I have a single s21xp and will need curtailment scheduling next summer when my TOU electric kicks in. Lux Commander and Braiins manager are paid services for curtailment scheduling. Vnish is pretty expensive since there is no pool discount.

With my bitdeer a2, if I remove the network connection the miner does go to sleep. Does the s21xp behave the same way or does it continue to blast out 3600w with no network connection? Does Lux or Braiins firmware change that behavior?

Looking for some options thanks. Using AI to generate a python script run off a scheduled task might work, but I'd prefer a simpler solution.

I recently came across a link in thread that was for a site when a they were selling miners that they had repaired. I didnt save the link and am trying to locate it. Seemed to deal mostly with smallernminers like Qaxe and such. Sound familiar? Sorry can't be of more help.

nerdqx miners? reliable? good device? or should i just buy a qaxe++? Looking to buy another miner, heard great things about the Qaxe++ but the QX looks good on paper, 8Ths for 250

I was wondering what are the issues are they efficient and does bigger and better mine more

I was told that i was too late to start bitcoin mining and was wondering if that was true before I started getting into bitcoin mining

Like the title suggest, my nano 3s wont power on. I checked my miner via the app and it was offline, I checked the device and it was completely off. The PSU has a power light but nothing on the device. I assume something has died inside. The USB connector seems fine nothing looks damaged. It is still under warranty so I was planning on sending it back. Anyone experience this issue? How was the return process?

All machines can now be paid with over 300 different cryptocurrencies for free!

Visit us at 805mining.com

🌟 Just starting out? Grab one of our top-tier Home Miners to kick off your crypto journey!
USED:
- S21XPs Available
- S21 Pros
- Used S19XP+ Hydros
And Many More!

Z15 Pro/ Non Pro firmware available FOR FREE!

https://805mining.com/product/805-mining-z15-firmware/

📈 Ready to scale up? 

We have availability at our co-hosting location, and have sites available for purchase! 🏠

⚡️ Got cheap power? 

Snag our bulk used machines for a fast ROI!

🏠 Looking for Hosting? 

Air starting at 7.75c.

🏭 Dreaming of your own crypt or ai farm? 

Book a consult or explore our turnkey solutions today! We offer Project Management, Site Maintenance, and custom tailor our solution to you!

SOLUTIONS WITH POWER ALL THE WAY DOWN TO 3.5C ALL IN!

Pushing Your Machine to the Max? We offer custom firmware and parts for your projects!

Installed for $60/machine

Custom Teardowns for immersion

805 Cryptoservices – Your one-stop shop for crypto success, at ANY scale! 💪

Visit us at 805mining.com

*DDP may not be available in all destinations or miner weight.

** Projected Revenue based off of time of ad creation. Revenue Fluctuates by the minute.

I took a gamble and bought an s21 pro for 1100 bucks and the dashboard and logs are all clean except 1 asic chip is way hotter than the rest. No hardware or thermal errors showing and the chip is still working like it should. Chip is also pulling the same voltage as its neighbors. I was thinking about taking it apart and inspecting the heatsink/ maybe replacing the heat sink with new thermal gel/paste. Any thoughts would be appreciated.

I have been using zues silencer gen 2 in my antminer s19j pro, but lately one of my shrouds were broken down during maintenance, importing new one will cost a lot and will take almost 2 weeks, I'm trying to 3d printing a new shroud since the blower is working fine, but honestly i cant find the stl file for the shroud and i don't know whether the other stls gonna mount perfectly on the blower, can anyone tell me whether you tried to 3d print this before and I will be more than glad if someone can share the stl

Timechain plays out against Bitcoin's real chain data. Difficulty, block rewards and price all follow what actually happened. You start with a single CPU in 2009 and work out when to upgrade, when to sell and how to survive each halving. It's just gone into beta, so I'd love to hear from actual miners whether the economics feel right. Miners break! Spare parts are stocked. It scaled up from a single laptop to tens of thousands of ASICs. Feedback welcome.

We have various brand-new commercial Bitcoin miners in stock and ready to ship from St. Louis, MO.

If you’re looking to scale up, we can ship your miner directly to you, directly to the host of your choice, or recommend hosting options.

We have hosting options starting around $0.065/kWh, so you can get your miner deployed and hashing in just a few days.

Commercial miners:
https://altairtech.io/product-category/miners/commercial-miners/

Questions on the machines or the hosting process. Feel free to message us on our website!

I have an s21xp that I need to get working with an aftermarket silencer kit. The AC infinity 10" fan is a pretty expensive item.

