I am working for an implementation for the pandaboard and will also create one for the rasberry pi as soon as i get my hands on one.
there is a QEMU dev environment that you can download to cross-compile.
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Topic: FPGA development board "Icarus" - DisContinued/ important announcement - page 21. (Read 207285 times)
March 06, 2012, 06:37:24 AM
there is a QEMU dev environment that you can download to cross-compile.
marked
March 06, 2012, 12:48:05 AM
Icarus and Ztex boards working side by side. On the right my little 20.5A PSU 
What's the name of that PSU?
Kenwood PS 33
March 05, 2012, 11:27:21 PM
Thanks for all the Watt/Ampere information. I am going to buy a ATX power supply. I've seen lots of them in local PC shops with 350 to 1200 Watt (I guess if I look at server shops I can also find higher ones). The question is what makes most sense for my little mining farm with future upgrades.
I don't know how many Molex cables the ATX power supply usually has. Wikipedia says the Molex plug is limited to 11A/132 Watt. So 6 Icarus per Molex. If this is the case, then it doesn't make sense to buy a higher wattage ATX power supply with more watt than I have Molex connectors.
Can anyone confirm this?
ZTEX wrote somewhere in his thread that you can power 30 of his boards with a ATX PSU. He also put up this guide how to build a PSU for a cluster. He also said this in the guide:
GND wires from PSU (black) should not power more than 3 FPGA Boards and +12V wires (yellow) should not power more than 5 FPGA Boards. (GND wires are more critical in order to reduce current flows through USB cable)
I don't know how many Molex cables the ATX power supply usually has. Wikipedia says the Molex plug is limited to 11A/132 Watt. So 6 Icarus per Molex. If this is the case, then it doesn't make sense to buy a higher wattage ATX power supply with more watt than I have Molex connectors.
Can anyone confirm this?
ZTEX wrote somewhere in his thread that you can power 30 of his boards with a ATX PSU. He also put up this guide how to build a PSU for a cluster. He also said this in the guide:
GND wires from PSU (black) should not power more than 3 FPGA Boards and +12V wires (yellow) should not power more than 5 FPGA Boards. (GND wires are more critical in order to reduce current flows through USB cable)
by my experience, with low wire quality in usual, i suggest to power NO MORE than 4 icarus with one D type plug (molex plug). even 3 is safer.
March 05, 2012, 08:46:12 PM
Icarus and Ztex boards working side by side. On the right my little 20.5A PSU
What's the name of that PSU?
March 05, 2012, 08:24:53 PM
Thanks for all the Watt/Ampere information. I am going to buy a ATX power supply. I've seen lots of them in local PC shops with 350 to 1200 Watt (I guess if I look at server shops I can also find higher ones). The question is what makes most sense for my little mining farm with future upgrades.
I don't know how many Molex cables the ATX power supply usually has. Wikipedia says the Molex plug is limited to 11A/132 Watt. So 6 Icarus per Molex. If this is the case, then it doesn't make sense to buy a higher wattage ATX power supply with more watt than I have Molex connectors.
Can anyone confirm this?
ZTEX wrote somewhere in his thread that you can power 30 of his boards with a ATX PSU. He also put up this guide how to build a PSU for a cluster. He also said this in the guide:
GND wires from PSU (black) should not power more than 3 FPGA Boards and +12V wires (yellow) should not power more than 5 FPGA Boards. (GND wires are more critical in order to reduce current flows through USB cable)
I don't know how many Molex cables the ATX power supply usually has. Wikipedia says the Molex plug is limited to 11A/132 Watt. So 6 Icarus per Molex. If this is the case, then it doesn't make sense to buy a higher wattage ATX power supply with more watt than I have Molex connectors.
Can anyone confirm this?
