Lidar vs Vslam (cameras vs lasers) For Robot Vacuums - Which One is Best?
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- Опубликовано: 7 июл 2024
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00:00 Lidar vs Vslam (cameras vs lasers) For Robot Vacuums - Which One is Best?
00:10 Random Navigation
00:50 Navigation
02:11 Accuracy
02:57 No-Go lines
04:02 Lights on or off
04:33 False Barriers
04:49 Smart Robot Vacuums
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Хобби
Correction: Samsung released their "Navibot" in Europe in 2010 which was one of the first "Vslam" robots. It beat Dyson by 4 years! Also someone in the comments here made an excellent point that Lidar bots have more moving parts and thus is less reliable over the years. I have heard of laser motors needing to be replaced after a couple years of heavy use, so it is something to consider as well.
Yes LDS motor failure indeed it is something to consider, but if i were to wory about LDS failure i'dd worry more about the failure of the laser emiter or capturing diode failure. LDS motors are VERY easy to replace and VERY cheap (for Xiaomi for example it costs around 8$ on aliexpress). The laser and diode cost around the same ammount but the problem is instaling them. Recalibrating them is a nightmare (without proffesional factory tools). I had the error 1 LDS sensor error on the Roborock S5 and fixed it (dissasamble the motor and all) in under 10 minutes, but if it were the laser or diode i would have had to buy the entire LDS alltoghether (around 80-100$). Luckily most of the time the motor will go first and i know people that use the Xiomi 1st gen since it was released with no problems.
Can you test the Navibot?
Isn’t it vSLAM, not Vslam? (Pedantic arguments over stylized capitalization intensifies)
I think that is why Roborock sells replacement laser navigation modules, although I haven’t heard of anyone having problems with it yet.
Lol thank god someone pointed it out. 1st vslam bots in 2014? South Koreans released their Arte in 2012
Lidar units only need a "you can try to clean under this area" function. So bed and furniture skirts would not be an issue.
Go go lines
@@vennic We need to have like a 'False wall' setting, then the roomba will actively try to drive at the barrier we designate, and then it maps out what it can.
@@Tonatsi that could make things very interesting
Thats is not an issue of "lidar" robots but the programmer who decided to use the distance information of the lidar to not drive into objects. The same functionality is possible if one uses a camera with depth information. One could only use the lidar for navigation and drive bases on the bumper sensor👌
I’m finding this an issue with Ecovacs T8 cleaning under beds. The lining of the underside of bed sags. The “go go zone” would be handy, like in this zone it only uses bump stops. Or, a mode to make the reliance on the camera and bump zones and not the laser. It seems like the hardware is already there, it just needs a new line of code in the app etc.
You also forgot to mention the privacy aspect. LIDAR can only record distances whereas a camera is a camera. "Smart" devices are famously easy to hack into especially on the budget end, so having a camera that can go anywhere you tell it to can be a problem. Not saying that it has or hasn't happened yet, but it's definitely a possibility.
Totally! I was looking for this comment!
Lidar is getting more advanced by the day. Today's lidar system can make a very high resolution point cloud of the environment so privacy is no longer a good argument.
@@broli123 it is still 2D though. All your gonna get if you hack into a Neato robot or something similar is a floor plan, which you can probably get online anyway.
@@broli123 Even if you get a high res map, you would know, that there is a TV, but the cam would "see" the brand, the exact size and so on.
Yes, I heard people hacked into someone's Roommate and was saying on them...that is why I chose Lidar. He didn't mention the privacy issue.😳
Honestly, whoever can design one to stop running over my feet like a toddler or will go clean another room when I tell it to f*** off wins my money
vennic well said.
I have mine set up in a way that it only starts when no one is home.
He recently reviewed one with a forward camera to avoid obstacles, which would solve the feet problem, but yeah voice control to tell it to go clean other rooms would be neat... and not hard to implement.
vennic
Roborock/ any lidar robot is perfect for you
@@CorporateShill Not so much with the neatos. Neither respond directly to the f bomb, although the d80 generally seemed more responsive to being kicked than newer models.
I’ve been waiting this for so long
Cool, I have been waiting to see how Ecovacs did with the AIVI before I decided how I felt about it all.
@@VacuumWars fch
Great comparison! Thanks for this nice video.
