Thank you both for the info!

Mining at home has become unsustainable for me due to many factors of the market. If anyone that has cheap/renewable energy would be interested in hosting 5 machines, please PM me and let's talk details. Thank you!

Thanks, I will check it out. I need to do some research on the ramp up/ramp down phenomenon I see mentioned in posts on here as I am quite ignorant of what it means.

I just jumped on the kano band wagon today. I was only getting .01 btc every 4 days with aprox 40 TH/s at slushpool. I'm interested to see what I can average on kano.

Has anyone had any luck ordering replacement boards from this company? I had a hash board in my E9 stop working. I've e-mailed everyone in their support team and tried skypeing a couple of them with no reply. As much as I would love one of their new machines.. if you can't get parts then I can't see buying anything from them in the future. I tried translating my email into Chinese.. let's see how this goes.

You could also log into your router and look to see if the miner is showing up on your network. Also make sure your computer is on the same IP range as your miner. If your computer and miner are connected to the same router, you should be on the same IP range.

I thought about the temperature controlled fan. I like the idea of the fan running at higher speeds if the exhaust temps rise. I'm concerned if the fan will compensate enough if it  is only 1 miner overheating out of 10. I have been doing some testing and I'm using a double pole relay to turn power off to one of my miners if the exhaust temp rises above 113 deg F. I need it since I can't be home to babysit these things all the time. Later down the road I could put smoke or flame detectors on the same relay circuit to kill power.

Hello folks, I am trying to provide the best possible method of exhausting hot air from my miners in my garage. My setup now with inline fans does ok with cool temps outside, but I'm about to increase my miners from 5 to 10. My garage is underneath my home so my foundation comes up to the ceiling except for where the outside door and garage door is. I need a temporary solution for a few months and so I've been considering putting 10 miners in my doorway going to the outside of my garage. Basically I would block my doorway off with thick plywood, and make cutouts for a filter and an exhaust fan. The doorway would be enclosed by walls to try to keep things airtight. I would pull cool air from the bottom half of the door and exhaust the hot air from 10 S9 miners on the top half of the doorway with a 2500-3000 cfm fan. See concept drawing. What are your thoughts? Am I over complicating my design?

 http://i.cubeupload.com/QSeAbU.jpg

Anselal, nice software bud. If you could incorporate some sort of notification by email or sms/text of over temp or under hash speed conditions.. that would be a great tool to have in our pocket. Also, if the miners go above temp, what indication does the webpage show? Do the temps values show up in red, or does it just show a message in info section? I'll send you some bitcoins in a moment. Thanks for the work from you and your team.

You could potentially run it on a 1600 W Power supply as long as it runs at least 90% efficiency. At 80% you would only be producing ~1280W and the S9 needs 1372W. At 90% efficiency you are around 1440W. The EVGA SuperNOVA 1600 Gold runs at 90% and the Titanium at 94%. Higher efficiency power supplies cost more, but you will make up the cost in no time since higher efficiency means the power supply uses less power. They are also safer and should last longer since they don't produce as much heat. In this case you can get away with a 14 gauge power cord as long as you don't consume more than 15 amps on this one circuit and you don't plug anything else but the miner into it.

No, not at all. I have been working in Semiconductor fabs for 20 years. But it depends on how they designed the chips. If you shrink the geometries inside a chip, you do save on power consumption and gain speed. This means you can also fit more transistors inside the same size packaged chip. So the question left is if Ebang/Samsung used the same amount of transistors to shrink the package size of the chips, or did they increase the amount of transistors inside each chip? It is also possible that they increased the clock speed (frequency) of the chips as well. Where smaller geometries produce less heat, you could increase the clock speed to obtain higher hash processing speeds. Either way, putting more chips on the board will require more wattage and so will increasing the clock speed.

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Moderator's note: This post was edited by frodocooper to remove nested quotes.

Where the chips are smaller, they can fit more on the board. More chips = more hashing power, but it also means more power consumption.

Very good info in here. The S9 requires at least 1600W at 220V. If you are going to use two 120 V power supplies, these will need to be at least 800W each, but you may want to go with 900W or higher. A good rule of thumb is to use a higher wattage power supply rather than going lower or you will most likely burn up your power supply and probably the S9 with it.

You want a dedicated circuit for each antminer. This means you have one outlet connected to one breaker in your panel. You do not want any other appliances to be plugged into the same circuit as your antminer or you will most likely trip your breaker or worse.

You could potentially use a 1600 W power supply at 120V. You would need a dedicated outlet for it. As mentioned in another post, you would have to make sure each rail had enough power for a minimum of 2 cards each on the antminer. You may even need adapter cables to have enough connectors for each board.

If you use use two 120 V power supplies, you will want to wire (14 gauge or 20 amps) an outlet to a 15 to 20 amp breaker. You can use the same outlet to power both power supplies since you should only use about 13.5 amps with two power supplies.

I bought a double pole 20 amp breaker. This means it has two wire connections for your "hot" wire. You can run a dedicated wire from one terminal to one outlet and another from the other terminal to another outlet. This will allow you to run two S9 antminers that each have 2 power supplies.

If you are going to use a 220V power supply, you will need at least two 15amp breakers. You will need a special outlet that will accept a 220 V plug connection as it will contain 2 "hot wires" (or one 120V wire from each breaker). Alternatively, you could use a 30 amp breaker with 2 poles and wire each terminal to your 220V outlet.

Other than that you need to make sure your electrical panel can handle multiple antminers. Your panel should say how many amps it is rated for. Lets say you have a 100 amp panel. Figure out all that appliances that could potentially run at the same time and add up the rated wattage for each (all should have a label with wattage requirements i.e. 1.2 kW aka 1200 watts). Example Fridge 700W, Dryer 1200W, Oven 800W, Microwave 1200W, AC unit 1200W and 2 antminers at 1600W each. They all add up to 8300 watts. If we divide 8300 watts by 120V you are at 69 amps. This leaves you some room for 2 more antminers as each will use about 13.5 amps. You do not want to use more current than what your panel is rated for. If needed, you can just make sure you aren't using two appliances at the same time that would put you over 100 amps.

As mentioned, you should always turn the main breaker off if you are going to be installing any new breakers or outlets. If you don't normally work with electricity, you have no business being inside it. It takes less than an amp to kill and you are playing with enough to kill you 20 times over or more.

Wow, tough crowd here :-) You are all right, mining is no joke and I'm happy with the results in my short time I have been digging for bitcoin. I hope I will be able to experience the freedom to work for myself someday like others in the community. Good luck and I hope this mine doesn't run dry anytime soon.

The joke isn't funny if you have to explain it ;-P It is a play on words. In english if you are minding your own business, it means you aren't meddling in someone else's affairs. Minding and mining sound very close to each other. I hope it makes sense now.

Hello folks, I'm a newbie to the mining scene. I came up with a pretty corny joke this morning and I apologize if this one has been done before.

Question: What did one bitcoin miner say to the other?
Answer: Nothing, he was too busy mining his own business!