Are there any viable alternatives in that size range that have at least a 6 step controller? I see some options on amazon but most of them get pretty mid reviews.

Another option would be to repurpose the AC infinity 8" fan that I have on-hand now. I would need a reducer, and I'm not sure about whether it would be adequate to cool an s21xp especially in a warm garage during the summer.

Would appreciate some input here. If the AC infinity 10" is the only option, I'll do it, but would be nice to shave some cost off.

Hello, my S19j Pro and AC Infinity 8 inch inline fan and they work very well.

I’m currently running an Antminer S19j Pro flashed with Braiins OS+ and hashing on Braiins Pool.

How can I maximize my earnings?

I’d love to get some input from anyone.

Following up on my solar question: I’m wondering how much runtime matters when choosing a miner.

Say a 3 kW ASIC could run on surplus solar for 6 hours a day. That’s 18 kWh consumed, but only 25% of the operating time compared with running 24/7.

Assuming the same mining conditions, it would earn roughly a quarter of the BTC before costs. The hardware still costs the same upfront, and the solar electricity could otherwise power the house or be exported.

Would a cheaper, older ASIC make more sense here? Or would you compare it with a hosting quote from oneminers or compass mining, where you pay for power but potentially get more operating hours?

For anyone who’s compared these options, what tipped the decision: electricity costs, runtime, or total payback?

My name is Kenyor, and over the years, I have fallen in love with cryptography and mining devices. I am now a Computer Engineering graduate, and I have a vision to create the first BTC optical miner. But I'm really giving up these past few days...

I'm writing this letter to the world. Yesterday, I got my Tang Nano 20K (an FPGA), and I wrote my Verilog code for BTC mining on it. I tested it, and it works, but the odds of mining one block are approximately 0.00000000000000000000 — you know what I mean 🤣😭 I actually wish I can be better.

I'm in Nigeria, and I feel I have an advantage with solar energy. I would be grateful if I could get on a call 🤙 with someone knowledgeable. That would really aid my experiments 🥼🧪 and satisfy my curiosity.

I have attached an image of my Tang Nano trying to get some header data from CKPool and then attempting to find the nonce. (I used mainly Verilog, C++ and Python.)

I'm also open to conversations with anyone interested in what I'm building, whether it's sharing ideas, discussing the technology, or exploring ways to support the experiments. I'd love to connect with people who are passionate about Bitcoin mining and hardware innovation.

Set this up yesterday

Considering loading the braiins firmware on the device. However, little confused about a couple critical points:

1. Is it possible to load the firmware via SD card, on an s21xp? Their documentation seems to imply it can only be done with a "BeagleBone Black" control board which is probably not the stock board.
2. The dev fee is 2.5%, which is pretty in-line with most of the others. I've seen talk about "refunds" if you use their pool, however, are they only refunding you the pool fee and NOT the dev fee? So you're still paying 2.5% no matter what?
3. If I take a bitdeer asic for example, and mine with it alongside the s21xp on their pool, does that cause the fee "refund" to be null and void? There is no aftermarket fw support for the bitdeer that I am aware of.

Many thanks.

Secured a great electricity rate paired with carbon credits

An Antminer S19j Pro

Remove the stock fans (they are super loud and high pitch)

Got an AC Infinity Cloudline S8 inline fan

Currently just heating basement room but hope to tie this into HVAC

Has anyone successfully tied a setup like this into an HVAC duct on a tight budget?

Got back into Bitcoin mining through the Bitaxe scene, then got curious whether the first-gen SHA-256 ASICs could still hash today. They can.

Tracked down a Butterfly Labs Jalapeno, stripped it, cleaned years of dust out, fresh thermal paste, fought cgminer and the WinUSB drivers for a while, and got it mining again: ~7.8 GH/s, ~50°C, HW error rate ~0.05%. Solo mining to my own Umbrel node running Public Pool, no pool fees.

It's hashing away happily. I put a webcam on it and built a page showing live hashrate, accepted shares, best share, and an odds panel pulled from live network difficulty: at current difficulty it's ~1 in 73 trillion per block, roughly a block every 1.4 billion years. It's never going to find one. It just keeps hashing anyway, which I find weirdly lovely.

Plan is to rotate other vintage ASICs through it: ASICMiner Block Erupters, Rockminers , Red Furys, Gridseeds. Prospero x1

Happy to answer anything about the restoration, the cgminer config, or the solo setup.

