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🧔Bitcoin-nostrichšŸ’œ and node runner⚔

-PV-Mining Box Threadā˜€ļøā›ļø - Part #5:

100% renewable mining with a private Photovoltaic System (PV) over 6 months from summer to winter?

Let's crunch some numbers! What did I earn? How high was my Hashrate?

Earnings: 0,00359495 BTC. Yeah, that sucks. And it got worse to the end, Bitcoinhashrate always goes up. Halving next year…

Hashrate: something like 3,1 TH/s on average. SUCKS! Even if they only run @800W each, I should get 20TH/s out of them! Why is my Hashrate so low!?

Here’s why. Miners were only running for roughly 6 hours a day.

Many reasons. Wall-o-text incoming!

I've got 46 solarpanels Ć  370Wp, so 17kWp. We don't have a power battery šŸ”‹, as they are fucking expensive! Primarily I bought the PV system to power my families' house, an EV and later on also a heat pump. Last year it produced ~18.000 kWh. Seems to be more than enough to fire up two S9 miners, right? Let's find out...

šŸ’Æ šŸ’ššŸ”‹ means: The miners will only be active during daytime. To get as close to 100% renewable mining as possible, Home Assistant is trained to only activate the S9s if there's enough excess power, as we don't want to run the miners with power from the grid (which is not šŸ’Æ renewable...).

šŸŒ¤ļøOn a day in February with a mix of clouds AND sunshine the activity graph can look like this, screenshot is from January:

So even with such a big PV it is not possible to maintain 100% uptime of your miners during winterdays, if you want them to run on 100% renewables...

But there are good days in winter, too, right? Yeah, of course. But those days look like this, and now I expose myself as a blatant liar! 25th February:

You can see it. It’s not 100% green mining. There are peaks of power imports that I don’t care about, when they take less than a minute. Deal with it, Greta!

Key-Lesson of this whole Note?

For all of you dreaming of S9 miners powered by 2*300Wp panels: it will only work with direct sunlight ā˜€ļø and good angles. Cloudy weather šŸŒ¦ļøā˜ļø means downtime or grid import...

Here's part #4 of this thread in case you missed it:

#[0]

-PV-Mining Box Threadā˜€ļøā›ļø - Part #6:

I saved 16,87€ by PV mining last month with old and inefficient S9 miners. How the fuck is that possible!?

Let’s have a look at my mining rewards of the last month. February 2023. Numbers!

February’s weather was surprisingly nice. After all it’s a winter month, one of the 4 worst months for PV power production in the northern hemisphere.

Averages numbers per month:

āš”ļø 3,3TH/s hashrate

āš”ļø 273W power consumption.

Averages numbers per day:

āš”ļø 6,5 kWh per day, which were used to heat my livingroom

āš”ļø1011 Sats per day (or 0,00001011 BTC)

Cost:

āš”ļø195 kWh Power consumption by 2xS9 miners

āš”ļø ā€žpriceā€œ of 1kWh of my own solar power is 0,067€ (as I could sell it for that price to the grid) - that’s 13,13€ total.

āš”ļø0,00030317 BTC earned in total. ~6,60€ (at 22.000€ per BTC)

āš”ļøThatā€˜s a loss of 13,13€ - 6,60€ = 6,53€ right?

WRONG! Because I also had to buy 195 kWh of natural gas LESS to heat my living room!

āš”ļøgas price is 0,12€ per kWh atm (german issues…). So I saved 23,40€ in heating cost while mining.

🧮 SO IN TOTAL, mining saved me 23,40€ - 6,53€ = 16,87€ in February 2023.

And that’s so fucking cool… āš”ļøšŸ’œšŸ§”šŸ”„

And as a side effect I also:

🧔 helped securing the finality of BTC transactions and

🧔 stole some rewards from C02 emitting miners and

🧔 raised the percentage of green mining. It's around 53% atm! Have a look at npub13lkyycj8s3da6fhndtj0wd6s3s2ahmq86s7wrruvzd4tnc66cgfqn4lpsy 's latest notes…

Next part of this thread will be about beneficial mining pool pay-out rules for PV mining.

Here's part #5 of this thread in case you missed it:

@#[0]

Hey, why don't you simply publish your Blog article on nostr? Everything you need is there. Bitcoin Audience, Zapps, and Blogspace. Yes, no twitter threads. You can post Blogposts here! Nostrgram.co even offers a filter to only show long posts, aka blogposts...

I'd say private group chats. Or the integration of whitelist Relays in different tabs of your feed/browser?

