This piece is part of a series that features interviews with Bitcoin miners about their experiences setting up and scaling mining operations, as well as their views on the direction of the mining world. If you are mining Bitcoin and want to share your knowledge and story — the ups, downs and innovations — reach out to the author on Twitter @CaptainSiddH. I met my interviewee for this piece, @TechEngineer21, because he reached out!
For this interview, TechEngineer21 went over his simple yet powerful home heating system. I hope this system can be an inspiration for hobbyists, since it doesn’t require a big budget or sophisticated knowledge and tools to assemble yourself. With just three S9 miners, TechEngineer21 no longer needs to use his gas furnace to heat his home. He shared a mountain of data collected by his smart home system and a full walkthrough of how his heater operates. You can find TechEngineer on Twitter (@TechEngineer21) and YouTube (Tech Engineer).
Thanks for joining us for this series on home mining! I’ve followed you a bit on Twitter where you’re sharing your mining setup. Can you walk us through the steps you took to design and build the Bitcoin miner-based heating system you have now?
It all started back in 2017 when I was first considering buying a miner. I was living in Colorado at the time, and I knew this thing would make a lot of heat and use a lot of energy. I wanted to somehow harness that heat to heat my house. Originally, my plan was to put the miner in the basement and have some ductwork going up through the vent and into my house.
I never ended up getting the miner back then, just because it was hard to get them at that time. But that idea stuck in my head: If I mine, I want to somehow harvest the waste heat so that I’m not just consuming a ton of energy for maybe a little bit of profit. 2020 came around and I wanted to get back into this. The perspective of helping secure the Bitcoin network as a whole was newly implanted into my mind around this time as well.
I started sketching out an airflow diagram on the whiteboard. I work in data centers a lot, so I knew about the concept of a hot and cold aisle. Translating that idea to my home, I would pull in cool air through the miners and then spit it out into a hot aisle; in this case, my home. I just needed to figure out a way to enclose the miners in something and then push or pull air through it.
I designed a box around three Antminer S9s. I chose S9s because they’re affordable, and I could get them. I wasn’t ready to make a commitment of $10,000 to $30,000 for S19s. Once I finished the box, I ran the miners in there with an extra fan — and they ran well. I put that box up in my attic and connected it into my ducting. I had it working manually, so I’d have to take it off manually when the house was hot and put it back on when I needed more heat.
The box with three S9s tucked inside, grafted into the home’s ducting. Source: TechEngineer21.
In my whiteboarding, I also sketched out a way to control this airflow. I knew I needed a valve of some sort to change the intake and exhaust for the miner box. At first, I was looking for something like a butterfly valve. Turns out those are for hydraulics, and they’re really expensive. Finally, I stumbled upon these dampers which run on 24 volts, the same as my thermostat’s output. Perfect. Now, the miners are stage one of my heater, and the thermostat puts out a 24 volt message that changes the dampers to control the flow of air.
The attic intake with damper control module shown. Source: TechEngineer21.
I love your setup because it’s ingenious and simple. Reusing heat from home miners can get pretty complex pretty fast, but your setup is simple yet very practical. You have a box, a thermostat and some dampers. What was your process to find and buy the miners that you’re using?
I bought them on eBay. I looked at Bitmain and other websites, but I was never able to get a hold of a machine directly from any manufacturer. I’d also kind of done some research on the profitability of miners and I knew that S9s were just barely at the breakeven point. Here in Nevada where I’m at, the electricity rates are extremely low. And I’m also on a special electricity plan that makes electricity about 7 cents a kilowatt hour. That makes a big difference. Otherwise, profitability would be a completely different equation.
With S9s treading along the borderline of profitability, I knew that if I could make them work as a heater, that would change the profitability calculation. I’ve got some data now, so I can see that my miners are borderline above profitable — before considering savings on the energy bill. I’m basically getting my miners to heat my house for free while maybe making quite a bit more depending on the price of bitcoin. Who wouldn’t want to heat their house for free?
I want to go back to the power cost you mentioned. Can you walk through what agreement you have with the power company and how you got that?
It’s called “time of service billing.” They have it here in Nevada and possibly other places around the country. What they’re doing is incentivizing less usage of electricity during high demand times — think between 1:00 p.m. and 7:00 p.m. during the summer months.
