Bitcoin Mini-Barn Mining Farm Part Two: Construction

Where do I begin?

First of all, this is part two, so if you haven’t already, then read part one here. This is a series of blog posts where I write about my experiences building a custom mining farm in a shed in my backyard. In part one, I explained most of the planning that went into it, and this post is going to be about the construction of it. Some pictures from this will overlap with parts 3 and 4, because we didn’t do the whole thing at once, and worked on other parts in between.

Just to clarify- The captions are above the pictures, so if you read a caption, look below it for its corresponding picture.

Some quick vocabulary

I know, I know, vocabulary? Nobody likes vocabulary, but this will help you understand some of what I am talking about later on.

  • Stud: A long 2×4 piece of plywood that you can buy from Home Depot
  • Sheetrock: The same material your walls are likely made of, used as a barrier
  • Rockwool: This is a brand of insulation that absorbs sound really well

Preparation

To prepare to start construction, my dad and I had to cut all of the wood we were going to use as studs. First, we prepared a cut list (a list of all the boards we needed) and then measured and cut all of the pieces with a Miter Saw. A few minutes in, we realized that we had forgotten to include the doors in the description, but luckily nothing was lost, and we quickly fixed it. After that, we arranged the pieces on the ground to mimic how they would be laid out in the shed and made a few minor adjustments. We drew this rough template on the floor (I’m sorry for the poor picture quality, for some reason I decided to take this at night)

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After we had all of the pieces cut, we screwed them together in the correct shapes and then we were ready to start construction.

Construction

We took the already screwed together studs and screwed them into the shed floor.

This is the first wall: It went up against the shed wall all the way at the end.

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This is the next two walls put in. The small one is a spacer for the door, and the large one is the wall that separates the hot and cold rooms. The miners will be pressed up against it.

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Next, we installed the door to the cold room. This door swings outward, which is necessary because if it swung inward, it would hit the miner racks and not open.

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Then, we put in the miner racks, just to make sure it would fit. It did, but just barely, and we had to temporarily take out the electrical box to make it fit. We took it out after because it would be really hard to work with it in there.

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We then put in a door leading into the hot room. This in swings into the room, because it gives us a little bit more storage room in the hallway. This is the view from the hallway.

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We took some measurements and cut out two pieces of drywall, which we screwed onto the wall separating the hot and cold rooms.

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Next, we put in the studs for another wall. This one separates the cold room from the outside. There will also be a fan pressed up against this one.

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We needed a way to drill evenly spaced holes in the wall (the wall separating the hot and cold room) so that the miners could blow air directly into the hot room. We accomplished this by creating a jig. I started out by tracing the outline of an S9’s fan directly onto a piece of wood.

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We then did a little bit of math and measurement and determined how big these “spacers” needed to be. We cut out the pieces of wood and put them together.

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Then, we screwed some scrap pieces of wood to the back to hold all of the pieces together and drilled a hole in the exact center. If you still haven’t figured out what we are doing here, this will act as a measuring tool for where to drill the holes for the miners’ fans. We put the jig onto the shelf and put a dot where each of the holes are.

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This is what the wall looked like before we drilled holes into it.

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This is the wall after I drilled two holes. We used a very powerful drill with a massive circular bit on the end, which let us drill the exact right diameter for the fans to blow through.

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This is what it looked like after drilling all 35 holes. If you notice, it got really messy.

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This is every piece of drywall that I cut out stacked up.

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After that, we put doorknobs on the doors.

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We needed a way for air to flow freely into the shed, so we ripped out the back wall and a section of the side wall and then covered them in a rubber screen-type thing. The side wall is for air to come in, and it is right next to where the fan is. The back wall is for hot air to escape the shed. The first two pictures are of the intake, and the third is of the hot room.

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After that, we spent many night wiring up the electrical stuff, but that will all be explained in Part 3. Once we were done with electrical stuff, we put this wall on. This separates the cool room from the outside. The massive round black thing you see in the side is the fan we are using to blow air into the cold room. It has a 1HP (Horsepower) engine, two modes (high and low), and it can blow 10,000 CFPM (Cubic feet per minute) on low, and 17,000 CFPM on high.

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This is the stand that the fan will rest on.

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After that, the construction was basically done, and after installing the miners, we realized that we needed an additional way to quite the sound, because it was really loud and we wanted to keep it quite. (As as am typing this post I went out to the shed and took most of the coming up pictures)

This is the hot room before we put any miners in. You can see that we started with pink fiberglass insulation.

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This is of the hallway. We soon realized that Rockwool absorbs sound much better than fiberglass insulation, and that was our main goal, so we started using only Rockwool from then on.

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This is the hot room, and you can see the miners fans poking out.

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This is a view of the hot room from one of the holes we cut for the miners and the floor of it.

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This is the door from the inside.

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Even the ceiling was covered in insulation.

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If you remember from Part One, I said that we needed to fit our riding lawn mower into the shed, so here it is. It fits perfectly, with close to no room to spare. That’s what I call good planning.

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This a contraption that we put on the fence right next to the hot room vent, so that if we have air blowing out of it at high speeds, it will not make a ton of noise from hitting the wood of the fence.

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Security is important, so we put two padlocks on the front, each with a different combination so that it is very difficult to get in without knowing the combination.

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That’s all for Part Two

If you are still here after that massive post, then thank you. I apologize that it took so long to get this out, and I will get Part 3 out sooner than I did this one.

If you want to get an update on how Part 3 is coming along, follow me on Twitter @BitcoinboyBlog. If you have any comments or questions, tweet me or leave a comment on this post.

 

-Bitcoinboy

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