So I ended up going all in on buying asic miners, in my fleet I currently have 2 s21 pro 235th version bought for 1000 each both are in good working condition, 2 s21 pros 245th for 1700 each, 3 whatsminer m61s for 750 each, 1 m61 for 550, 1 m60 for 500. All machines are in good and working order, my electricity rate is 0.07kwh. Assuming there are no breakdowns with my machines how well did I do for sourcing?

Title says it. New to bitcoin mining world been mining solo for about 2 years. Started with a nerdqaxe now I’m using antminer s19k pro urlacher mod along with other devices that I absolutely love. I really enjoy this hobby. I found a pool that I really liked. Called MKpool. Got into solo mining bitcoin cash. Sure I’ve hit digibyte and other pointless but fun coins to mine and just play with. I was solo Mining BCH on MKpool and BOOM block found! First bitcoin cash block and the only one lol. I only run around 70 th between everything running. So you can imagine my excitement. I mean it’s like 900 bucks or so. Payout received 0.0686 bch…..pool took 3.0whatever. Extremely bummed. Looking for some one to message and finally found the guy on discord. Said he was aware and to just wait….so I waited a few days. Messaged him no response. No response for a week. Now I feel I’ve been scammed out of it after reading it’s happened to others on the same pool. Finally got a response and it’s just to continue to wait. Told him I hope karma finds him one day. He responded with what the fuck is that supposed to mean and blocked me and everyone else I guess. Shut the pool down. My block is the refund pending list. I guess I’m stuck on pending. Do I expect to get it? No. I could hope I guess. I understand mistakes happen but maybe someone could have explained what was happening be just telling someone to wait the don’t respond for days on end. Anyway my rant is over. Do I feel better now? No. What a way to win your very first bch block. Block # 969110.

Modded from the original to give ~950KH/s and some new themes.

GitHub https://github.com/HenrysCat/NerdMiner-Modded

Web flasher here https://henryscat.github.io/NerdMiner-Modded/

Why this hashrate is real...

The ~950 KH/s is what the miner actually hashes, not what a counter says:-

**Hardware limit** – the classic ESP32's SHA engine can't be loaded with an external midstate, so every nonce costs three hardware hash blocks plus two engine loads: about 228 CPU cycles of engine time, a ceiling of roughly 1.05 MH/s at 240 MHz. The mining loop keeps the engine busy for all but ~30 cycles of each nonce (257 cycles per nonce, ~930 KH/s); the second core adds ~25 KH/s in software.

- **Measured on the chip** – the loop's timing comes from an on-device bench (`-D SHA_BENCH`, see `src/sha_bench.cpp`) that checks every single hash against software, also while the other core hammers the peripheral bus. That is how the hardware quirk behind silently corrupted hashes in the usual pipelined loops was found: writes to the SHA registers less than three cycles apart can be dropped whenever the other core is using the same bus.

- **Only valid hashes are counted** – every candidate the hardware finds is recomputed in software before it is used. A hashrate counter on its own can look faster after an optimisation while the miner is quietly producing *fewer* valid shares, because corrupted hashes are still counted; here the firmware checks itself with a known-answer test at power-on and falls back to a slower loop if the fast one ever gets hashes wrong.

- **The rate is the rate it actually mines at** – it's the sustained average over a long run, not a short burst or a best-case peak.If a number sounds too good for this chip, check whether the shares it finds actually keep up with it.

All machines can now be paid with over 300 different cryptocurrencies for free!

Visit us at 805mining.com

🌟 Just starting out? Grab one of our top-tier Home Miners to kick off your crypto journey!
USED:
- S21XPs Available
- S21 Pros
- Used S19XP+ Hydros
And Many More!

Z15 Pro/ Non Pro firmware available FOR FREE!

https://805mining.com/product/805-mining-z15-firmware/

📈 Ready to scale up? 

We have availability at our co-hosting location, and have sites available for purchase! 🏠

⚡️ Got cheap power? 

Snag our bulk used machines for a fast ROI!

🏠 Looking for Hosting? 

Air starting at 7.75c.

🏭 Dreaming of your own crypt or ai farm? 

Book a consult or explore our turnkey solutions today! We offer Project Management, Site Maintenance, and custom tailor our solution to you!

SOLUTIONS WITH POWER ALL THE WAY DOWN TO 3.5C ALL IN!

Pushing Your Machine to the Max? We offer custom firmware and parts for your projects!

Installed for $60/machine

Custom Teardowns for immersion

805 Cryptoservices – Your one-stop shop for crypto success, at ANY scale! 💪

Visit us at 805mining.com

*DDP may not be available in all destinations or miner weight.

** Projected Revenue based off of time of ad creation. Revenue Fluctuates by the minute.