r/BitcoinMining

Instead of stacking Gammas, I built a 30 TH/s Loki Miner for $205
▲ 7 r/BitcoinMining+1 crossposts

Instead of stacking Gammas, I built a 30 TH/s Loki Miner for $205

I used a S19J Pro for the guide above but I wouldn’t recommend using that model instead use a S19XP which will achieve better efficiency and is only a 100 to 200 more for a used one. Came a long from having 10 Gammas to switching using DIY methods with old hardware🤣 Hope the guide helps someone and hopefully more people can come up with mods to help improve the design and push it even more🙏

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u/French-Kiwi24 — 7 hours ago

Isn't DATUM superfluous? Why do I need DATUM?

Can't I just point my and my associates' Bitaxes/ASICS to our single Knots node to provide the template?
Isn't DATUM superfluous?

(p.s. I'm a confused noobie)

DATUM summary :

DATUM enables individuals to validate the network on their own, run their own nodes, and mine their own blocks, all while sharing in the rewards of the pool. This decentralized approach reduces risk and variance for miners while empowering them to construct the blocks they want—making DATUM a key player in the future of Bitcoin mining.

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Is RevolveLabs still around?

Hi! I'm from Argentina and I'm looking for an ASIC repair training course. I've heard that theirs is top-notch, but I sent them an email a few days ago and they still haven't answered. All the info I could gather, even from Reddit, dates back a few years. Also, any info on other closer courses would be welcome!

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u/Afraid-Catch7895 — 23 hours ago

Monster Miner (120V Conversion)

The Monster Miner project was started off simply: Build the most powerful and efficient 120V home miner that exists.

To really understand this project, you have to understand the Avalon Q. The Q is essentially a single-board A15 Pro build. The Monster Miner is the same idea, but with a far superior S21XP hashboard.

The project started out by removing two of the boards. BM1370’s don’t handle underclocking well, but you can easily power (and even overclock a bit) a single board with a 120V PSU. After that was done, 3D-printed baffles were inserted to maintain static pressure and direct the entirety of the airflow towards the remaining board. The power supply is a modified APW12 from an S19K Pro. By adding two resistors to the brown-out detectors on the board, can you disable what typically causes a shutdown when the voltage dips below 200. Pretty easy, just tedious.

Once the PSU is modded, you connect it to the control board with the hashboard still disconnected. Once that’s done you have to figure out internet connectivity, and you’ve got two choices; run Ethernet (the way the Lord intended) or run a wifi bridge which is what I opted to do here. Biggest reason for that was I wanted an apples to apples build with the Q—Q has wifi, so this needed it too. Pretty simple, you just splice in the Vonets cable with the 6-pin Molex and you’re off to the races. This allows you to power the board on, install Lux OS, and enable PSU bypass.

From there, it’s time to hook up the hashboards. The miner won’t actually start hashing until you’ve input a pool, so you’ve got some time to select presets and do a systems check before it ramps up. It was as this point that I realized in all of my excitement, I plugged the fans into the opposite headers, so the intake fans were blowing air in my face. Rookie mistake despite not actually being a rookie. Once I corrected it, I let the miner ramp up, and it quickly proved to be the monster miner I had hoped for.

Reporting 117TH/s, it exceeded the Q hashrate by 24TH/s. It also did so at nearly 200 watts less. I wish Lux’s efficiency numbers were accurate, but they were off by 180w according to the wall plug which reported 1610.

Overall, phase one of the Monster Miner has been a success. Phase two will add quieter fans, a touchscreen control panel, and powercoat to enhance the appearance a bit and make it a bit more monster-like. There’s still a lot of work to do, but I’m already dreaming up the S23-based Monster II. Huge shoutout to the guys at Altair for lending parts and support to make this project a reality. They’ve got a long history of building cool things and supporting others who do the same.

u/karpuzmining — 2 days ago

Bitcoin miners??

