Sorry to change the subject from Heatsinks.
I'm a little concerned about the plan for reading RESULT using the ESAUSRT. It seems like a nice hack but what happens if the serial port gets into a bad state - if an extra clock edge is caused by a reset, noise, or a result collision, and the framing comes out of sync - the serial port's bit count is wrong.
I agree that result collisions will be rare enough that they can be ignored - as long as the failure mode is simply a dropped share, but if the failure mode is that it stops being possible to get a valid result until a system reset, that would not be acceptable. It could also be very difficult to debug.
The solution might be as simple as a periodic process that detects that the serial port is in a bad state, has been for minimum amount of time, and does a firmware reset of the port to correct the situation.
I've seen this type of problem in other designs and just wanted to make sure you were aware of it.
Topic: Klondike - 16 chip ASIC Open Source Board - Preliminary - page 142. (Read 435369 times)
Today I got quote from local company for PCB and assembly of K1 nano.
The price for pcb and assembly would be around 10 EUR per piece for batch of 192 pcs.
Now I'm waiting for quote for delivery of components.
I think We'll be able to organize good price for assembly BG, Eastern Europe
The price for pcb and assembly would be around 10 EUR per piece for batch of 192 pcs.
Now I'm waiting for quote for delivery of components.
I think We'll be able to organize good price for assembly BG, Eastern Europe
+1
Very interested, I'm in the neighborhood country.
Well, that's interesting.
The greenconn one doesn't work because it's thru-hole and only 1A per pin rating (need 1.5A). But the other one looks possible. Would have to see current ratings, and it's not clear if SMT. 20,000pc MOQ. Well, maybe they turn up elsewhere on a secondary market (likely buckets of them somewhere in Shenzen). It's a bit late to put this on first test boards but if the info is available it's a possibility for a future version.
The greenconn one doesn't work because it's thru-hole and only 1A per pin rating (need 1.5A). But the other one looks possible. Would have to see current ratings, and it's not clear if SMT. 20,000pc MOQ. Well, maybe they turn up elsewhere on a secondary market (likely buckets of them somewhere in Shenzen). It's a bit late to put this on first test boards but if the info is available it's a possibility for a future version.
Today I got quote from local company for PCB and assembly of K1 nano.
The price for pcb and assembly would be around 10 EUR per piece for batch of 192 pcs.
Now I'm waiting for quote for delivery of components.
I think We'll be able to organize good price for assembly BG, Eastern Europe
The price for pcb and assembly would be around 10 EUR per piece for batch of 192 pcs.
Now I'm waiting for quote for delivery of components.
I think We'll be able to organize good price for assembly BG, Eastern Europe
+1
That seems pretty good.
Might be time to ask some of our Chinese brethren and sisteren if they know of a place online for that... Probably lurking somewhere out there.
There's plenty of 7+15 available but none of just the 15 pin. I guess they don't license it like that or something - don't want it used for other things besides hard disks.http://greenconn.manufacturer.globalsources.com/si/6008801294151/pdtl/ATA-SATA/1041047273/SATA-Connector.htm
http://dgyiqin.manufacturer.globalsources.com/si/6008830315092/pdtl/ATA-SATA/1056189085/ATA-SATA-Connector.htm
http://www.taiwantrade.com.tw/MAIN/en_front/searchserv.do?method=listProductProductDetail&company_id=3584&locale=2&catalog_id=410527&come_soon=0
More:
http://www.cablemax.com/CD011160A.html
http://www.21usb.com/List/SATA%E8%BF%9E%E6%8E%A5%E5%99%A8-1.html
http://www.leyconn.com/doce/productslist.asp?cid=365&classid=384
Today I got quote from local company for PCB and assembly of K1 nano.
The price for pcb and assembly would be around 10 EUR per piece for batch of 192 pcs.
Now I'm waiting for quote for delivery of components.
I think We'll be able to organize good price for assembly BG, Eastern Europe
The price for pcb and assembly would be around 10 EUR per piece for batch of 192 pcs.
Now I'm waiting for quote for delivery of components.
I think We'll be able to organize good price for assembly BG, Eastern Europe
BkkCoins, you are doing a great job!
