I wonder how much it would freak out if you used an external PWM fan driver and piped through the tach line so it would still see the fan spinning?

Believe it.

I also make custom cabling. PM me with a bit more detail on what you're looking for (expected power loads, lengths, gender of each end etc) and I'll see what I can come up with.

Also, expected delivery of the PCBs is tomorrow. I thought I'd have 'em by now as the shipping expectation was about the 11th, but according to tracking they weren't on the move until the 14th.

Auto-tuning is a good idea, but only if it's an option and not a mandate. There should be manual control of everything, with an automatic everything as an optional setting.

Course, I think the same thing about cars and nobody pays attention to that either.

This is kind of a test sale for a new revision of my old standby Dell 750W PSU breakout board. It's been redesigned to fit 6x PCIe 6-pin jacks for faster setup. It's also easier to set up in paralle with single-switch control.

This kit will allow you to run an S7 or S9 on a 120VAC circuit; no needing to wire up 240V circuits or buy $300 ATX supplies.

Right now I have four sets available, being as these are prototype units; I've had a pair up and running for a month now with no trouble.

A new version has already been designed that improves fan speed control.

To load-balance properly, the two PSUs need to be tied together into a common rail. This is as easy as making sure individual hashing boards are cabled to both PSUs instead of just one or the other. The two boards' CS pins need to be tied together. Tying the two boards' EON pins together will enable both boards to be kicked on simultaneously from either board's power switch.

Kits are available for $100 apiece. This includes two Dell 750W PSUs, two breakout boards and 10x 18" 6-pin cables, plus two jumper wires for load-balancing and single-switch control. $15 to ship within the US.

Dust-free would help, since heatsinks can get clogged. As long as you kick the dust out of them regularly (compressed air and whatnot) they can survive about anything.

Yep, the S9 has ethernet built in. You'll hook 'em all to a network switch. They are also set up for DHCP, which means they don't have preset IP addresses so your router will have to handle that. Most do automatically, but it's something to note just in case.

Miners don't require much bandwidth at all. The most important thing is going to be latency, so you'll want a connection with short ping times to the pools you want to use. Speed's secondary as long as it's reliable. You can run a whole farm off a 1mbit connection as long as it's low-latency. And if you're worried about it, run a local proxy to the pool; that will convolve all your miner connections into one pool connection and use even less data transfer.

Just throwing this out there, but these are questions it's usually wise to answer before laying down four figures on equipment.

220V is a better option for loads in this power range. You can run three S9 to a 20-amp circuit.

I'd recommend server PSUs over consumer ATX supplies. Comparable efficiency, lower cost, modularity and easy to replace.

You'll want to keep the ambient temperature below 90F, preferably below 80F. These miners are fine to run 24/7.

Remote access will give you a lot of control, but occasionally they might lock up or a fan will kick out or a PSU will trip that'll require on-site attention.

So, pretty much what he said.

I've got hosting space for about half a dozen S9 if anyone's looking to buy but needs somewhere to put 'em. $65 per kilowatt per month means about $3 a day. Just throwing that out there.

I may be interested in fetching this for the museum. I've got some other BFL gear but no Monarchs. Never actually even seen one in person.

I can't say for sure what the issue is (300MHz should show you 16.5GH per stick) but I bet the issue is something to do with Windows 10, which sucks and I will never apologize for saying that.

My shop's on a rural electric coop in southern Missouri. No problems at all.

I've got 100KW of miners on a 3mbit synchronous and still have pleny of headroom. Latency matters a lot more than bandwidth.

It won't be round. CPU heatsinks sounds most interesting but I specifically said I won't be making it CPU heatsink compatible so it doesn't really matter. It'll run in the same power range as a U3 and hook up similarly, but get a buttload more hashrate.

The TypeZero will run in the same power range as the S1, stock probably hotter than S1 but less than S5. Should be better for a home miner than something that draws 1400W wall.

Oh, it's a language comprehension issue. I gotcha now, sorry. You would sell me six S5 for just the cost of shipping. Is that complete machines in the original packaging? Sounds like a good deal.

What do you estimate for shipping cost to US 65401?

I honestly don't know what that means, but I am inclined to guess you don't know what I'm doing with them.

That's why when we upgraded service at the shop I ran the lines from the transformer myself, with wires about 15% overrated for the rated service load. The transformers should blow up before anything I have to pay to replace. The utility provider has not been upset at all that I'm pulling 100KW continuous.

Oh yeah, what do you want for it?

The reset is unlikely to do anything, but if you want to try briefly shorting it to ground that resets the chip.

No idea. But increasing the voltage (measurable on VCORE testpad, range 550-800mV) will allow you to increase the operating frequency. Just make sure you keep everything cool.

Well like I said, I had samples from 2 manufacturers. One of them, the one I had first and already have a hardware prototype capable of hashing, won't be selling more chips so those few prototypes are all that will exist.

The other sent me a bunch more samples (enough to test a stick and a pod) and good datasheets, and they've been proactive and supportive so far. The project is split into three parts (hardware, firmware, driver) with "vh" coding the driver and novak back at the wheel for controls. I've already sent a sans-microcontroller layout to Novak to finish up. My goal is to be shipping sticks by Christmas, which will depend heavily on chip supplies and where the money comes from, which gives us about five weeks to iron out a manufacturable design in time to get a bulk batch of PCBs ordered.

I'm also already working on a pod miner layout that I expect to pull about 80W at the top end. It'll be designed for 12VDC, and take in power from either a barrel jack or a PCIe 6-pin. USB connection with the controls based on the stickminer (which will integrate software voltage control and a temp sensor) probably plus fan control. I will not, as I intended with BM1384 pods, make it compatible with CPU heatsinks as I wasted a heck of a lot of board space providing for various mounting frames and stuff. The current layout, if I can keep it, will be 3x4 inches and use an 80mm fan.

The controls for that will pipe directly into the TypeZero project, which is to say the S1/3/5 chassis-compatible boards. Instead of 80W we're looking more like 200W peak per board.

I'm more excited about it now than I have been in a long time. Just depends on the chip source staying cooperative.