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Is there a warranty on the Moonlander 2 devices? I just bought mine about 2 months ago, and I think one of them is already starting to go out. I run it stock, and don't overclock it, if that matters.

Thanks!

Doctor’s 1st quesion: what symptom/s you’re experiencing?

These little toys should last forever unless someone hammers them - - except its fan which sometimes makes noise but you can use a small screw driver and tight or loose them - just a bit.

The device will just drop out of BFGMiner with 0 hashrate, or it will have a high number of rejected shares as it is finding dupes of ones it's already found. The other two Moonlanders do not exhibit this behavior.

That sounds like some communication issue between device and your computer.

You probably try this test, but if not, this is the only suggestion I have.

Disconnect all of them and connect 1 device at a time to the same USB port and or hub. When you make sure 1 works as designed, remove it and connect the next device.

Just to ensure if it’s really device problem.

Yeah on it's own the device works fine. It's like BFGMiner just forgets about it, and doesn't send it work.

So, the device itself is alive.

Are they connected to external powered HUB? Does it have enough power to feed enough amp to each and every one of them?

These little guys are very sensitive and need exact amount of power to work specially if you try to “over-clock” them - see developer’s 1st post here. And, most powered-hubs are incapable to provide necessary amps even if those with 10 or more ports. I bought one from Anker which supports up to 7 USB but I can only connect 3 ML 2 - adding 1 more would mess things up bad - so I had to invest on 2 more hubs to get all my 9 ML 2 running.

You’re running Win10? Raspberry / Linux?

Win10 version keeps trying to restart it and won’t give up until it’s done! But Raspberry Pi’s driver is not compiled to include this functionality so in most cases you either have to restart your rig or BFGminer.

RPi 4 with Rasbian OS. Amazonbasics 36W Powered USB 3 hub. I'm running these stock at 600 Mhz. I edited my previous post with a screenshot. My question is if it was the hub, wouldn't the symptoms be spreadout among the miners? In my case it is the same miner having the issue.

I had nothing but trouble with my Pi 4 here. Even though things were working fine but every few days I had to restart things up because BFG was unable to auto-start 1 or more ML2 and eventually they stopped working!!

So, I switched to Win10 and didn’t have to even look at them!

Sorry can’t remember how many ML 2 you’ve got there. But remember these cheap Amazon stuff @ 36W usually provide 2.xx or 3.xx AMP max / total and NOT per port. Meaning, total AMP will be divided between your ML 2 sticks. They may start up ok but after short period of time they begin starving for more power which your hub fails to provide.

Remind me how many ML 2 you have there, I may be able to suggest how to deal with them so you don’t have to spend more money! Wink

I've got 3 ML2's now on a 65W 10 port Amazonbasics powered USB 3 hub. Went ahead and bought another one. I might be able to send the 7 port 36W one back. I just got the 10 port hub while we've been posting here...so far I've not had any problems with it, but I'll give it a few hours and we'll see.