I own a 2007 Roomba 581 and later I got a Neato XV-21 from 2012. I use both daily. The Roomba gives a lot of headbutt in the furniture but captures a lot of dust, precisely by using its chaotic navigation, passing several times in the same place. The rotating brush helps a lot too.
Already Neato is very delicate, it does not hit the furniture or scratch the legs of the chairs. It doesn't capture so much dust because it lacks a rotating side brush. I bought these two old ones with years of use and minor defects, but with some love, screws and glue, they still work well to date.
About LIDAR. An advantage of Roomba is its ability to "check" whether the obstacle is true or not, as in the case of the bed "skirt". My Roomba slow down and force the passage very slowly. Without noticing resistance, it can get in and out under the bed.
Neato can't do that, LIDAR sees the fabric as a solid barrier. But maybe Neato could solve this problem modifing the "no go lines" feature by using it in reverse. If the user could draw "yes go lines" around the bed, the robot would know that there is a transposable "obstacle" even if the LIDAR sees a solid wall.
What do you think of the idea?
Great content! Looking forward for new robot vacuum models with both laser and camera combo!
How can the video about robot vacuum be this interesting?! Good job 👍🏻
The truth of the matter is that Neato holds the US patent for the use of lidar on robotic vacuums.
This is the reason Irobot and Shark "choose" not to use lidar.
That's silly. Apparently you can patent everything in the US as long as you are the first one to do so. iRobot holds thousands of patents, including the base idea of automatic cleaning robots, as well. So every manufacturer has to make sure to avoid the most simple things described in their patent.
Ok but what about roborock?
@@brandon_nope Are they officially selling in the US? Because where I live they only sell on ebay and ali, send from china or some other foreign country.
@@brandon_nope Not made in the US.
tmicecave Amazon. The roborock s5 for $499
oh yes, a much needed discussion! Thanks
Can you do a video on maintenance of Robot vacuums? Their long terms costs of ownership, replacement part availability for midrange vs high end, and costs for replacement “consumable” parts(Hepa, Brushes, Rollers). Example, My Roomba spends a lot of time on hard tile floors and it seems like the dual rollers might be experiencing more wear than a brush based system.
I have multiple original xiaomi robots. The only maintenance I do is vacuuming the HEPA filter with a regular vacuum cleaner. The brushes don't seem to wear much. But it should be noted, that it can be hard to buy original consumable parts.
This guys deserves more subscribers
I love all your vacuum videos they are the best.
My mom is soooo happy for the S6 I gave her 2 weeks ago :)
What a opening scene!
The most important thing you said during this entire video is LiDAR is better. I will second that notion and say there is no competition. LiDAR in my opinion, is 10 times better than cameras. My $225 DeeBot 930 from eBay can run circles around my $1200 irobot Which constantly get stuck in the no vacuum zones
Thanks for this and the best robot vac 2019 vid, helped me decide on the deebot 901 with lidar, it's quite amazing
I just bought a 920 Eco vac. I’m having a lot of trouble mapping my large studio apartment. Does yours map well?
@@rebeccakalyani2486 yes I have two, they are both mapping and working great after a year, although there were a couple issues that were eventually resolved
Just got the Roborock s5 max and love it.
Exceptional video on the difference of vslam camera based robots VS LIDAR. I agree that camera can offer more data once the hardware allows it. Maybe in the future they will incorporate 3D Lidar systems? Anyways camera based systems tend to be more durable since they have no mechanical parts. Keep up the Amazing Work 👍🏻
Good point!
Oh hi lol just scrolling through the comments
thank you for the presentation. Very clear and helpful
I went through a Roomba, a Dyson and a Neato, but now I found the Lidar based, Chinese Smart 360 S6 and it is so much better and way cheaper than e.g. a Roborock. App control works flawlessly too.
Vslam has another advantage. It lasts longer. In lidar you have a Camera, a Laser and a Motor to rotate that stuff at a higher speed. And most of the time, the motor fails in the first 2 years and has to be replaced.
Cameras (vslam) on the other side, doesn’t have that problem
But, required processing power and cost of it, also in terms of batteries, is much worse with the camera. With LIDAR you barely need a computer. Raspberry Pi level hardware is more than enough. For camera you might need something like 15 Watts sucking Jetson nano. So it must be used at extremely low frame rate.
