Thanks for this. Lots of folk have water ingress. Still not sure where from though. I’ve used weatherproof sealant around every join and also used the 3d printed hood on mine which goes over any joins so I’d be surprised to see any water get in mine. Nice to see the back too. I’ve also sealed the joins around there but looking at this I probably shouldn’t have as if any water does make it’s way into the back part, it may not be able to escape as fast and build up. I may drill a small hole around the back for drainage.
Those are 200 ohm resistors (200 with 0 more zeros). Parallel resistors means less cost. High-wattage surface mount resistors are very expensive, especially if everything else uses low-wattage resistors; and in addition, multiple resistors allows the load to be spread to more area so no thick PC board traces are needed. Again, to save cost. If there are 12 in parallel, the result is the same as a single 16.7 ohm resistor of a higher wattage.
I'm curious how that bottom channel is designed under the circuit board. Does it go between compartments? Also, how's the sealing around the light. The other thing I noticed, is that 0-ring has no flat boss to seal on on the rear where the thin divider is.
No, answering your question, people are not installing upside down... I haven't and got a loooooot of water in it. I think it is not sealed right, and over time, with rain and sun, things start to get loose over time. I recommended to them to do a way for the water to get out, so you are safe if it gets in.
Fascinating. I wonder if the LED on the front of the unit has insufficient waterproofing. The main circuit board is covered in conformal coating, so as long as it isn't submerged, it should be able to handle a fair amount of water.
@@thespencerowen I've heard from a couple of Luba owners they believe the water came in from the LED on the front. I took no chances and use transparent silicon around all the seals including the LED light... and I've been lucky enough not having to mount the RFK super high, but instead on my deck so when Winter comes and long before the snow, I'm taking that RKT antenna indoors!
water inside: heard it's due to hot days, the air inside expands - create a break in seal. Then the humid air gets in. Then when the air cools, the seal reseals, the humid air inside condenses, so that's how the water gets in. Repeat over time to build up. Mammotion know about this and plan to address.
That’s a plausible theory. I’m not 100% convinced because the bottom screws and the antenna connector aren’t air tight so there shouldn’t be a seal to break.
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Thanks for this. Lots of folk have water ingress. Still not sure where from though. I’ve used weatherproof sealant around every join and also used the 3d printed hood on mine which goes over any joins so I’d be surprised to see any water get in mine. Nice to see the back too. I’ve also sealed the joins around there but looking at this I probably shouldn’t have as if any water does make it’s way into the back part, it may not be able to escape as fast and build up. I may drill a small hole around the back for drainage.
I'm thinking exactly the same about a drainage hole in the back.
Those are 200 ohm resistors (200 with 0 more zeros). Parallel resistors means less cost. High-wattage surface mount resistors are very expensive, especially if everything else uses low-wattage resistors; and in addition, multiple resistors allows the load to be spread to more area so no thick PC board traces are needed. Again, to save cost. If there are 12 in parallel, the result is the same as a single 16.7 ohm resistor of a higher wattage.
I'm curious how that bottom channel is designed under the circuit board. Does it go between compartments? Also, how's the sealing around the light. The other thing I noticed, is that 0-ring has no flat boss to seal on on the rear where the thin divider is.
Could it be collecting water from high humidity? I would imagine water vapor could penetrate through those screw cavities.
Thanks
No, answering your question, people are not installing upside down... I haven't and got a loooooot of water in it. I think it is not sealed right, and over time, with rain and sun, things start to get loose over time. I recommended to them to do a way for the water to get out, so you are safe if it gets in.
Fascinating. I wonder if the LED on the front of the unit has insufficient waterproofing. The main circuit board is covered in conformal coating, so as long as it isn't submerged, it should be able to handle a fair amount of water.
@@thespencerowen I've heard from a couple of Luba owners they believe the water came in from the LED on the front. I took no chances and use transparent silicon around all the seals including the LED light... and I've been lucky enough not having to mount the RFK super high, but instead on my deck so when Winter comes and long before the snow, I'm taking that RKT antenna indoors!
water inside: heard it's due to hot days, the air inside expands - create a break in seal. Then the humid air gets in. Then when the air cools, the seal reseals, the humid air inside condenses, so that's how the water gets in. Repeat over time to build up. Mammotion know about this and plan to address.
That’s a plausible theory.
I’m not 100% convinced because the bottom screws and the antenna connector aren’t air tight so there shouldn’t be a seal to break.