Soo im thinking about trying this bitcoin thing out, and i was wondering what is the best bitcoin miner with the highest possible profitability but also the cheapest? Ive seen some people reccomend bitaxe n i googled it but what google gives is all used. Would used miners be good to use or no?? (I have very little understanding but i just need like 1-5 coin that i can to move out of country while i grind money to live)

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u/Cyb3w01ffTTV — 2 days ago

I have a crazy idea…

So I work for this hotel. I live on site as an on call employee. Over the last few months I’ve kind of become so important to the hotel that I can kind of do what I want within reason.

Last week I found a hidden room. I think it used to be a laundry room at one point, but the entrance was quite literally sealed off with a piece of plywood and hidden behind a large shelf. I work alone, so I waited til after midnight and moved the shelf and plywood and went in with a flashlight. That’s where I found 8-10 double 210v outlets. Grabbed a multimeter from the maintenance office and confirmed all plugs are still live.

So here’s my question. How many miners do you think I could realistically get away with powering without a noticeable power bill increase. It’s summer here now, and every room has just started running their AC units. The vacancy of the hotel ebbs and flows between 20 rooms sold, to 100 rooms sold on any given day or night. In my eyes it wouldn’t be TOO noticeable if I plugged 2-3 miners in right??

Noise isn’t an issue because this room isn’t surrounded by guest rooms, and shares a wall with the outside of the building. It’s also in an area inaccessible to staff. I’m not really gonna do this. But god dang if I can’t stop thinking about it.

Before anyone asks. I am the oldest employee here. My manager was just flown in last week and he has no idea how to even use the front desk software, and can’t be bugged to get even come into work for more than an hour a day. We also fired our maintenance man, so no one to worry about there. What do yall think? Bad or really bad idea?

Edit: So I just did some napkin math. A hotel ac/heating unit can use between 2500-5000w. A high end hydro miner would run 5500w max. This is legit just like us booking an extra 5 rooms a night for perpetuity right?? This is starting to seem like a way better idea.

Edit edit: I’m sorry yall, i have no plans of doing this. I just had a really rough shift and one or three more beers than usual and thought this would be a funny post. If you check out my post history you’ll see I just like to get drunk and have fun. While there may or may not be a hidden laundry room, I’m not gonna actually do this. I’m way too appreciative of the opportunities this job has presented me lately and I really like to blend reality into something that makes people laugh. Thanks for attending my Ted talk

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u/Mertgirl — 3 days ago

Whatsminer M30S over voltage situation

There’s a Bitcoin mining farm where we have a 1500 kVA transformer. When it was delivered, the highest voltage it gave us was less than 220, so it wasn’t working for us. The highest voltage it gave was around 210. Now they returned the transformer modified, and now the lowest voltage it gives us is 242. If you switch to tap 2, it gives 247, tap 3 gives about 255, and so on until about 280. So my question is if I can do overclocking on—these are Whatsminer M30S, around 88 terahash average. I want to know how much voltage the PSUs can handle without damaging them too quickly. I know they will wear out using them above 240, but what’s the likelihood of them failing? I have really good ventilation—it’s a container on top of a hill with a lot of airflow, so I’m not worried about temperature. I also have air injectors and extractors if needed, so temperature isn’t my concern. What I’m really concerned about is that the voltage limit for Whatsminer PSUs is 240, and I’ll be running them at around 242. But it could go up to 260 or so. My question is, do I need to raise the voltage to overclock? And will the PSUs handle it, because we really have no way to lower it without sending the transformer back to the plant, and we’ve already lost too much time on this farm. That’s my doubt.

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u/Cocolovegold — 2 days ago

*ASIC setup in South America – cheap hydro power, $50k budget, need hardware recommendations

Hey, looking for advice on building out a small mining operation. I have access to cheap hydroelectric power in South America and a $50k USD budget for hardware and infrastructure.

Main question: which ASICs are the best efficiency/price ratio right now for someone starting fresh? I'm looking at J/TH as the key metric given my low electricity cost (around 8 cents per kWh), but I also want to avoid overpaying for the newest gen if mid-gen units give better ROI at current difficulty and BTC price.