Normally, the energy price here is around 12 cents per kilowatt hour year round. With time of service billing, electricity during that peak time window in the summer costs me something like 45 cents per kilowatt hour. However, during the rest of the year, they will sell you power at around 7 cents per kilowatt hour. As long as you’re willing to figure out how to reduce your energy load during the peak demand or shift that consumption to low demand times, you can save a lot of money.
Cities need to offer programs like this because they don’t want to build a new power plant just to be able to power that one time frame, from 1:00 p.m. to 7:00 p.m. over the summer, when everybody is running their AC. Cities and power companies thus try to incentivize the stabilization of the power grid over time by offering this variable pricing. I discovered this program in my area when I was getting solar power with battery backups installed. In my case, I’m able to actually sell power back to the grid during that peak time, so I can really make it work to my advantage.
So, I have to ask: How do you get by having AC in the summer? Do you just go without it, use solar power or pay the higher energy price?
What I do is pre-cool my house until 1:00 p.m. by setting the thermostat a bit cooler. The house will stay cooler for a while as the temperature outside rises. If the AC is needed, I have the batteries that kick in. From 1:00 p.m. to 7:00 p.m., I use zero power from the grid, and actually sell back power from my solar panels.
I’ve heard you use the phrase “double spending your energy.” Can you walk us through the numbers on your energy bill and show how much money your miners are saving you?
Absolutely. First off, let me start with this: double spending my energy bill comes from the fact that when you’re using electricity, 100% of that electricity gets turned into heat, all the time. It doesn’t matter what it is. It doesn’t matter if it’s a light bulb, or your refrigerator or your TV monitor. All that electricity that’s consumed in your house will end up as heat in your house. I didn’t know that for a long time.
If it’s a 6-watt bulb, it’s a 6-watt heater. That’s where double spending comes from, because it’s 100% efficient. You’re getting bitcoin and then you’re also getting all the heat.
The data from my Ecobee smart home device shows the capability of three S9 miners to heat my home. This graph (below) shows a month of data. You can see the temperature spikes, the highs and lows of each day. The lowest we ever got to was about 28 degrees. The miner heating system kept the house at the setpoint, with my main furnace running only a couple of hours throughout the entire month. Actually, that’s because I hadn’t quite tuned the system correctly.
Purple line is the outdoor temperature, while the many lines above record the temperature within individual rooms of the house, as well as the thermostat programmed temperature (blue). Source: TechEngineer21.
As for the financials, I do have an Excel spreadsheet of my numbers here that I can show. I took the overall energy used during the same time period in different years. Last year — when I wasn’t doing any mining — I used 1,100 kilowatt hours. This year with miners on, I used almost 5,000 kilowatt hours. I calculated the cost to run my three Antminer S9s based on 24/7 operation, which came out to $253. My total electricity bill last year was just $77, versus $348 for this year with $270 of that due to the miners. However, my natural gas consumption is down from 64 therm to 24 therm this year, decreasing costs there.
I also mined 0.0077 bitcoin in that 31 day period. Taking that, times $43,000, which is around the current price today, gives me a fiat equivalent of $335. Subtract that from my energy bill, and I’m looking at just $32 in costs for the entire month. Last year, the total energy bill came out to $134, so I had a total savings of $101 — over 75% cut in my energy bill.
In Nevada, energy costs are extremely low in general. There are a lot of places in the country with higher costs where heating appliances aren’t paying their owners anything. Why wouldn’t you want to switch from electric heating to ASIC miner heating?
Heat reuse clearly works well in the winter. How will your system handle the summer months? Will you need a cooling solution?
My plan tentatively for the shoulder seasons like fall and spring is to reverse the airflow — pull in from the house and vent to the attic. That would work when the temperature is relatively cool, not above say 75 degrees. In the summer, I’ll probably end up just putting the miners in my garage. Nevada is probably the worst testbed for this system to be honest, because it’s the desert, but I was still interested enough to do it. I want to get into submersion cooling next, which has a lot of applications too.
What about noise? Can you hear your miners in the house, since they are connected to your ductwork?
I’d say it’s 98% silent. I can tell it’s on because I know it’s there, but if you didn’t know you’d just think it was a regular heater. It’s not even as loud as the regular heater. The box the miners are housed in cuts a lot of noise, plus the insulation in the attic. The bends in the ducting baffle the sound as well, so not much noise makes it into the house.
Are you considering commercializing your setup as an HVAC heating unit?
I decided just to release my system in a video because the more I thought about it, I didn’t really think it was viable to bring to market yet.
