News SWDK ZDG300 Wiping Robot: Xiaomi’s First Square Model
On Xiaomi’s sales and crowdfunding platform “Xiaomiyoupin” fanboys of the Chinese tech giant can hardly get enough. A very high percentage of new products from the “Apple China” sphere end up there first, before they can be found in the China shops. A visit to the site let us find Xiaomi’s first pure wiping robot “ZDG300”, which also has a very practical shape. All info here.
- Xiaomi SWDK Wiping Robot
- at Xiaomiyoupin (Crowdfunding for 1299 yuan)
Technical data: Comparison with Mi Robot 1S
As a pure wiping robot, the comparison to a vacuum robot is of course somewhat difficult. However, so that you can put some data in relation, we compare the ZDG300 with the Mi Robot 1S.
|SWDK ZDG300||Mi Robot 1S|
|Navigation||Camera navigation with gyro sensor (VSLAM)||Laser space measurement|
|App||Xiaomi Home (Android, iOS)||Xiaomi Home (Android, iOS)|
|Noise level||71 dB||50-65 dB (depending on suction level)|
|Battery||n. a.||5200 mAh|
|Water tank||0.24 l||no wiping function|
|Working time||2 h||2.5 h|
|Weight||n. a.||3,8 kg|
|Dimensions||32.0 x 32.0 x 8.0 cm||34.5 x 34.5 x 9.6 cm|
|Inclines||n. a.||15°, up to 2 cm|
The first of its kind and form
From the Chinese manufacturer SWDK we know so far only a hand vacuum cleaner, from Xiaomi generally only the vacuum robots. Now the first pure wiping robot from Xiaomi. The design has the typical Xiaomi look, but the shape is completely different than usual. The ZDG300 from Xiaomi’s subsidiary is square and therefore also gets very well into corners. Whether Roborock is responsible for the production here, as with the other household robots, is still unclear.
On the underside of the robot there are two wiping mops with coated microfiber cloths that move up and down and vibrate. The manufacturer wants to compensate for the muscle power that is used when wiping manually with a mop and bring enough pressure to the floor. So that even harder stains can be wiped off.
The movable vibration water tanks operate at 800 revolutions per minute. With concern I think about whether this really creates an operating volume of 71 dB … We humans talk at an average volume of 60 dB. 71 dB (if this applies in practice) are correspondingly very loud.
Navigation and operation of the ZDG300
Those who know the Xiaomi vacuum robots will have noticed in a moment: There is no LDS (laser distance sensor) on the upper side of the 8.0 cm flat wiping robot. Accordingly, the premises are not scanned by laser. The ZDG300 (is this really the final name?) navigates via camera (without optical images) and gyro sensor. When using a gyro sensor, the vacuum robot measures the rotary movements from the charging station.
Inside the robot, a VSLAM graphics algorithm (VSLAM = Visual Simultaneous Localization and Mapping) works, which enables the ZDG300 to store the obstacles detected during the journey on a map. The position is determined simultaneously and the map is created. The map can then be called up in the app. Further obstacle and fall sensors protect the wiping robot from collisions with pieces of furniture or falls from the stairs.
Navigation via gyro sensor currently occupies second place in the ranking of best navigation methods after laser space surveying. The mapping is therefore less precise, but a robot still knows where it is and navigates reliably through the rooms.
Working time and app control
Of course, the wiping robot also finds its charging station autonomously when the battery power drops. This is the case after a working time of 2 hours. He then has to charge his battery for 3 hours – both values with which he can live well. Important: The robot must have started from the charging station, otherwise it will have difficulties finding its “home” again.
Two different cleaning modes can be selected via the Xiaomi Home App (Android, iOS), which is already very familiar to us: One is Z-Shaped cleaning, in which the robot travels straight through the rooms until it encounters an obstacle and then turns around. The other mode is similar, but the robot turns away from the obstacle/piece of furniture in a larger radius. However, both modes provide very good area coverage.
Two interesting points about the design of the robot: A bumper is installed around the entire wiping robot. This protects the robot 360° around itself from collisions. In addition, the bumper cushions the collision with pieces of furniture. Normally, the bumper of a vacuum robot is only installed at the front.
Point two: The robot does not drive with tires over the ground, but has a rubber roller system installed. Thus the robot leaves no tire tracks, as it happens now and then with hybrid models.
Assessment and outlook
Practical design, beautifully flat, new wiping technology and solid navigation: the SWDK ZDG300 wiping robot from the Xiaomi universe could fill a product gap that was previously missing not only in its own range. In fact, so far no technology manufacturer has really managed to bring a strong wiping robot onto the market. Now comes the Xiaomi advance. But here, too, one can be sceptical, even though Xiaomi has long set standards in household robotics when it comes to innovation.
The robot costs 1299 Yuan in crowdfunding, which corresponds to $184. As usual, the robot will cost a lot more in the China shops (especially for the launch), I would estimate it at $250. That would still be a reasonable price for a household robot with these specs.