I don't understand however why they cheap out on the motor/driver on LIDAR. Motor should almost never fail. The belt yes, but not the motor. However laser should see socks too. It's just that is mounted too high. Front facing camera OK, but that "fake wall" would be a "problem" too. Instead of camera stil, you can use cheap fixed lasers (range finders) or ultrasonic sensors. Yes, it would cost more than a bumper with switches. Yet none has now water or piss sensor...
On my Neato that broke I thought it was the little motor and bought a new motor. The lasers still would not turn. I tested both motors and with 5 volts dc they both turned fine. I discovered it was a broken navigation board. This is on a Neato D7 that cost me $900 and only ran 60 times before breaking down. For that reason I would never buy another Lidar robot. Too unreliable. This is why we have such a huge problem with waste in North America. Too many things are thrown out because you can’t get parts or the parts cost as much as buying a complete new one. The government needs to get involved with this if they want to really reduce pollution and landfill issues.
@@ds99, so a board not specific to lidar robots broke and you are never buying a lidar vacuum? Makes sense. Especially considering that camera robots have bigger and more complicated navigation boards.
@@ds99 Louis Rossmann fights here on YT for the right to repair just for this kind of reasons. In your case the culprit was probably (I guess) a bad solder job, a blown mosfet costing perhaps cents to replace. And then the consumer is left with absurdities as if you have to replace the house to change the dead light bulb. But the same could happen with the camera or anything else. Because the market is driven to replace not to repair. I have a dead temperature sensor (AC) and a small speaker (for blinker sound) in my VW SUV, less than few dollars total worth, repair is not available, replacement is in thousands. And then as you said.... I could not agree more.
Speaking about user experience and the global feeling you have, my 2015 Neato is way softer than my brand new Roomba. The roomba keeps bumping everywhere as if it had no cartography at all. It is very stressful to see it force its way on cables and fragile stuff... A LIDAR in that case seems to be way better than any VSLAM. The hybrid system of course seems to be the most intersting
I have a vacuum bot with LiDAR in it, which is perfect cleaning companion except when it comes to large mirrored wardrobes that I have, which wreck the sensors and it’s ability to accurately map the house. I was actually thinking of upgrading to Vslam tech bot, do they have a similar problem?
Vslam is actually older than 2014. I had a Samsung one with a camera, but it got fully confused when it drove under a couch. 😂
Great video! Love the channel, you guys convinced me to go buy a used Xiaomi gen 1 a while back and now looking for my next one haha.
Btw what’s the song at the end? Hehe
cool. I learned a bit today!
Good overview of the pros and cons of each technology! I'd just like to point out the distinction between localizing the robot (knowing where it is) and obstacle avoidance. The robots with V-SLAM systems use it only for localizing, so they typically use a bumper and/or IR proximity sensors to detect obstacles and avoid them. How well they avoid "pet accidents" and still push on overhangs to get in under your couch, depends on how correctly those other sensors are tuned. A 2D lidar, on the other hand, can offer both localization and obstacle avoidance, but only at the specific height of the lidar sensor. That's why lidar robots bump into lots of stuff, or need bumper/IR proximity sensors to compensate for its blind spots.
This is why we at Electrolux chose a third path for our Pure i9 robot, launched in 2017: It has a 3D lidar with no moving parts, so it can localize itself like a lidar robot, while also seeing obstacles at any height and with high resolution. This gives a lot of data to analyze what it sees, such as measuring the height of thresholds before climbing them, avoiding socks on the floor and even seeing the edge of a staircase or carpet and cleaning along it.
i literally laughed at "pet accidents" lmaooo
He sits in the middle like they are his pets :D
How do you track the movement of the vacuums? I have an Eufy and I'd like to map out what routes it takes.
I had VSLAM based robot from MAMIBOT and returned it due to navigation problems in my house (f.e. I used it for two weeks and only once it found way back to charging base). It was not a bad robot but poor app and navigation problems were just horrible so decided to go with lasers. Xiaomi Viomi V2 PRO (with laser) that I bought later had no problems with mapping entire house right away, it always returnes to base and never gets confused during cleaning (even when I move it during cleaning). Viomi has much better app with "no-go" lines and all the good staff that is available via Xiaomi Home App (MAMIBOT VSLAM was unable to save any map in app after cleaning so did not create "no go" lines). For me laser is significantly more precise, reliable and many times offers better options in app.