I would like to see this technology brought to non-Bitcoiners, and I feel that collaborating with other people in the space will speed up the development process for the community in general. I definitely am considering some sort of product in the future, but I don’t see the one I built for my own home as a viable product in its current state.
What advice do you have for people thinking about getting into mining?
Do a lot of research. Start with trying to understand how Bitcoin works, how encryption works, the mining process, the difficulty adjustment. I think one of the biggest pitfalls people get sucked into right off the bat is looking at a profitability calculator online. You see an S19 makes $100 a day. That looks amazing, its ROI is like three months. However, these rarely take into account the difficulty increasing over time, or the price of bitcoin changing over time.
Number one is do your own research, but then just jump in. There is little to lose. Have fun with it.
I really appreciate you taking the time to share your home heating system and vision for the future with me. Best of luck with commercializing an even better system!
If you want to reach Tech Engineer, he’s on Twitter @TechEngineer21. He also shares a breakdown of his entire heating system build and data he collected on his YouTube channel.
This is a guest post by Captain Sidd. Opinions expressed are entirely their own and do not necessarily reflect those of BTC Inc or Bitcoin Magazine.
Disclaimer: The information provided in this article is for informational purposes only and should not be construed as financial or investment advice. Cryptocurrency investments are subject to market risks, and individuals should seek professional advice before making any investment decisions.
The founder of the decentralized exchange, dYdX, asserts that individuals involved in cryptocurrency development should direct their efforts toward international markets beyond the United States for the upcoming five to ten years.
Antonio Juliano conveys to his audience of 49,400 on the social media platform X that the prevailing regulatory uncertainty within the United States does not merit the associated challenges or concessions.
Juliano contends that it would be more prudent for cryptocurrency developers to establish their products in alternative countries and subsequently re-enter the United States from a position of strength.
“Cryptocurrency developers would be well-advised to temporarily discontinue catering to the US market and instead seek re-entry in a span of 5-10 years. The complications and compromises involved do not warrant the endeavor. Moreover, a substantial portion of the market exists overseas. It is recommended to innovate in those regions, ascertain product-market fit, and then return with greater bargaining power…
The paramount objective shared among all stakeholders is to secure a significantly more potent product-market fit for cryptocurrency. The pursuit of a robust product-market fit does not necessitate flawless distribution. A multitude of substantial overseas markets present avenues for experimentation.”
Juliano articulates that advocating for more amiable cryptocurrency regulations demands time, although the process could be expedited if developers manage to introduce products that elicit consumer demand.
“However, this perspective does not undermine the importance of efforts to influence US cryptocurrency policy. On the contrary, such endeavors are absolutely vital. Given the protracted timeframe required (in anticipation of re-entry), and considering that much of the world takes cues from the United States, it becomes evident that our progress in shaping policies hinges upon achieving global-scale product usage.”
The dYdX founder proceeds to emphasize that, with time, American citizens will come to realize that cryptocurrency is inherently aligned with US values and principles.
“The tenets of cryptocurrency closely align with American values. What concept could be more quintessentially American and reflective of capitalist ideals than a financial system conceived for the people, driven by the people, and answerable to the people? This, indeed, constitutes the very essence of our endeavor.”
Disclaimer: The information provided in this article is for informational purposes only and should not be construed as financial or investment advice. Cryptocurrency investments are subject to market risks, and individuals should seek professional advice before making any investment decisions.
Bloomberg Intelligence’s senior macro strategist, Mike McGlone, is conveying a pessimistic outlook for Bitcoin (BTC) in the immediate future.
During a recent interview on Kitco News, McGlone underscored that Bitcoin is currently displaying bearish signals even amidst the ascent of other high-risk assets.
“In the event of a downturn, adhering to a rule prevalent in bear markets, resources across the board could witness a reduction in value, and Bitcoin will not be an exception.
A crucial observation is the necessity for Bitcoin to exhibit divergent strength at a certain juncture, akin to the behavior of treasury bonds and gold in a deflationary economic environment. Regrettably, this pattern has not materialized.
After attaining its peak towards the conclusion of Q1, reaching approximately $31,000, driven by optimism and the influence of exchange-traded funds (ETFs), Bitcoin subsequently retraced to $25,000 or approximately $26,000. Presently, it is manifesting divergent weakness in contrast to the concurrent upsurge in the stock market.”
According to McGlone’s analysis, the ongoing “economic reset” implies a continuation of Bitcoin’s recent downward trend, although he anticipates that the premier cryptocurrency will ultimately attain a six-figure valuation.