A few specifics:
- Climate is warm year-round, so I can't repurpose heat for anything useful – cooling and ventilation will need to be budgeted for
- Importing hardware to South America adds logistics complexity – has anyone dealt with customs/duties for ASICs in this region?
- At $50k scale, does it make more sense to go all-in on a few high-end units (S21 Pro, Whatsminer M60S) or spread across more mid-range machines for redundancy?

Also open to hearing from anyone who's done the "mine vs. buy spot" math recently at this power rate. Appreciate any input.

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u/Yorgoleusz — 2 days ago

Is the Nano 3S Worth It Under these Circumstances?

Just looking for some insight, I have someone somewhat local to me offering x2 Nano 3S units for under $300 USD total... I'm pretty much looking to solo mine BCH. Would this be a decent purchase? I understand I could go on forever with 0 rewards and that's just the risk of the game..

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u/CraftedDiamond10 — 3 days ago

Fluminer T3 lost password

Hello fellow mining friends, I had purchased a Fluminer T3 110TH unit about 6 months ago and has been running mining BCH. I wanted to make some changes but i forgot my password to the miner via the Web gui. I tried the recessed reset button on the back and held it in until the unit reset but its not resetting the username/password back to default (root/root). any suggestions on how to get back into this thing?

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u/lionamongsheep — 3 days ago

S19 on a regular outlet

Am looking to buy a used s19 First time buying an asic

I wanna know is ok to plug it to a regular outlet

  • If there is a good hosting company that been around for more then 3 years and its trustable feel free to till me
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u/QuickOrganization201 — 4 days ago

Looking for honest experience with ASIC hosting (BitKastl + alternatives for 1 miner from EU)

I’m looking for some real-world advice and experiences from people who are already in ASIC mining hosting.

I own a single Bitmain Antminer S21 Pro 216TH/s and I’m trying to find a reliable hosting provider in Europe (I’m based in Croatia).

So far I’ve been talking to a company called BitKastl.

This is basically how they operate:

* German company (KASTL Ventures GmbH)

* They sell and host ASIC miners

* You can either buy a miner from them OR send your own device

* Hosting price is around:

* ~€0.065–0.067/kWh depending on setup

* external device hosting slightly more expensive (~€0.07+)

* No setup fee (in most cases)

* Monthly billing based on real electricity consumption

* Deployment usually 24–72h

* They offer buyback / resale option if you want to exit

They also told me:

* miner can be hosted in EU / US / Asia locations

* BTC payouts go directly to your wallet via ViaBTC

* they also offer trade-in (sell your miner locally and upgrade)

Link: https://bitkastl.de

What I’m trying to understand:

  1. Has anyone here actually used BitKastl long-term?

  2. How is uptime and payout reliability in reality (not just marketing)?

  3. Are there any hidden costs later or electricity price changes?

  4. Is the buyback option actually real or just “sales talk”?

Also, I’m open to alternatives.

Most providers I found either:

* require you to buy their miner,

* or don’t accept single units,

* or are fully booked.

So I’m specifically looking for:

* trusted hosting providers that accept 1 ASIC unit

* preferably EU or stable jurisdiction

* transparent €/kWh pricing

* no shady profit-sharing schemes

If anyone knows older / more established companies that still accept small setups, I’d appreciate recommendations.

Thanks in advance 🙏

u/Own-Negotiation-2987 — 4 days ago

Antminer cooling device

Hello friends, has anyone tried this cooling system? They say it's good cooling and reduces noise from 75 to 45 decibels.

u/LTC2011 — 5 days ago

Appli de mining en nuage

je recherche un developper avec une bonne connaissance de l'extraction de crypto en nuage ou connaissez vous une appli avec une puissance superieur à mille th/s

Je compte sur vous

reddit.com
u/Logical-One7942 — 4 days ago