Another draw back with lidar it adds height that little bump dome can be enough to stop it from going under low objects
Video is really informative!
Only cost comparison was missing.
wonder if they can add an "ignore barrier" function to the app that ignores obstacles in certain areas unless they trigger bumpers. that would deal with issues like false bottoms on couches.
This is really vacuum historical wikipedia ive been looking for
aw thanks!
thaaaaanks a lot.
We have Purei9 from Electrolux. It is a laser based system. But instead a spinning laser on top it is placed in front with two laser scanners do provide a 3d laser image. There you have the no cons which you have explaned. Poo -> no problem, no light -> no problem, more image information -> check.
there is one more thing You should mention - privacy. Considering how bad those robots are secured - they can be quite easy hacked into spying (which some of them are already doing...).
So not only Your house plan and any sound from home is send away, but also a pic/vid feed can be :(
So till full maping/AI can be done only in vacuum(offline), not shared to cloud for AI checks, I would avoid them.
I don't believe that any of the VSLAM robots share anything with the cloud.
If they did, why would they need such powerful processors to interpret the data from the camera if it was all done on a server somewhere else?
Very nice comparaison
I have both Roborock S50 and IROBOT I7+ and by far the LIDAR in real situation the LIDAR are far better and more efficient
Thank you great explanation
You are welcome!
thank you
How well do vslam vacuums work vaulted/cathedral ceilings if the angles of the ceiling don’t match the floor?
hi. is this true... i read that lidar sensors break more then the others due to the movement they make? because they are moving parts. thanks in advance.
Could you please review one of Miele robot vacuums?
Can you please make a video on 1 brush v/s two brushes? The Roombas come with 2 and the 360 S5/S7 come with 1. Which would clean better/faster? Thanks
Maybe review a panasonic stick vacuum. I heard their it vacuum is really good. Also maybe try the new black and decker stick vacuum. My father has it and he likes it so maybe a good one to try.
I've tried Shark IQ and Roborock S5 (VSLAM and lidar). Lidar is definitely better and VSLAM was completely useless on the Shark. The Shark never made a map of my house and never cleaned in consistent straight lines. The Roborock got it right the first time and consistently cleans straight and well
LG cordzero review please.. thanks for the quality reviews
I always wish my Neato Botvac 80 would go over the same place twice. Of the dirt that it does miss, it always just misses it and never goes near it again. I know my Botvac is old tech, but sometimes I wish it could switch between Lidar and Vslam, like do one first, then the other automatically. Precise is not always better than random, but the two together I bet would be very effective. In fact, they should make a test robot vac that allows switching of the two systems or using a combination of both and see which is used more by testers in their homes.It would be neato to see the results.
I saw this tumblr joke once about “releasing” 24 roomba with an Alexa, and this guy could actually do that and that scares me
I saw the Roborock s5 bumping into my arcade1up cabinet. Cos it can’t see black object but can the camera robot see black objects?
Lidar have a little trouble with mirrors. It’s reflect laser beam and I have double size of my room it the app, or artificial map objects if it’s small mirror.
You have precision floor mapping with lidar so what else do you need your vacuum to do? I argue against the concept of "future proof" because this really is the most i need out of a robot vacuum.
I think LIDAR technology will also improve substantially in the near future
I have a Roman i7+ and it works perfectly at night and in the dark
Can you guys do a review video of the Eureka Mighty Mite and Eureka Quick Up?
Great video. One thing I feel it lacks is that you relate everything to the future of robot vacuums being AI - but you don't explain what this "AI" will bring to the table. Robot vacuums already clean homes very well. They already have scheduling through apps, they already have go back to recharge, and continue, they already have no go zones, they already have bump protection, and fall protection. What benefits could AI bring, with the additional cameras in the future?
is lidar ok with floor length mirrors or will the cleaner try to enter a room that doesn"t exist? If so, would setting up a no go area in front of the mirror solve the problem? Or should I limit a purchase to vacuum and mop cleaners with no lidar?
There's a spanish brand claiming to have the more powerfull vacuum bot. I would love to see a review for Cecotec conga 5090 and 4090
The Doug Demuro of vacuums!