“While I believe that Bitcoin will eventually achieve a valuation of $100,000, the onset of a global economic reset, as I anticipate, characterized by a standard deflationary recession leading to a decline in the housing and stock markets, analogous to the conditions of 2008—though arguably exacerbated due to the ongoing removal of liquidity from the system—Bitcoin’s role as an influential precursor comes to the forefront.
This underscores my point that Bitcoin has recently been taking on the role of a harbinger of trends. Its value ascended briefly to around $31,000, only to subsequently trend downwards. From my perspective, it serves as a leading indicator for a majority of high-risk assets.”
As of the time of writing, Bitcoin is trading at $26,079.
Disclaimer: The information provided in this article is for informational purposes only and should not be construed as financial or investment advice. Cryptocurrency investments are subject to market risks, and individuals should seek professional advice before making any investment decisions.
Shiba Inu’s (SHIB) Latest Layer-2 Scaling Solution Nears Public Relaunch Following Recent Technical Challenges
Shytoshi Kusama, the enigmatic lead developer behind the SHIB project, has shared in a recent blog post that significant progress has been made in addressing the technical setbacks that temporarily halted the operation of Shibarium, SHIB’s new layer-2 scaling solution. The initial release of Shibarium encountered network issues that prompted its temporary closure. However, Kusama assured the community that diligent testing and parameter adjustments have led to notable improvements.
Kusama elaborated, stating, “After extensive testing and parameter refinements aimed at achieving a ‘ready’ status, Shibarium has undergone enhancements and optimization. While still undergoing testing, it is now successfully producing blocks.” Additionally, to prevent a recurrence of the past network overload, Kusama revealed the implementation of a new monitoring system and supplementary fail-safe measures. These include rate limiting at the RPC (remote procedure call) level and an automated server reset mechanism in the event of another surge in traffic.
With these advancements in place, the team is on the verge of reopening Shibarium to the public. As part of this progression, more network validators will be integrated into the ecosystem on August 23rd. Kusama emphasized the significance of this step, remarking, “Tomorrow, additional validators will become operational, expanding the options available for staking BONE. This will allow for a distribution of rewards earned through their roles within our community. As testing concludes, we will once again prepare for public utilization.”
Shibarium’s previous technical difficulties were attributed to an overwhelming influx of users and transactions during its initial launch. As of the current writing, SHIB is trading at $0.00000798, marking a 0.4% increase over the past 24 hours.
Disclaimer: The information provided in this article is for informational purposes only and should not be construed as financial or investment advice. Cryptocurrency investments are subject to market risks, and individuals should seek professional advice before making any investment decisions.
FTX’s co-founder, Sam Bankman-Fried, is currently seeking a temporary release from incarceration. The purpose behind this endeavor is to engage in collaborative strategizing with his legal representatives within the confines of the federal courthouse situated in Manhattan.
In a formal letter dispatched to US District Judge Lewis Kaplan on a Friday, Bankman-Fried’s legal team expounded that their client’s capacity to effectively scrutinize the extensive legal documents pertaining to his case has been significantly curtailed during his time spent incarcerated at the Metropolitan Detention Center (MDC) in Brooklyn.
Christian Everdell, the attorney representing Bankman-Fried, divulged that the government recently disseminated a voluminous three-quarters of a million pages of Slack communications. These were originally due several months prior. Expressing the urgency of the situation, Everdell articulated, “Only last week did the government furnish an aggregate of approximately seven hundred and fifty thousand pages of Slack communications that were originally stipulated for release months ago. Given the current timeline, it is a futile endeavor for Mr. Bankman-Fried to endeavor to review these materials.”
He underlined the pivotal necessity for Bankman-Fried to collaborate meticulously with his legal team, emphasizing his dire need to avail himself of an internet-enabled laptop within the courthouse premises. Such a resource would undoubtedly expedite the process of comprehensive document review, an imperative undertaking in light of his impending fraud trial scheduled for the forthcoming October.
In riposte to Bankman-Fried’s plea for reprieve, the prosecuting body voiced apprehensions regarding his adherence to the prerequisites concerning his planned defense strategy. Notably, they underscored that Bankman-Fried is yet to furnish the complete gamut of essential information regarding the counsel upon which he predicated his actions.
The prosecutors proffered caution that unless Bankman-Fried promptly discloses the minutiae regarding the counsel he received and the provenance thereof, any attempt to interject such a defense during the trial should be summarily proscribed.
