Mining btc from a usb stick?

[bitcoin-shark]

hello i saw a video on you tube of someone who mined btc (even with a certain profit) with usb sticks connected to a notebook, of course the energy savings would be considerable, the demand is it is really possible to mine in this way instead of with an asic?

[kano]

It would be an ASIC USB stick like this one:
https://bitcointalk.org/index.php?topic=5355470.0

Of course it's 200-300 times slower than a 100TH/s miner so makes 200-300 times less ...

All older ones would be slower than that one also.

[mocacinno]

What year was that video you're talking about posted?
I have a couple of those sticks laying around... I stopped using them many, many years ago...

[bitcoin-shark]

so it would be possible almost i'm tempted, of course the gains would be much lower but also the energy consumption would be almost zero, is a fairly recent video of 2021 without wanting to advertise them i place the link in case tell me and i will removed it https://www.youtube.com/watch?v=FyRGkbu-LB8

[mocacinno]

I haven't watched the complete video... just the first 10 seconds...
This guy is showing a newpac usb miner... You can find them on sites like this one: https://www.bitshopper.de/en/shop/sha-256-miner/usb-miner-bitcoin/newpac/

The device hashes @45Gh/s (maximum... it is rather difficulty to make those usb miners run consistently at those speeds), and at these speeds it'll draw close to 10 Watts.
Let's assume for a moment, you're able to get it running @45 Gh/s whilst it draws 7 Watts and disregard the power consumption of the rPi (or pc) you need to connect it to. Let's also assume you only pay 5 cents/Kwh for your power.... These are huge assumptions: you'll probably won't keep it running @45Gh/s consistently, if you do it won't consume only 7 Watts, and you'll probably pay way more than 5 cents/kwh

Let's plug in those numbers at a mining calculator:
https://www.coinwarz.com/mining/bitcoin/calculator?h=45.00&p=7&pc=0.05&pf=0.00&d=19893045048575.00000000&r=6.25000000&er=1&btcer=59348.38830000&ha=GH&hc=11999.99&hs=-1&hq=1
Even at these absurdly low assumptions, you'll only make 1 cent/day, so it'll take you 12.000 to recuperate your initial investment (not including the S&H, taxes and customs charges... Nor the investment of an rPi).

Even if you disregarded electricity completely, this gear would still only make 2 cents/day...

[R2-D2R2]

  You will make 0$ so if you wish to waste money go ahead with these usb sticks

[NotFuzzyWarm]

You will make 0$ so if you wish to waste money go ahead with these usb sticks

No, they will probably make no money. Then again these are aka "Lottery Sticks" because there IS a chance you might get a block from a solo pool. In that case -- cha ching!! If you sometimes buy a lottery ticket then ya might as well go for a stick to try your Luck because at least they are dirt cheap to run.

[kano]

Two things:

1) No you don't go buying USB miners to make a profitable mining company - everyone knows that - no one does that.
You buy USB miners for learning about bitcoin mining, for fun and for lottery mining since they use so little power.
As I already stated above, the rewards on those old slow small USB miner is 100's of times smaller than a current miner.

2) The current USB miners are around 365GH/s at around 15W
i.e. 3 of them, with simple cooling, can get you 1.1TH for around 45W
https://bitcointalk.org/index.php?topic=5355470.0