Your project is a first reason I joined this forum. I'm going to buy about 500 chips, so I will need about 30 PCBs.
I feel this summer is going to be hot!
Thanks. It's already averaging around 35-37C here. Your project is a first reason I joined this forum. I'm going to buy about 500 chips, so I will need about 30 PCBs.
I feel this summer is going to be hot!
BTW I've got the code for the pre-calc hash figured out. After a helpful push from chaoztc I did a little digging and managed to find the needed code and verify it looks like it does the right calcs for the Avalon. Found it in the opencl driver. Just ask if you need this for your own work. Maybe this is old hat to sha experts but all the bit fiddling math cycles are a blur to me.
Might be time to ask some of our Chinese brethren and sisteren if they know of a place online for that... Probably lurking somewhere out there.
There's plenty of 7+15 available but none of just the 15 pin. I guess they don't license it like that or something - don't want it used for other things besides hard disks.
BkkCoins, you are doing a great job!
Your project is a first reason I joined this forum. I'm going to buy about 500 chips, so I will need about 30 PCBs.
I feel this summer is going to be hot!
Your project is a first reason I joined this forum. I'm going to buy about 500 chips, so I will need about 30 PCBs.
I feel this summer is going to be hot!
I also spent a whole day looking for SMD mounted SATA power connectors during the early days of this project. I think it would be ideal, but they just aren't to be found. Even if the part cost more than the PCIe, eliminating the 2nd buck regulator and associated components could easily pay for it. Less power losses on the board also. However I just can't find the 15pin power connector anywhere.
Might be time to ask some of our Chinese brethren and sisteren if they know of a place online for that... Probably lurking somewhere out there.
http://www.te.com/catalog/bin/TE.Connect?S=23561&M=FEAT&P=10198&U=&BML=&LG=1
http://www.te.com/catalog/bin/TE.Connect?S=23561&M=PPROP&P=10198&BML=&LG=1&PG=1&IDS=476501,476504,476507,366589,366590,366591,426368,444118,476498,476499,517918,470841,470850,470876,470877,470880,470882,530141,517919,510861&N=12
http://www.te.com/catalog/bin/TE.Connect?S=23561&M=PPROP&P=10198&BML=&LG=1&PG=1&IDS=476501,476504,476507,366589,366590,366591,426368,444118,476498,476499,517918,470841,470850,470876,470877,470880,470882,530141,517919,510861&N=11
ENG_CD_1735284_C2_1735284-c.pdf
Product Type Features:
Product Type = Connector
Connector Type = Receptacle
PCB Mounting Orientation = Vertical
Receptacle Configuration = 15P + 7P Combo, SATA
PCB Mount Style = Surface Mount
PCB Mount Retention = With
PCB Mount Retention Type = Boardlock(s)
I also spent a whole day looking for SMD mounted SATA power connectors during the early days of this project. I think it would be ideal, but they just aren't to be found. Even if the part cost more than the PCIe, eliminating the 2nd buck regulator and associated components could easily pay for it. Less power losses on the board also. However I just can't find the 15pin power connector anywhere.
I tried 4UCONN as well but they only have 7+15. It seems the only way would be a male 15 pin hanging off wires soldered to the board - ugly. Instead of building a PnP machine,how about this??
http://www.ebay.com/itm/Manual-Pick-Place-Machine-SMD-TP-VF-XYA-with-Cameras-/320724328952?pt=LH_DefaultDomain_0&hash=item4aaca8e1f8
Edit:Nevermind,its not what it looks like
Besides, I want to make one for a couple hundred $$ not thousand. But that's another whole topic. http://www.ebay.com/itm/Manual-Pick-Place-Machine-SMD-TP-VF-XYA-with-Cameras-/320724328952?pt=LH_DefaultDomain_0&hash=item4aaca8e1f8
Edit:Nevermind,its not what it looks like
I also spent a whole day looking for SMD mounted SATA power connectors during the early days of this project. I think it would be ideal, but they just aren't to be found. Even if the part cost more than the PCIe, eliminating the 2nd buck regulator and associated components could easily pay for it. Less power losses on the board also. However I just can't find the 15pin power connector anywhere.
solar mining? oh, i'm TOTALLY in.
