How to make a vacuum cleaner Xiomi: myths, reality and DIY-modernization

Many Xiaomi enthusiasts and enthusiasts are wondering if it is possible to recreate the legendary robot vacuum cleaner at home at minimal cost. It is worth noting that it is impossible to build a full-fledged Roborock or Dreame from scratch from improvised materials, since key components such as lidar and complex navigation algorithms are proprietary. However, this does not mean that the topic is devoid of meaning for those who want to save money or dive deep into engineering creativity.

In this article, we’ll explore why making a copy of the Xiaomi brand is a technically challenging task that only a few roboticists can do. Instead of trying to build a device out of garbage, we’ll look at real ways to upgrade existing models and build homemade accessories that really work, and this approach will save you money and have a unique experience.

Xiomi's modern smart home devices are a complex set of sensors, motors and software. Simply connecting a motor to a turbine will not produce the suction effect and, most importantly, the intelligence that original products are famous for, so the answer to the question "how to do" shifts to "how to improve" or "how to build a smart control system."

Why you can’t build a Xiaomi analogue from scratch

The first thing anyone who tries to recreate a robot vacuum cleaner on their own faces is the complexity of navigation systems. The original models use LiDAR LDS or visual cameras to map a room in real time. Reproducing this kind of mapping accuracy in garage environments is almost impossible without access to closed APIs and sensor specifications.

The second barrier is software: the Mi Home ecosystem requires strict authorization and certification of devices; a homemade gadget simply cannot connect to the company’s servers to manage from a smartphone without the most complex manipulations of firmware and emulation of communication protocols, which makes it economically and technically impractical to create a fully autonomous “flagship killer”.

But enthusiasts are finding workarounds using open platforms, and instead of copying design, they're focusing on functionality, using the available components to build basic cleaners, but it's worth noting that the intelligence of such a device will be well below the factory's.

⚠️ Warning: Attempts to self-manufacture a lithium-ion vacuum cleaner battery pack without the appropriate experience and equipment can result in a fire or explosion.

And the aerodynamics of the body are critical: Xiaomi engineers have been optimizing airflows inside the compact body for years to achieve high suction forces at low noise levels, and repeating this geometry without wind tunnels and simulation software is extremely difficult.

DIY-project: Creating a smart base for a vacuum cleaner

If you're a hard-to-build vacuum cleaner, it's a real challenge for a home builder to build a smart habitat, and you can make an automatic charging base or a self-cleaning container using an Arduino or ESP32 controller, which will add features that even expensive models don't have.

To do this, you'll need a set of components that are readily available in electronics stores, and the focus is on automating the docking and maintenance process, and it's a great way to build your microcontroller skills.

Below is a list of the necessary details for the project to start:

• 🔌 Controller ESP32 Arduino Nano for Logic Management.
• ⚙️ Servo actuators for mechanical opening of dust collector valves.
• 📡 IR receiver module for emulating remote or base sensor signals.
• 🔋 Power supply with suitable voltage for charging the device.

The assembly process starts with the design of the base case. 3D-You can print or cut parts out of durable plastic, and the key is to keep the dust suction system tight if you're planning on making a self-cleaning station.

It's important to set the logic right, for example, if you can program the base to turn on a powerful fan to clean the filter only after the robot is charging, this requires precise synchronization of the signals.

Upgrades to older Xiaomi and Roborock models

Owners of devices of the past, such as the Xiaomi Vacuum 1S or early Roborock models, often face a lack of features. Fortunately, many of these devices are amenable to upgrades. The most popular way is to install alternative firmware, such as Valetudo.

Valetudo’s firmware allows you to completely untie the vacuum cleaner from Xiaomi’s cloud servers and manage it locally through Home Assistant, not only increasing data security, but also opening up access to advanced settings not available in the standard Mi Home app.

But the firmware process requires caution, and you'll need to take the device apart, find the UART contacts on the board, and connect the USB-TTL adapter, which is the level of advanced repair and modification.

In addition to software, you can also improve hardware, and installing a more capacious battery or replacing the side brush with a reinforced one will significantly extend the life of the device, and some craftsmen even change standard wheels to analogues with better grip for carpets.

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Before starting any work with the electronics of the vacuum cleaner, be sure to turn off the battery. A short circuit can disable the motherboard, the restoration of which will cost more than a new device.

Remember that any self-modification of the firmware or design will void the warranty. If the device is still warranty, it is better to refrain from deep interference.

Creating homemade accessories and consumables

One of the most practical ways to "do" something for your Xiaomi vacuum cleaner is to produce consumables.Original filters HEPA And side brushes cost money, and their analogues printed on the 3D-Printer or sewn with your own hands, can be cheaper and better.

To make a side brush, you'll need a strong plastic for the base and a stubble of the right stiffness. It's important to balance, otherwise the brush engine will quickly fail due to vibration. 3D-Prints can often be found on open sources.

Fine cleaning filters can be made from flieselin or special fabric for car dealerships, cutting them according to the pattern of the original, the main thing is to ensure that the edges are tightly fit so that the dust does not bypass the filtration.

• 🧵 Use a needle-piercing material for the base of homemade filters.
• ⚖️ Always check the balance of homemade rotating parts.
• 🛡️ Make sure the materials are able to withstand the engine temperature.
• 📏 Observe the exact dimensions of the original parts up to a millimeter.

Restrictive tapes are also popular, and instead of buying expensive magnetic tapes, you can use Arduino-based infrared barriers that will virtually limit the cleaning area.

⚠️ Attention: Using unoriginal low-throughput filters can cause the engine to overheat and burn. Test new materials for airflow resistance.

Homemade accessories are a great way to be creative, like printing a coat picker that's more efficient than standard, or creating a wet cloth holder with an improved water supply system.

Integration into the Smart Home System

The real magic begins when you integrate your vacuum cleaner (or its homemade counterpart) into a single ecosystem, and even if you couldn't build a robot from scratch, you can make it part of a smart home through platforms like Home Assistant.

This often requires you to raise your local server and use the miio or Xiaomi Gateway integrations, which allows you to create complex scenarios, such as running a cleanup when a smartwatch detects you have left home.

Setting up automation scenarios opens up new horizons: You can program the light indicator on the router to flash when the vacuum cleaner is stuck, or send a notification to Telegram with a photo of the obstacle if the model has a camera.

Example of a simple command for Home Assistant (YAML)


service: vacuum.send_command




entity_id: vacuum.xiaomi_vacuum




command: app_start

Working with the Xiaomi API requires care, and you'll need to get a device token, which is sometimes a separate quest, but the result is worth it: you get full control of the device without the constraints of regional servers.

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Local management via Home Assistant eliminates reliance on the Internet and the manufacturer’s servers, making your smart home truly yours.

In addition, integration allows you to combine the vacuum cleaner with other sensors, for example, if the water leak sensor is triggered, the robot vacuum cleaner can be sent to another room to avoid interference or, conversely, to come to the place to collect water (if the design allows).

Common mistakes in self-assembly

When trying to save money or experiment, users often make fatal mistakes, one of the most common is ignoring power requirements, and using cheap power supplies without stabilizing voltage kills vacuum cleaner electronics the fastest.

Another mistake is the cyclone module is not properly assembled, so if you break the tightness of the joints or use a too rough filter at the inlet, the suction force will drop significantly, and fine dust will settle on the motor, disabling it.

Often, enthusiasts forget the software part. Even a perfectly assembled iron vacuum cleaner is useless without algorithms that make it skirt around obstacles. Trying to do this on your knee usually leads to a device that just randomly drives dirt around the room.

• ❌ Ignoring the balancing of rotating elements.
• ❌ Use of insufficiently cross-sectional wires.
• ❌ Lack of protection against overheating in homemade bases.
• ❌ Trying to use old Li-Ion batteries without BMS.

And the sensor error is worth mentioning: taped down drop sensors to fight black carpets is a bad idea. A robot can fall off a staircase or a couch, causing severe mechanical damage to the body.

⚠️ Warning: Never leave homemade lithium battery devices unattended for the first cycles of operation. The risk of heat dispersal in artisanal assemblies is much higher.

Remember, safety should always be a priority over saving, and if you're not confident in soldering or programming, you'd better buy a finished device or consult a professional.

FAQ: Frequently Asked Questions