Although the prosecutors extended an offer to facilitate the transfer of documents onto hard drives for Bankman-Fried’s perusal within the MDC premises, a viable laptop-based solution was deemed unattainable. Initially, the notion of relocating Bankman-Fried to a more compact, upstate correctional facility where he could access an internet-enabled laptop was contemplated by the prosecutors. However, this proposal was met with resistance from prison officials.
Regarded for its starkly onerous conditions, the Metropolitan Detention Center has cultivated a notorious reputation among its inmate population.
Bankman-Fried’s Incarceration Stemming from Unsanctioned Internet Utilization
As documented, Judge Kaplan sanctioned the re-imprisonment of the beleaguered cryptocurrency luminary, citing alleged instances of witness tampering.
In that juncture, Judge Kaplan pronounced that a strong prima facie case existed indicating that the accused had endeavored to tamper with witnesses on no fewer than two separate occasions.
The decision was additionally influenced by Bankman-Fried’s unsanctioned use of the Internet while released on bail under the guardianship of his parents at their abode located in California.
Judge Kaplan discerned that Bankman-Fried had indulged in excessive communication with various individuals via electronic correspondence, even resorting to the utilization of a virtual private network.
Concurrently, the disgraced progenitor of FTX is simultaneously grappling with novel allegations brought forth by the Department of Justice (DOJ). These allegations encompass the misappropriation of customer deposits, including the purported embezzlement of said funds.
An indictment filed on the most recent Monday delineates that Bankman-Fried stands accused of diverting and embezzling customer deposits from the FTX platform. The illicitly obtained funds were purportedly channeled towards political campaign contributions, collectively amassing a substantial sum exceeding one hundred million dollars, in advance of the 2022 US midterm elections.
The indictment further posits that despite Bankman-Fried’s intimate knowledge of FTX’s fiscal insufficiencies, he continued to channel the purloined funds into personal investments, acquisitions, and political campaign contributions.
Disclaimer: The information provided in this article is for informational purposes only and should not be construed as financial or investment advice. Cryptocurrency investments are subject to market risks, and individuals should seek professional advice before making any investment decisions.
The U.S. Securities and Exchange Commission (SEC) is taking significant steps towards pursuing an appeal in their recent legal battle against Ripple, indicating a potential shift in the course of the lawsuit.
James K. Filan, an experienced defense attorney specializing in crypto-related legal matters, has shed light on the latest developments. District Judge Analisa Torres has initiated a structured process for considering the SEC’s request to present an interlocutory appeal—a move that would allow the SEC to contest certain aspects of the ongoing case.
It’s important to note that this preliminary step does not guarantee the authorization of an interlocutory appeal; rather, it signifies that the SEC has been given the opportunity to formally request such an appeal.
Judge Torres has outlined the timeline for this process in her official order. The SEC is expected to file their motion for the appeal by August 18th. Subsequently, Ripple is given until September 1st to submit their opposition papers. If the SEC deems it necessary, they have until September 8th to file a reply.
The news of these developments had an immediate impact on the cryptocurrency market. Following the announcement of the judge’s order, the value of XRP experienced a sharp decline. The price, which had been trading at approximately $0.571, dropped to around $0.499 at the time of writing. This decrease of over 12% aligns with the broader trends observed across the cryptocurrency landscape.
The legal clash between the SEC and Ripple began when the regulatory agency filed a lawsuit against the San Francisco-based payments company in late 2020. The SEC alleged that Ripple had engaged in the sale of XRP without registering it as a security.
In a significant turn of events last month, Judge Torres issued a ruling that had mixed implications for both parties. She determined that Ripple’s automated programmatic sales of XRP, which occurred on the open market, could not be classified as securities offerings—a pivotal point of disagreement between the SEC and Ripple.
However, the judge did uphold a key aspect of the SEC’s argument. She agreed with the agency’s assertion that Ripple’s direct sales of XRP to institutional buyers indeed amounted to a securities offering, reinforcing the complexity of the case.
As the legal battle continues to unfold, the spotlight remains on the actions and responses of the SEC and Ripple, and how their ongoing dispute could shape the future regulatory landscape for cryptocurrencies and digital assets.
Disclaimer: The information provided in this article is for informational purposes only and should not be construed as financial or investment advice. Cryptocurrency investments are subject to market risks, and individuals should seek professional advice before making any investment decisions.