Nice idea, but will it not need some battery for mining through the night? Maybe it is best idea not to over-complicate the project and to leave the solar charger for another specialized project.
Instead of building a PnP machine,how about this??
http://www.ebay.com/itm/Manual-Pick-Place-Machine-SMD-TP-VF-XYA-with-Cameras-/320724328952?pt=LH_DefaultDomain_0&hash=item4aaca8e1f8
Edit:Nevermind,its not what it looks like
solar mining? oh, i'm TOTALLY in.
Nice idea, but will it not need some battery for mining through the night? Maybe it is best idea not to over-complicate the project and to leave the solar charger for another specialized project.
solar mining? oh, i'm TOTALLY in.
Nice idea, but will it not need some battery for mining through the night? Maybe it is best idea not to over-complicate the project and to leave the solar charger for another specialized project.
Another idea I consider something for later work is a Kondike Solar. A small unit with 3"x6" solar cell attached and DC converter to run it all off 1V. This appears to be feasible and for low cost. ie. the solar cell is only about $1 and so a small portion of the circuit cost. One chip per cell and klego like tiling so you can lay out a full panel that mines from the sun...
Yes - this. Was just chatting about solar possibilities with colleagues the other day - very interested.
I don't think I'm going to do anything with SATA for the time being. Mostly due to the connector issue. But I think there is a possibility for a 8-12 chip 3.5" format that has the full SATA connector in the correct position for installing as a hard disk emulator. I'm not going to pursue that idea for now.
Another idea I consider something for later work is a Kondike Solar. A small unit with 3"x6" solar cell attached and DC converter to run it all off 1V. This appears to be feasible and for low cost. ie. the solar cell is only about $1 and so a small portion of the circuit cost. One chip per cell and klego like tiling so you can lay out a full panel that mines from the sun...
Another idea I consider something for later work is a Kondike Solar. A small unit with 3"x6" solar cell attached and DC converter to run it all off 1V. This appears to be feasible and for low cost. ie. the solar cell is only about $1 and so a small portion of the circuit cost. One chip per cell and klego like tiling so you can lay out a full panel that mines from the sun...
solar mining? oh, i'm TOTALLY in.
I don't think I'm going to do anything with SATA for the time being. Mostly due to the connector issue. But I think there is a possibility for a 8-12 chip 3.5" format that has the full SATA connector in the correct position for installing as a hard disk emulator. I'm not going to pursue that idea for now.
Another idea I consider something for later work is a Kondike Solar. A small unit with 3"x6" solar cell attached and DC converter to run it all off 1V. This appears to be feasible and for low cost. ie. the solar cell is only about $1 and so a small portion of the circuit cost. One chip per cell and klego like tiling so you can lay out a full panel that mines from the sun...
Another idea I consider something for later work is a Kondike Solar. A small unit with 3"x6" solar cell attached and DC converter to run it all off 1V. This appears to be feasible and for low cost. ie. the solar cell is only about $1 and so a small portion of the circuit cost. One chip per cell and klego like tiling so you can lay out a full panel that mines from the sun...
Sweet... I would definitely love to work on that with the kids here at school. Gen II chips?
I don't think I'm going to do anything with SATA for the time being. Mostly due to the connector issue. But I think there is a possibility for a 8-12 chip 3.5" format that has the full SATA connector in the correct position for installing as a hard disk emulator. I'm not going to pursue that idea for now.
Another idea I consider something for later work is a Kondike Solar. A small unit with 3"x6" solar cell attached and DC converter to run it all off 1V. This appears to be feasible and for low cost. ie. the solar cell is only about $1 and so a small portion of the circuit cost. One chip per cell and klego like tiling so you can lay out a full panel that mines from the sun...
Another idea I consider something for later work is a Kondike Solar. A small unit with 3"x6" solar cell attached and DC converter to run it all off 1V. This appears to be feasible and for low cost. ie. the solar cell is only about $1 and so a small portion of the circuit cost. One chip per cell and klego like tiling so you can lay out a full panel that mines from the sun...
Jump to: