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razorfishsl (OP)
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February 01, 2014, 06:39:45 AM
Last edit: March 19, 2014, 03:15:55 AM by razorfishsl |
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Also Guys,
There is no reason you cannot power you PI of these, I suspect the PI allows power via the USB connectors.
Just don't try and run any heavy graphic simulations that pull too much power as the re-settable fuses may cut in. (FIXED!!! Mar-2014)
RF
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Every time a block is mined, a certain amount of BTC (called the
subsidy) is created out of thin air and given to the miner. The
subsidy halves every four years and will reach 0 in about 130 years.
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Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction.
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jedimstr
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February 02, 2014, 11:13:31 PM |
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Does the 6% BTC discount apply to the grand total including shipping, or only on the hub cost itself (not shipping).
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klintay
Legendary
 Offline
Activity: 1775
Merit: 1032
Value will be measured in sats
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February 03, 2014, 06:23:20 PM |
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Does the 6% BTC discount apply to the grand total including shipping, or only on the hub cost itself (not shipping).
grand total |
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madao
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February 04, 2014, 04:44:04 PM |
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Hello,
I was pleased with my hub and was considering whether to try to gather interest over in the Scandinavian sub-forum in pooling our resources for a 6+ unit order to save on shipping and get the volume discount.
Felt it would be good form to ask you first before I solicited a purchase.
Naturally, I would organise everything on my end and you would deal only with me in terms of payment and shipping.
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1PgVAFtdNoKeFDmCc6Vq2jd72au8qjj8wE
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klintay
Legendary
Offline
Activity: 1775
Merit: 1032
Value will be measured in sats
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February 04, 2014, 06:41:34 PM |
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Hello,
I was pleased with my hub and was considering whether to try to gather interest over in the Scandinavian sub-forum in pooling our resources for a 6+ unit order to save on shipping and get the volume discount.
Felt it would be good form to ask you first before I solicited a purchase.
Naturally, I would organise everything on my end and you would deal only with me in terms of payment and shipping.
thanks for informing us first, i appreciate it. I think it is a good idea, let me know the details when you get everything sorted. Chinese New Year holiday is over now so no problems with delays on our end. Message me anytime if you have any questions. |
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madao
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February 07, 2014, 08:40:32 PM |
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Hello,
I was pleased with my hub and was considering whether to try to gather interest over in the Scandinavian sub-forum in pooling our resources for a 6+ unit order to save on shipping and get the volume discount.
Felt it would be good form to ask you first before I solicited a purchase.
Naturally, I would organise everything on my end and you would deal only with me in terms of payment and shipping.
thanks for informing us first, i appreciate it. I think it is a good idea, let me know the details when you get everything sorted. Chinese New Year holiday is over now so no problems with delays on our end. Message me anytime if you have any questions. Thank you for your response  FYI here is the thread!, https://bitcointalk.org/index.php?topic=454031.0hope to be in touch soon. |
1PgVAFtdNoKeFDmCc6Vq2jd72au8qjj8wE
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capa
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February 07, 2014, 09:31:30 PM |
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Hi, These look great, i will PM you for one right now. nice work |
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klintay
Legendary
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Activity: 1775
Merit: 1032
Value will be measured in sats
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February 08, 2014, 07:16:41 AM |
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Hi, These look great, i will PM you for one right now. nice work Do you want to pay with paypal or btc? |
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capa
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February 08, 2014, 07:20:57 AM |
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Hi, These look great, i will PM you for one right now. nice work Do you want to pay with paypal or btc? Hi klintay, Thanks for your reply to my post. It's all been sorted for me already I'll post again when I have it in hand. |
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klintay
Legendary
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Activity: 1775
Merit: 1032
Value will be measured in sats
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February 08, 2014, 04:44:39 PM |
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Hi, These look great, i will PM you for one right now. nice work Do you want to pay with paypal or btc? Hi klintay, Thanks for your reply to my post. It's all been sorted for me already I'll post again when I have it in hand. great leave a msg in the thread once you receive your item |
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capa
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February 28, 2014, 07:36:34 AM |
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I received my hub, it's the business |
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codice
Newbie
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Activity: 1
Merit: 0
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March 19, 2014, 02:07:59 AM |
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Just received the USB hub I ordered from razorfishsl last week. Ordering was very quick and easy, and razorfishsl provided updates at every step. Shipment was quicker than I expected, and the hub arrived in perfect condition. I've populated it with 8x Antminer U2 and 1x BFL Jalapeno to test it. Seems to be working flawlessly after tweaking some of the bfgminer options. Best of all, no hardware errors whatsoever on any of the Antminers after 30 minutes: bfgminer version 3.10.0 - Started: [2014-03-19 01:37:25] - [ 0 days 00:27:14]
[M]anage devices [P]ool management [S]ettings [D]isplay options [H]elp [Q]uit
Connected to stratum-lb-usa48.btcguild.com diff 8 with stratum as user XXXXXXXX
Block: ...99e42bba #291242 Diff:4.25G (30.42Ph/s) Started: [01:59:02]
ST:14 F:0 NB:6 AS:0 BW:[ 73/ 81 B/s] E:66.67 I: 107uBTC/hr BS:67.1k
9/10 39.0C | 23.24/24.66/21.31Gh/s | A:1068 R:3+3(.39%) HW:53/.65%
---------------------------------------------------------------------------------
AMU 0: | 2.10/ 2.24/ 1.79Gh/s | A: 95 R:0+0(none) HW: 0/none
AMU 1: | 2.29/ 2.23/ 1.69Gh/s | A: 103 R:0+0(none) HW: 0/none
AMU 2: | 2.39/ 2.24/ 1.81Gh/s | A: 76 R:0+0(none) HW: 0/none
AMU 3: | 1.77/ 2.24/ 1.83Gh/s | A: 95 R:0+1(.54%) HW: 0/none
AMU 4: | 1.96/ 2.20/ 1.79Gh/s | A: 96 R:0+1(.53%) HW: 0/none
AMU 5: | 2.25/ 2.22/ 1.83Gh/s | A: 90 R:1+0(1.2%) HW: 0/none
AMU 6: | 2.06/ 2.24/ 1.79Gh/s | A: 93 R:0+1(.56%) HW: 0/none
AMU 7: | 2.00/ 2.23/ 1.87Gh/s | A: 95 R:0+0(none) HW: 0/none
BFL 0: 40.0C | 6.90/ 6.86/ 6.93Gh/s | A: 326 R:2+0(.48%) HW:53/2.0%
--------------------------------------------------------------------------------- Highly recommended. The hub may seem a little expensive, but it's well worth the price. Many thanks! |
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razorfishsl (OP)
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March 19, 2014, 03:08:18 AM
Last edit: April 07, 2014, 02:57:31 AM by razorfishsl |
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Hi, Glad you received it in good condition and I see it is performing well. Yesterday I was working on a new project using this hub and a some flash drives i purchased in China over the weekend I'm thinking WTF is that burning smell, but put it down to the locals roasting some cats on the BBQ's they like to have. Nearly an hour later I identified it was from near the hub, tracked it down to one of the USB flash drives. Opened up my hub expecting to see something burned as well but there was zero damage, the poly-fuse had cut in and protected the other devices, power supply and PCB (that's the hub pcb) This is the second time this month that the hub has saved me a shit load of heartache, the first was on a load of USB->Ethernet adaptors, where they had wired the power rails backwards!!!! Normally with such failures on an "ebay hub" you would see the PSU dump the whole current onto the faulty device until the short is burned out!! Which results in all sorts of damage and possibly a house fire.  When you consider how many USB 2.0 hubs you purchased over the years , plus considering this hub has a life expectancy of years it really is good value for money. Plus with this hub you can power a PI from it and mine all from one power supply, instead of needing a separate PSU for the PI As Guy Kawasaki pointed out "you can compete on price or quality" ;-) RF |
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ManeBjorn
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Activity: 1288
Merit: 1004
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March 19, 2014, 03:26:54 AM |
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That is great news and bad news all at once.
Great that the hub is that solid. Mine works great. I have added Ants and DualMiners to it for testing and my 20 gh/s Jalapeno. No issues what so ever. A Pi will be running off it eventually as well.
The bad news is you have that nasty burnt smell in your house.
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razorfishsl (OP)
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March 19, 2014, 04:14:46 AM |
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Yep,
It once again highlights why buying Nand flash sticks in China is a high risk proposition, I just wanted them for the viri they come pre-installed with.
Also if during your research you find the hub won't power the PI due to the power requirements PM me directly I already have a solution.
I've been working on a Quad core mining controller which I finished the new kernel build for a couple of days ago but I also ran into issues with peak current consumption.
RF
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ManeBjorn
Legendary
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Activity: 1288
Merit: 1004
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March 19, 2014, 04:39:36 AM |
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Wow you have a bunch of irons in the fire. I will let you know if it does not power it. I hope to have a review unit in a couple weeks for my article. Yep,
It once again highlights why buying Nand flash sticks in China is a high risk proposition, I just wanted them for the viri they come pre-installed with.
Also if during your research you find the hub won't power the PI due to the power requirements PM me directly I already have a solution.
I've been working on a Quad core mining controller which I finished the new kernel build for a couple of days ago but I also ran into issues with peak current consumption.
RF
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razorfishsl (OP)
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March 31, 2014, 09:17:17 AM |
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Why go all the way over to that thread, when I can supply exactly the SAME product that has been professionally tested by Qualified engineers? Just PM me for a quote |
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philipma1957
Legendary
 Online
Activity: 4102
Merit: 7768
'The right to privacy matters'
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March 31, 2014, 02:17:54 PM |
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Why go all the way over to that thread, when I can supply exactly the SAME product that has been professionally tested by Qualified engineers? Just PM me for a quote I purchased from you and from klintay 19 port hubs I have 3 of them and they are really nice. |
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razorfishsl (OP)
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April 01, 2014, 12:00:51 AM |
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Hi Philip,
I'm glad you are happy with your purchase.
The 19 port hub is one of the few products I am happy to leave switched on 24 hours a day/ months on end, 90% humidity. So far it is also the only hub that has not damaged my USB controller in my mac , nor overloaded the samsung SBC's I use.
But yes, your quick analysis on 'ATX' power supplies is fairly close to the mark, anyone with a screwdriver, half a brain and google can quickly look up the specification of the internal switching components of the ATX and can soon realize most of the ratings on the ATX cases are complete bullshit, you only then have to cut a wire and count the wire strands.
I have 2* 50A@5v PSU I designed for FPGA mining back in the early days and even with single strand 2.5mm2 copper( 300v mains) the wires get hot…….
Legally many ATX are just skirting the regulations for consumer labeling requirements on honesty (in a pinch even a car engine can be started from a couple of 4R25 batteries, so technically you could state that they can supply 400A, the fact that they may melt and are totally destroyed is irrelevant)
Perhaps one of the worst things I have ever seen in a Chinese made ATX, was a 110/220 conversion done via a diode, rather than utilize a tapped transformer , they decided to save the cost of the copper windings by using the diode to 'clip' the mains cycle by 50% producing a shitload of heat and more filth(EMI) than a german porn movie.
I've been less active on the forums recently due to new projects and hope to post some new designs I have been working on that will further enhance the lifetime of the 19 port hub with the new multi chip bitfury miners.
But basically unless I have 100% personal faith in a product I will not sell it.
RF
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