Thiiiiiis is the 2020 Roborock S5 Max and it is one of the best robot vacuums yet. Today I will take an in depth look and show you all of its quirks and features, then I'm gonna see how it cleans and then I'm gonna give it a DougScore. For more of my thoughts on the S5 Max, click the link below or visit vacuumtrader.com/robosteer
Hello thank you for your videos they are great and have helped us out a lot. I have a question looking for a robot vacuum that is able to go under some coaches that we have that have cloth skirts. We also like the ability to use a smart phone app. that will do a mapping of the house. I don't know if there is also one that systematically cleans instead of bouncing all over the place. I think I am looking for the impossible do you have any recommendations thanks.
So we are still working on our search tool - but try looking at some models and their features here:
www.vacuumwars.com/types/robot-vacuum-cleaners?p46=2460,2351,2364,2338,132,133,134,135,136&p60=178&p37=104
In that link I have preselected all the smart ones that use Wifi and have no-go zone (which means their is an app involved). It's not perfect but it's a good start.
Hey, can you review the Ecovacs Deebot M82 please?
What about replacing the laser with a camera but still have the spinning part?
I really like the Eco vac. I would like to see all three options on one vac though.👍🙂👍
And I would like to see a vacuum cleaner that has vacuum ducks on the corner that I can turn on and off by itself.
Great video
Thanks!
@@VacuumWars I think you can make a good video on maybe trying to find one of those old Royal all metal vacuums and doing a review on one of those
It would be nice if the user could choose to turn the A.I. on or off. Some users have complained that it's too sensitive and wont' vacuum places where they would like.
Will you be testing the zipper wand?
Thanks for the video!
Would you do a video on Indian company Milagrow robovacs sometime later?
Hi i have a question to iwant to ask you, i really interested in i robot i7+ and i watch all of your videos related to this. As i can understand it have lower than 7 cfm and i couldnt find from anyone who make a video about cfm so i really need your information.According to I robot it supposed to be 17 cfm.Is this number seen when its on carped mode or is this supposed to be more then 17 cfm on carpets? And i have one more question related to your this video ruclips.net/video/Jde-79953hI/видео.html in this video you are saying that "you bought two i7 and first one had a bad suction
and second one finnaly powerful as roborock s5" my question is Is this
Can you review LG’s ThinkQ robot vacuum.
Best robot vacuum navigation method is having both Vslam and Lidar in one robot vacuum.
erm, the first robot vacuum was electrolux trilobite from 2000, which had random navigation, and first camera robot was Samsung NaviBot sr8855, which is today old like Roomba 500 series. so older than dyson and Roomba 980.
To me that was an awesome video
Awesome! Thanks!
I'm pretty sure Samsung robot vacuums had a top mounted camera before Dyson or iRobot.
Good
Shouldn't they use a Kinect style camera in the future
It would be a good idea in it can use other cameras like a smart tvs cam or a security cam .. ets
What if they used lasers and cameras on the top? Superbot?
Hey, I'd love to see what you think of Cecotec Conga 4090. It's not exactly a popular maker, I myself heard about it just 20 days ago and since the deal was too good to pass, I instantly grabbed it instead of Roborock S50 and boy, am I impressed with it...
procopy ruclips.net/video/i0CHqyA1hZM/видео.html here is a German review
With regards to more and more advanced processors (the 32-bit cpu part of the video), the first robot vacuum, Electrolux Trilobite, used a MC68332 32-bit processor, so it is kind of back to basics :-)
The 32 bits only refers to the main CPU bus architecture. Todays vacuums use ARM-based System-on-Chip controllers that are more or less the same power of a smartphone, many megabytes of RAM, and up to 8 gigabytes of flash memory. The MC68332 is extremely primitive in comparison. The only similarity is the 32 bit bus used in the architecture. Nevertheless it's an important stepping stone in the development of household robots.
@@nrdesign1991 I beg to differ. The Trilobite is in my opinion more advanced than most Roomba's (all less than the 900-series) and more advanced that the Electrolux vacuum release a couple of years ago. Regarding the ARM chips used, there is a big difference in speed and memory capacity between Cortex-A chips used in smartphones and Cortex-M chips used for controlling robots - one are good at interfacing people and one is good at interfacing hardware :-) Also, Cortex-A chips tend (there are exceptions like iMX.5, BCM2835[ARM11] and Allwinner A10) to become obsolete and unavailable quite fast, while Cortex-M chips (and embedded SOC's in general) are available for very long periods.
