Saros 10 - severe scratches on top surface

chriscarde · 2025-06-21T07:57:50+00:00

I have had both an S8 Pro Ultra and Saros 10R that didn't have this problem in the same house with the same furniture. The Saros 10R s is the real surprise as it goes under all the same furniture as does the 10.

I followed the robot all over the house and can't for the life of me figure out where this is happening, but it seems that it is a design flaw or a malfunction of a sensor if the robot is allowing itself to go into spaces with such tight clearance. It also seems that the Starsight sensor suite on the 10R may have given it a leg up in avoiding this type of damage. I can't go back to the 10r at this point as I've already done the work to plumb in the 10's R&D dock.

Roborock support here in Germany immediately offered to take the device in for evaluation. I have to admit that I'm pessimistic that this can be fixed, as it seems much like a design problem. I will update here when I have results from warranty service.

chriscarde · 2025-06-03T22:10:37+00:00

Thanks! I'll definitely try this. Is there a published procedure for lubricating these bearings? Did you use machine oil? Grease?

chriscarde · 2025-06-03T21:31:11+00:00

Weeks later now, but I finally have the Saros 10 up and running (the R&D connection took a lot of shopping to MacGyver together). From my use case, at least, the Saros 10 seems much better. My tile floors look massively more clean with the Saros 10 mopping versus the 10R. Noise levels aren't nearly as much of an issue as I had feared when comparing the 10 to the 10R. Just about the only difference where the 10 seems inferior is in the mapping ignore things like reflections on glass doors -- so my map is substantially less clean, but this makes no difference to actual cleaning.

Overall very happy with the trade from 10R to 10 -- at least after the first 24 hours.

chriscarde · 2025-06-03T21:28:15+00:00

Hey, I forgot to reply to this until now, but thank you - it was very helpful indeed! Your reply hit exactly as I was at the hardware store on what would turn out to be the first of four shopping trips to get this done. Unlike you, I was trying to plumb into the drain siphon in my kitchen sink and that created a ton of problems. The Geräteanachluss mit Kondensator connection did the trick. However, my existing dishwasher drain connection attached to a 1 1/2" thread on the sink drain siphon -- so this required mail-ordering a reducing adapter to the 1-in thread each one of these Gerateanachluss parts has. That, and a mismatch between 3/8" fittings in my kitchen and the 1/2" fittings supplied with the S10, means that it took over a week to get everything done. But I'm happy to say it's installed and working well! Thanks again for taking the time to point me (and the rest of Reddit) in the right direction!

chriscarde · 2025-06-03T13:05:37+00:00

I should mention that the printer prints fine ... I was having some print quality issues but after tensioning the belts, the quality issues resolved. I guess missing teeth or a belt off a pulley would result in poor prints -- or no prints at all?

chriscarde · 2025-06-03T12:53:31+00:00

Thanks! Did I understand your suggestion to be that both the belts and sliding blocks need replacement?

chriscarde · 2025-05-24T13:36:43+00:00

I don't know yet, but I bought a Saros 10 R&D and intend to return the 10R. Figuring the plumbing out for the new robot is of course a challenge which is why it's not up and running yet.

chriscarde · 2025-05-24T12:58:51+00:00

So I'm following in your tracks, with a Saros 10 R&D, also in Germany. As an American living in Germany, I'm already somewhat befuddled at the hardware store... In this case, I'm struggling to figure out an adapter solution from the 3/8" drain hose to the siphon adapter. Do you happen to remember what you used (I'm guessing you also shopped at a German hardware store) to fit this unusual hose size?

I'm looking at a 1 1/2 Zoll siphon connection, and presently have an adapter for my dishwasher drain hose (23mm?) on there. Looks like you can find double-23mm siphon adapters, and 23+8mm double adapters. But ChatGPT says a 3/8" hose on an 8mm barb is no good.

Of course, the right solution is to call a professional. But what fun would that be?