Do they offer a way for the local citizens to engage in the mining operations? To specify my question: could locals buy miners, place and operate them in the power plants mining room for a small fee?

lightning:LNBC21U1P3LAC6XPP5PUQM2DVRV6Q596G6R78PRZ5U0JLKUDNSGZEHTDL9AGYSYSR5RXQSDQQCQZPGXQRRSSSP5K4DGG522NY4PH8UK0Q469G72U43AHEP09VLXT3R8UGD2JTZ5D3PS9QYYSSQ530THGZSP6SKWNUD2E6DW8S6VG5QAD9R4LLAT0FKKZ7HZSMELVEPD6JPJVZH5F5NCTG0U7TF8D7VAPKVEFUVZ8NMQG9QNMA33HLX0WGQ4DE66D

-PV-Mining Box Threadā˜€ļøā›ļø - Part #4:

Silent S9 Antminers with Noctua Fans? Hear, hear!

https://nostr.build/av/nostr.build_08b60bb1a5a831f899ddd4ca199ee7d4c6f054c0b4a20945e4ac44a7363c762b.mp4

As you can hear, the S9 are damn quiet. Vistors barely notice the noise. They rather notice the heat…

The Noctua Fans are really making a huge difference here although they do not meet the official specifications for actual mining fans. That’s the reason why I run each of the S9 on 800W max. Then the Fans run at ~75-80% speed inside of my box. The fans wouldn’t be able to cool the miners sufficiently at higher temperatures or higher wattages. They are too slow.

But that’s not really a downside as the S9 runs most efficiently around 700-900W anyway...

On the picture below you can see that I’ve also added two random case fans to let the air around the PSUs circulate:

If you want do these mods on your own I suggest contacting the community in this telegram channel:

https://t.me/BTC_solo_mining (german guys mostly, but speaking english there should work, too 😊 ) BTW, nostr needs proper group channels so we can leave telegram…!

To sum up, at that point my Mining Box was perfectly suited for the use inside my living room. So how much have the miners been heating? I’ll talk about that in the next update!

Here's part #3 of this thread in case you missed it:

#[0]

#[1]

-PV-Mining Box Threadā˜€ļøā›ļø - Part #5:

100% renewable mining with a private Photovoltaic System (PV) over 6 months from summer to winter?

Let's crunch some numbers! What did I earn? How high was my Hashrate?

Earnings: 0,00359495 BTC. Yeah, that sucks. And it got worse to the end, Bitcoinhashrate always goes up. Halving next year…

Hashrate: something like 3,1 TH/s on average. SUCKS! Even if they only run @800W each, I should get 20TH/s out of them! Why is my Hashrate so low!?

Here’s why. Miners were only running for roughly 6 hours a day.

Many reasons. Wall-o-text incoming!

I've got 46 solarpanels Ć  370Wp, so 17kWp. We don't have a power battery šŸ”‹, as they are fucking expensive! Primarily I bought the PV system to power my families' house, an EV and later on also a heat pump. Last year it produced ~18.000 kWh. Seems to be more than enough to fire up two S9 miners, right? Let's find out...

šŸ’Æ šŸ’ššŸ”‹ means: The miners will only be active during daytime. To get as close to 100% renewable mining as possible, Home Assistant is trained to only activate the S9s if there's enough excess power, as we don't want to run the miners with power from the grid (which is not šŸ’Æ renewable...).

šŸŒ¤ļøOn a day in February with a mix of clouds AND sunshine the activity graph can look like this, screenshot is from January:

So even with such a big PV it is not possible to maintain 100% uptime of your miners during winterdays, if you want them to run on 100% renewables...

But there are good days in winter, too, right? Yeah, of course. But those days look like this, and now I expose myself as a blatant liar! 25th February:

You can see it. It’s not 100% green mining. There are peaks of power imports that I don’t care about, when they take less than a minute. Deal with it, Greta!

Key-Lesson of this whole Note?

For all of you dreaming of S9 miners powered by 2*300Wp panels: it will only work with direct sunlight ā˜€ļø and good angles. Cloudy weather šŸŒ¦ļøā˜ļø means downtime or grid import...

Here's part #4 of this thread in case you missed it:

#[0]

Worked for me this morning.

But somehow I can't tag other users anymore while working a note... Amethyst that is.

If you're able to gather this data in a way that the user doesn't notice it, I've got another idea:

Would it be possible to compare your own follower list to the follower list of another user in the moment you have to decide wheter a boost is helpful at all?

Background:

Sometimes I see the same note boostet again and again and get the feeling that half of these boosts are sent to >90% of the same followers.

Clients could prevent showing the same note boosted again and again within maybe 10 minutes, but that would be just another first aid kit...

gotta make ends meet when you're inventing stuff ahead of its time...

šŸ˜„ come on, let the Damus folks have some fun. They've just started zapping this morning! ⚔