ZTEX wrote somewhere in his thread that you can power 30 of his boards with a ATX PSU. He also put up this guide how to build a PSU for a cluster. He also said this in the guide:
GND wires from PSU (black) should not power more than 3 FPGA Boards and +12V wires (yellow) should not power more than 5 FPGA Boards. (GND wires are more critical in order to reduce current flows through USB cable)
March 05, 2012, 12:54:28 PM
Icarus and Ztex boards working side by side. On the right my little 20.5A PSU
March 05, 2012, 11:36:22 AM
To add more data 
, I measured for one board (but using 3 and took the average):
30 VA
16,3 Watt
, I measured for one board (but using 3 and took the average):30 VA
16,3 Watt
March 05, 2012, 10:02:14 AM
ok, let's do some deeper research. i find a DC power supply with monitor.
input is 12V, fan is running :
IDLE: 0.36A, 4.32W
MINING: 1.66A, 19.92W
power slightly grow up because 3rd batch uses a faster fan.
test shows the board can operate normally under 10-13.5V.
when the input is 12V, you will get the best power efficiency. both 10V or 13.5V will slightly higher (1-2%, means 20.1W)
input is 12V, fan is running :
IDLE: 0.36A, 4.32W
MINING: 1.66A, 19.92W
power slightly grow up because 3rd batch uses a faster fan.
test shows the board can operate normally under 10-13.5V.
when the input is 12V, you will get the best power efficiency. both 10V or 13.5V will slightly higher (1-2%, means 20.1W)
March 05, 2012, 09:23:01 AM
...
by my review, the adapter consuming about 20W (+/- 0.5W ) from the wall. i'm using a 1% accuracy meter, but ... made in China.
Yeah I'm no longer certain how accurate mine is.by my review, the adapter consuming about 20W (+/- 0.5W ) from the wall. i'm using a 1% accuracy meter, but ... made in China.
If I ever get around to making the molex cable to power the 2 boards I'll then have a better idea
If it drops to close to 20W then yep my meter is OK.
If it stays around 30W then I may need to get a better watt meter ...
However, my 60W is the total wall increase on everything when adding 2 Icarus boards and plug packs
(including any extra USB power to the computer and any tiny increase in CPU power to the computer already mining 2x6950)
March 05, 2012, 09:13:57 AM
Could I run 2 Icarus with 1 of the original power supplies from ngzhang?
(by cutting the wires and adding a Y cable)
If not, how many ampere do I need for 1 Icarus? I am trying to cut down on power supplies. Best would be one power supply for all 5 of them.
(by cutting the wires and adding a Y cable)
If not, how many ampere do I need for 1 Icarus? I am trying to cut down on power supplies. Best would be one power supply for all 5 of them.
i suggest you to reserve 2A current to each board.
Could I run 2 Icarus with 1 of the original power supplies from ngzhang?
(by cutting the wires and adding a Y cable)
If not, how many ampere do I need for 1 Icarus? I am trying to cut down on power supplies. Best would be one power supply for all 5 of them.
Well ... considering it is supposed to be 19.5W per board and the original plug pack is 12V x 2A = 24W ...(by cutting the wires and adding a Y cable)
If not, how many ampere do I need for 1 Icarus? I am trying to cut down on power supplies. Best would be one power supply for all 5 of them.
Edit: A simple spliced cable connected to a plug that can connect straight to a PSU is sounding better every day ...
I think my plug packs might be drawing 30W each at the wall socket
(my watt meter says it has gone up 60W since I added 2 Icarus - but I'm not 100% sure that's correct)
and I know the higher power PSUs in computers are way better able to transfer the majority of the supplied power to the devices connected to them.
Hmm - new quick project to do one day - make a pair cable to use one of the computer PSU's ...
by my review, the adapter consuming about 20W (+/- 0.5W ) from the wall. i'm using a 1% accuracy meter, but ... made in China.
March 05, 2012, 08:01:05 AM
Could I run 2 Icarus with 1 of the original power supplies from ngzhang?
(by cutting the wires and adding a Y cable)
If not, how many ampere do I need for 1 Icarus? I am trying to cut down on power supplies. Best would be one power supply for all 5 of them.