I love my 50 dollar super clean robot. However it gets stuck easy. Also got a irobot braava 380 and I find that it doesnt run very long even after hours of charging. Possibly a bad battery
Considering getting a nice robot vaccum and the braava 240 mop robot.
Yay
how about RGB-D camera?
The biggest reason for a company to choose cameras is cost. You can source a smartphone camera for under a dollar and then write vSLAM software that costs zero dollars to duplicate. Lidar is more expensive to manufacture, less reliable, and requires more resources for design / repair. Whether the company passes these benefits onto the consumer in the form of e.g. better cleaning power for the same price is up to them.
Can you please review Xiaomi Viomi V-RVCLM21B
Three years have passed since this video was recorded. Is lidar still ahead? Do you think there's a chance for VSLAM to take the lead?
The best option is clearly fusing both sensors
Maybe a little late to the party but I thought I'd let you know that the lidar robots basically use the same algorithm which is called slam. In my opinion you shouldn't call it lidar Vs vslam but camera.
As soon as a lifespan of a robot vacuum is 2-4 years, it makes sense to focus on the technology that works now. And it is lidar. When VSLAM will offer more, then just buy a new electronic "pet" :-) For now this "future-proofness" doesn't mean much for the end customer.
I think a key idea for the lifespan of a robo vacuum has to do with the availability of replacement parts and the savvyness of the end consumer as well.
For example, I can buy a new motherboard for the roborock S5 that I have, and have the technical knowhow on how to replace it should I have to.
They need both, before they clean my house
the most important point is that lidar is much more expensive for the companies to use, cameras are very cheap
Elon musk said the same thing about tesla's detection technology 🤔
Honestly since cameras and processing power are so much cheaper than a proper and robust LIDAR implementation I'm really surprised that they haven't took over the market yet.
That said, software is the key inhibitor but since really beastly visual processors become slowly afordable for the hobbyist it is only a matter of time now.
Tim Solinski As the saying goes “It’s not how much it costs, it’s how much people are willing to pay for it”
The costs for the bill of materials is probably higher for LIDAR. I do like the idea that my device will “improve” over time, and they probably up charge not only for “profit” but for R&D to ‘invest in the future’. As long as the processing for navigation is local in device and not cloud based I’m fine with it
@@uss_04 though luck than, since every single one of them phone home to use some sort of cloud service.
There is currently not one of those little suckers that is self contained.
At least not to my knowledge.
Tim Solinski The cloud can be used for control, management, and updates of features. Most of todays vacs are perfectly functional without an always on internet connection.
Update it, cut off the internet connection, and just use the device buttons to manually clean. AFAIK you lose scheduling and telemetry but it still does its primary purpose well.
I’m not sure if vSLAM/LIDAR can make its first map with the cloud, and then cut off the internet to see if it can do the same job (navigation/recognize virtual walls) but that would be an interesting experiment.
Also To see if eveyrthing can be managed locally.
Additionally:
There is/was a piece of software called “Doomba”, where you could type in the local ip address of your mapping roomba, extract mapping data, and use it to auto generate playable Doom levels. So it does look like at least for Roomba maps are locally generated. In theory, after initial config, it can live off the internet.
www.polygon.com/2018/12/26/18156304/roomba-doom-levels-doomba
Vslam is the system used by Cecotec that are the best vacuum robots.
Hi. When Roborock S5 Max on your channel?
Random is fine for apartments. at least it goes around multiple ways
You should always include a night more for your vacuuming test. In the winter night time come early and my Roomba does not clean when I need it to. Will try lidar bot next.
Are those lasers fine whit pets eyes?
The Lidar robots should do a mapping run where they use also use the bump sensors to see if something is actually a wall or just a light piece of fabric where they could go through so that the floor under the sofa gets cleaned as well. I also think that right now you should not buy a camera robot. It might be the better technique in the future but the processors that are installed in the current robots are not fast enough to handle artificial intelligence and flawless navigation. You would have to buy a new one with a better chip.
And then they destroy your lego creation, spill your milk, knock over your trash can, and more disasters
Why not have all three? The top camera could be mounted on top of the LIDAR housing. It could aid the LIDAR in mapping the room. The front camera could still be good for object recognition & avoidance. Personally, I don't mind if a floor robot stays away from skirts & doesn't get stuck under a chair or couch.
Why can't I Watch The Braava 380t Review
It' s Private
Why?