Hm... Running the hashboard on cgminer is a lot more of a software problem than a hardware problem. There might be enough info out there to build a USB adapter to the 18-pin cable with a micro on it. Take some time, but not impossible. It'd probably be easier to just write a cgminer for the native controller but that's difficult without any real chip info or hardware info like might be available if they released bmminer code which would solve the problem anyway.

Sounds like good times.

It is an ISP header. I pulled firmware off the first one to come in the shop back in Batch 1, but since it was a customer machine I wasn't authorized to do anything that would void the warranty. Only enough to get the chip number and a firmware dump. I haven't seen what it'd take to modify my S7 firmware for an S9 but it's probably not difficult, I just don't have one to test it on.

I've also seen it on a few boards; I cleared the holes and programmed them as usual. Most of the miners I've sent out didn't have the same voltage across each board; they were all tested individually for coldest stability at a given frequency and then tested as a whole. It'd be the same concept as running several Compacs off the same hub but each one set to a different core voltage, whatever that stick needed to work best.

Is this going to be fundamentally different than, say, plugging a USB-connected miner into a Windows computer and running cgminer to control it?

I'm assuming you've looked into the thread enough to know there's a DLL missing from the Windows build that needs to be copied across from a stock cgminer archive?

You're not kidding. I got alerts that hosted miners were overheating yesterday at 8AM. I went out to the shop early afternoon and ambient temps were 98F in the shade, and when I opened the big doors to get some air movement it actually got hotter.

I still have two of 'em, take your pick.

As for shipping, I'll have to get back to you. I tend to use FedEx for packages but I've had no luck with not getting screwed on sending FedEx packages to Canada. Any way you could send a label for pretty much any major service?

The flashing circuit is completely independent of the hashing and controls parts. More likely it's an issue with the LED or an attached resistor.

I purchased a total of 15 S7LN from Bitmain and got three bad power supplies. I was able to fix one of them but 20% failure rate is not impressive. I could tell several of the working supplies had also been opened up and worked on before they ever got to me.

A good PSU breakout board is pretty much foolproof. A lot of them nowdays have the same power jacks as the miner will, so to mess up cabling is almost impossible. Just plug everything together (it'll only go one way), flip the switch and you're on.

If they haven't sold by then. I'm not sure when I'll be getting more to work up.

Well there you go. What were they, about $3 apiece for that length?

I have a good setup for crimping pins right now, but not for the ring terminals so a huge batch of those cables would still take some time. Unless I bought or built a better crimp setup for ring terminals, which could happen especially if a couple thousand cables were desired. That would knock the price down as well.

I probably can ship to the UK, yeah. I haven't done a lot of international shipping so I'm not sure what different carriers require for paperwork; the easiest thing for me is to be provided a label (I have ready access to UPS, FedEx and DHL) but not everyone has an account to do that. We can discuss details in a PM.

These units aren't as quiet, but they are more efficient than a stock S7LN. The two I just added (63 & 64) are both running pretty good in 85-100F ambient on 30% fan speed so in a cool room they could go lower. For minimum-threshold-voltage boards, running hot seems to help with stability. Everything not marked as "sold" is still up for grabs.

Is it ever worth buying overpriced ones from eBay? The price direct from Bitmain is already overpriced; adding more on top of that is shooting yourself in the foot.

I forget who for offhand, but I've made cables with ring terminals that mount right up to the breakout board on these PSUs. It's not very hard to reuse them.

Can't wait to see it with cleaner cabling.

It's advertising a server PSU and breakout board which is, overall, better than Bitmain's PSU. The conversion efficiency is a few percent lower but the total power, reliability, flexibility and price beat it.

If you're in the US and wanting to buy S7 from Bitmain, I can probably hook you up with undervolted units that run 85% hashrate at under 70% power versus stock units, with a power supply, for about the same price you can get just a new S7 shipped from Bitmain. This makes 'em more efficient than an S7-LN and can also be run on 120V.

Not sure if anyone's interested, but I'm having good luck working up S7s to run 4TH under 1000W off a DPS1200 PSU so I've got some available in the sales board. I'm working on a deal with a guy who is retiring a mine, so I should probably have more of these in the future.

He probably meant 29 June

What's the reason for those exact requirements?