

Table: Location of sensors and symptoms of their contamination

To quickly diagnose navigation problems, a pivot table can be used to link the robot's strange behavior to a particular contaminated node, saving time to find a fault and allowing spot cleaning.

Use this table as a cheat sheet when the first signs of unstable operation appear. Regularly checking these zones will avoid serious failures in the navigation algorithms. Xiaomi Vacuum 1S is very sensitive to the purity of its eyes, and keeping them in order is the key to stable operation.

Frequent cleaning errors and how to avoid them

In an effort to help their gadget, users sometimes make mistakes that can do more harm than the dust itself. One of the most common mistakes is using wet wipes for electronics containing alcohol or fragrances. The remaining chemical film on the lenses can attract dust even faster or cause plastic to cloud over time.

Another mistake is ignoring the inside of the wheel arches, which often accumulates tangles of wool that can mechanically overlap sensors or interfere with the rotation of the wheels, which the system perceives as a sensor error, and you should not try to disassemble the laser module if you do not have the appropriate skills, and breaking the factory seal or calibrating the laser will make navigation impossible.

⚠️ Warning: Don’t try to oil sensors or machinery. The lubricant will collect all the dust in the house and turn into an abrasive mass that will knock out the equipment.

Try to do a preventive cleaning at least once every two weeks, and if you have molting pets every week, regularity is more important than intensity, it's better to wipe the sensors quickly than to spend hours dealing with map errors and stuckness.

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Regular dry cleaning of sensors every 1-2 weeks prevents 90% of problems with navigation and search of the base.

FAQ: Frequently Asked Questions