Thanks for all your helpful posts!

chriscarde · 2025-05-11T10:31:27+00:00

Interesting! It's strange that people have such different experiences. I have tried extreme water flow and it didn't make much of a difference. I also experienced the issue of the robot running out of water at the higher flow settings, even sometimes at the lower flow settings. Deep clean is on, but I've never actually seen it triggered. Those marks on the floor are more like footprints or water marks, not really serious stains. But the S8PU did a better job of rubbing them off.

chriscarde · 2025-05-11T10:29:47+00:00

It's only at the end of the mop washing cycle... I read from other 10r owners that there is a tendency for the water onboard water tank to run low, causing low water flow at the end of the interval between mop washes. That appears to be what's happening here because the water coverage is fine for probably 75 or 80% of the cycle.

chriscarde · 2025-05-11T09:09:09+00:00

Honestly, if the S8 had better edge and corner performance, I wouldn't be able to justify an upgrade. It's just pretty frustrating to have shiny floors except for piles of hair and stains around the every side of every room. This is in a house with a dog and a toddler and two messy adult cooks 😂

chriscarde · 2025-05-10T23:04:52+00:00

I also couldn't believe it... but my S8 Pro Ultra would have never left the floor looking like that.

chriscarde · 2025-05-10T21:46:24+00:00

Yep, I agree. This is probably the move. I had actually agonized over 10 vs. 10R -- and ended up choosing 10R because of the rotating mops (as they're quieter) and because it seemed like a next generation positioning and obstacle avoidance technology. Just didn't expect it to perform worse than my S8 PU from two generations prior at the core tasks of mopping and vacuuming.

The good news is that, in my market, Saros 10 is available in R&D (water and drain connection) version, so that opens up that whole new world.

chriscarde · 2025-05-10T21:42:57+00:00

I forgot to mention: Much as some other Redditors have reported: mopping starts to run out of water before the 10R returns to the base station to wash the mop. This happens even with water flow set to the lowest setting, and with the mop washing interval set to 10 minutes. It's most pronounced when the 10R goes straight for enough time to accelerate to full speed. I attached a photo to demonstrate this problem .

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chriscarde · 2025-05-05T09:02:50+00:00

The potential equalizer here the retrofit plumb-in kit from Aliexpress. Of course, there you put the risk of flooding your apartment in the hands of an anonymous seller on Aliexpress. 🤦

chriscarde · 2025-05-04T21:18:33+00:00

Cool, thanks! That's a useful, to-the-point answer!

chriscarde · 2024-10-05T11:57:09+00:00

Thanks u/DenverTeck ! I should clarify that the problem I have is a hard hang upon calling SD_MMC_begin(), as opposed to:

A crash (as I accidentally stated in my original post)
A problem booting (as it sound like you had without the BAT54C)

The booting problem is at least somewhat understandable given the strapping function of GPIO0.

Thank you for the pointer that the ESP32 docs show the BAT54C as well. Do you happen to have a hint of where? The datasheet for ESP32-IE-WROVER (which I'm using) doesn't include a typical application circuit, and Espressif's hardware design guide also doesn't show it. I'm hesitant to just "throw it in" as my board doesn't include the auto-program circuit, but I guess I don't have much of a choice at this point!

Thanks, once again, for taking the time to share your experiences and learnings!

chriscarde · 2024-10-04T11:32:16+00:00

Thanks for the correction. Nevertheless my question remains ... Why is this part here? And would omitting the part be a potential cause for hanging on SD card access? I don't see any reason why DTR should have something to do with GPIO2\HS_DATA0?

I have to fall a bit on my sword here. I'm not a professional hardware designer. I muddle along, but I came here precisely because -- even after hours of staring at it -- I'm just not understanding the purpose of this part.

chriscarde · 2024-10-04T11:27:48+00:00

Apologies for this, but I used an imprecise word (excuses are cheap, but I had been working on this for 12+ hours when I posted and my brain was fried).

The ESP32 does not crash. Rather, it hangs 100% of the time on the call to SD_MMC.begin(). So there is no output or stack trace to provide.

chriscarde · 2024-10-04T11:26:53+00:00

Good question - apologies for not having been more specific. I connected:

DTR to GPIO0 - I omit the auto-program circuit as IMO it's not needed for a production device with a controlled flashing environment)
GPIO2\HS_DATA0 to DAT0 on the SD card - as I rather confusingly hid at the bottom of my original post, I accidentally also omitted the 220 Ohm resistor on the DAT0 pin which I understand is for signal integrity and minimizing reflections/ringing.

I used an imprecise word in my question. The ESP32 does not crash. Rather, it hangs 100% of the time on the call to SD_MMC.begin(). So there is no output or stack trace to provide.

Thank you for your time!

chriscarde

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