<p>While there were a few USB stick miners very early in the game, rigs have rather gotten bigger than smaller since then.</p>

<p>According to <a href="https://en.bitcoin.it/wiki/Mining_hardware_comparison" rel="nofollow noreferrer">Mining Hardware Comparison</a> the smallest rig that is still shipping,  <code>Antminer U3 Batch 2</code>, needs 63W.</p>

<p>Its energy efficiency is only one tenth of the current best equipment though, and you'd have to invest at least $40 which you likely would never make back:
<a href="https://bitcoin.stackexchange.com/q/41276/5406">In the ASIC-age, is it worth starting mining Bitcoin at home?</a></p>

CC BY-SA 3.0
2016-08-23T16:51:24.477Z
Oh, this was my 500th answer on Bitcoin.SE. Congratulations to myself. ;)
Murch
CC BY-SA 3.0
2016-08-22T18:52:39.357Z
2016-08-23T07:57:20.517Z
2017-04-13T12:47:36.647Z
Murch
<p>Im looking for 20W/h (at 5V) consuming system for running with solar panel. Is it possible with current miners? If you say it will never be profitable I say 5$ for a month is big target for me. The currency can be different than bitcoin. Im so beginner. </p>

CC BY-SA 3.0
2016-08-15T09:50:44.863Z
5$ might be worth it for you, but keep in mind, the expenses to build such miner will probably be 50-100 times that. So before you have earned that back, and top it with 5$....
Viezevingertjes
CC BY-SA 3.0
2016-08-15T10:04:16.840Z
Can you give some name of example miners?
user30878
CC BY-SA 3.0
2016-08-15T13:08:43.667Z
Pretty any miner that runs on linux will do, if you would use the raspberry pi.
Viezevingertjes
<mining-profitability><mining-hardware>
Minimal but profitable miner setup with solar energy
user30878
# Minimal but profitable miner setup with solar energy

(Asked by: username_0 on 2016-08-15)

Im looking for 20W/h (at 5V) consuming system for running with solar panel. Is it possible with current miners? If you say it will never be profitable I say 5$ for a month is big target for me. The currency can be different than bitcoin. Im so beginner.

**Tags:** mining-profitability, mining-hardware

> **Comments:**
> **username_1**: 5$ might be worth it for you, but keep in mind, the expenses to build such miner will probably be 50-100 times that. So before you have earned that back, and top it with 5$....  
> **username_0**: Can you give some name of example miners?  
> **username_1**: Pretty any miner that runs on linux will do, if you would use the raspberry pi.  

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## 1 answers

### Answer by username_2 on 2016-08-22. Score: 2 | Accepted answer

While there were a few USB stick miners very early in the game, rigs have rather gotten bigger than smaller since then.

According to [Mining Hardware Comparison](https://en.bitcoin.it/wiki/Mining_hardware_comparison) the smallest rig that is still shipping, `Antminer U3 Batch 2`, needs 63W.

Its energy efficiency is only one tenth of the current best equipment though, and you'd have to invest at least $40 which you likely would never make back:
[In the ASIC-age, is it worth starting mining Bitcoin at home?](https://bitcoin.stackexchange.com/q/41276/5406)

> **Comments:**
> **username_2**: Oh, this was my 500th answer on Bitcoin.SE. Congratulations to myself. ;)  

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