Topic: New single ASIC miner board - page 3. (Read 12129 times)
can these smaller boards be run via pcie, with multiple chips on them?
You could run 2x USB cables like some external 2.5" sata hdds, so you can run 2 chips.
It'd give you a unique device with double the power of the other usb devices, without the need for a power supply.
It'd give you a unique device with double the power of the other usb devices, without the need for a power supply.
Yes, you are right. I will think about that! Maybe I change the board to have a better power supply on it and two avalon chips.
You could run 2x USB cables like some external 2.5" sata hdds, so you can run 2 chips.
It'd give you a unique device with double the power of the other usb devices, without the need for a power supply.
It'd give you a unique device with double the power of the other usb devices, without the need for a power supply.
I personally think it's a bit big for just one chip but still nice, good thing that ppl are still working on ideas 
USB 3.0 outputs some more watt, enough to run 2 chips?
USB 3.0 outputs some more watt, enough to run 2 chips?
It would be possible to make the board a bit smaller. As you can see on the 3D image, the mounting holes are adding some space mainly at the top and right border. If I remove the holes, the board would be smaller. But I like the holes because I can use them to stack multiple boards. And the spacing between the holes on the longer side (60mm side) matches the the spacing of 60mm fans. So, it would be possible to use the holes to mount a 60mm fan (e.g. with an angle bracket - I don't know if this is the right English word).
USB 3.0 specifies 800mA of output current (= 4W). I think it should be possible to power 2 chips.
I personally think it's a bit big for just one chip but still nice, good thing that ppl are still working on ideas
USB 3.0 outputs some more watt, enough to run 2 chips?
USB 3.0 outputs some more watt, enough to run 2 chips?
And on the issue of multiple chips per device, I'm pretty sure the power consumption would exceed the USB spec even with 2 chips and you would need an alternative power source.
You are absolutely right. USB spec defines 500mA as maximum supply current (means 2.5W). I think most of the USB hubs are able to supply a bit more current. But two Avalon chips would require 4 to 5W and this would mean 800mA to 1A of supply current at 5V. And this is for sure too much for USB (at least if you want to run it stable).
This was another reason for just using one Avalon chip (for the beginning). To keep it simple and stupid (KISS), I don't wanted an external power supply, just USB. And this limits the number of Avalon chips to a single one.
Good
A number of people have sample chips and should be able to spare one or two just to encourage another developer.
The heatsink question depends on the chip clock. For testing purposes at low clocks you can get away with no heatsink, but the finished product would definitely need one to run at a reasonable speed. What's the target performance of the device? How far you can clock it would have a very big impact on profitability and size of market. (obviously, as long as you also deal with the power and cooling issues that come with it)
And on the issue of multiple chips per device, I'm pretty sure the power consumption would exceed the USB spec even with 2 chips and you would need an alternative power source.
The heatsink question depends on the chip clock. For testing purposes at low clocks you can get away with no heatsink, but the finished product would definitely need one to run at a reasonable speed. What's the target performance of the device? How far you can clock it would have a very big impact on profitability and size of market. (obviously, as long as you also deal with the power and cooling issues that come with it)
And on the issue of multiple chips per device, I'm pretty sure the power consumption would exceed the USB spec even with 2 chips and you would need an alternative power source.
I can send you one or two sample chips for free from my groupbuy. Let me know your address and whats the maximum you need and ill ship it.
Two sample chips would be great to make a working prototype. Do you have them already in-hand?
It's nice to see more boards, but you should consider putting more avalons on there for economy.
Sure, but for the beginning I want to keep it simple. And I think it is very nice when the board is powered only by USB.
can you make board for bfl labs chip?
If there is a datasheet, I will be able to build a board for bfl labs chips. Is there a datasheet and are these chips available?
I can send you one or two sample chips for free from my groupbuy. Let me know your address and whats the maximum you need and ill ship it.
It's nice to see more boards, but you should consider putting more avalons on there for economy.
can you make board for bfl labs chip?
i am in for 10 or maybe 20 pieces
Price is 19.50 USD per piece. Shipping cost and taxes are not included. So, I think the price will be around 20 EUR/piece (or about 25 USD/piece).
i am in if the price is good
Interesting question! I heard alot, too. I have also got an offer from a Chinese company. They told me that they are able to ship 10 samples at July 15. But only if I order 240 pieces. And that is too much for me alone. Is anyone interested in that?
Has anybody still received any actual chip from the few ASIC bitcoin companies out there? I heard a lot of noise about the pre-sales and ... But, I haven't heard anybody actually getting the ASIC in-hand. Do you guys have any further news on that?
Btw, does anybody know if a single Avalon ASIC needs a heatsink?
Most likely, but wouldnt need a big one... especially since the PCB is much larger than usb eruptor or K1 so you already have a large surface area. Make sure to add thermal vias and large GND plate in the bottom side. After that if it runs hot just stick in a light heatsink. Its just 2 - 2.5W of heat.
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