Well ... considering it is supposed to be 19.5W per board and the original plug pack is 12V x 2A = 24W ...(by cutting the wires and adding a Y cable)
If not, how many ampere do I need for 1 Icarus? I am trying to cut down on power supplies. Best would be one power supply for all 5 of them.
Edit: A simple spliced cable connected to a plug that can connect straight to a PSU is sounding better every day ...
I think my plug packs might be drawing 30W each at the wall socket
(my watt meter says it has gone up 60W since I added 2 Icarus - but I'm not 100% sure that's correct)
and I know the higher power PSUs in computers are way better able to transfer the majority of the supplied power to the devices connected to them.
Hmm - new quick project to do one day - make a pair cable to use one of the computer PSU's ...
March 05, 2012, 07:41:08 AM
Could I run 2 Icarus with 1 of the original power supplies from ngzhang?
(by cutting the wires and adding a Y cable)
If not, how many ampere do I need for 1 Icarus? I am trying to cut down on power supplies. Best would be one power supply for all 5 of them.
(by cutting the wires and adding a Y cable)
If not, how many ampere do I need for 1 Icarus? I am trying to cut down on power supplies. Best would be one power supply for all 5 of them.
March 05, 2012, 02:25:12 AM
I am sucessfully running the icarus board of an "gumstix" ARM board using the modular python bitcoin miner p2pool and the bitcoin-qt client.
I am working for an implementation for the pandaboard and will also create one for the rasberry pi as soon as i get my hands on one.
I will create a thread regarding this as soon as i get the time ( maybe end of this week)
I am working for an implementation for the pandaboard and will also create one for the rasberry pi as soon as i get my hands on one.
I will create a thread regarding this as soon as i get the time ( maybe end of this week)
March 04, 2012, 04:33:26 PM
Well ... the android media players could probably already run the Icarus with little effort.
Xiangfu compiled cgminer to run on his MIPS router and was using that during our testing.
Xiangfu compiled cgminer to run on his MIPS router and was using that during our testing.
March 04, 2012, 06:58:51 AM
I'm running my Icarus with 12 V from my powers supply. I had to chop the original plug. Now my question. I'd like to connect Icarus to my second 13.5 V PSU. Is that ok or are 13.5 V too far out of specs for the boards ? The ZTEX have no problems but he clearly states up to 16 V. Without go from Zhang i'm not going to burn it up !
the optimize voltage range is 10-14V. and 14.5V absolute.
Ok thanks for the info. I'm happy with the board so far !
March 04, 2012, 06:36:25 AM
I'm running my Icarus with 12 V from my powers supply. I had to chop the original plug. Now my question. I'd like to connect Icarus to my second 13.5 V PSU. Is that ok or are 13.5 V too far out of specs for the boards ? The ZTEX have no problems but he clearly states up to 16 V. Without go from Zhang i'm not going to burn it up !
the optimize voltage range is 10-14V. and 14.5V absolute.
March 04, 2012, 06:31:52 AM
I wonder if this is going to work with Raspberry Pi ARM device... it would be very nice.
It should, at least if you use MPBM as your mining software. Not sure about the other softwares.
March 04, 2012, 05:14:46 AM
There is a FAN2 socket on the Icarus board and it's 12V.
Would it be possible to use this for a 12cm fan?
Would it be possible to use this for a 12cm fan?
yes and please use a fan less than 0.2A
This is definitely the cleanest solution then, I will look for those and small plugs that fit the board.
March 04, 2012, 05:09:58 AM
I'm running my Icarus with 12 V from my powers supply. I had to chop the original plug. Now my question. I'd like to connect Icarus to my second 13.5 V PSU. Is that ok or are 13.5 V too far out of specs for the boards ? The ZTEX have no problems but he clearly states up to 16 V. Without go from Zhang i'm not going to burn it up !
March 04, 2012, 04:29:42 AM
There is a FAN2 socket on the Icarus board and it's 12V.
Would it be possible to use this for a 12cm fan?
Would it be possible to use this for a 12cm fan?
yes and please use a fan less than 0.2A
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