We are currently calculation on 50 units because thats the minimum value to perform a order
Calculations:
Eache unit takes app. 510 mA
Maximum Block Erupter USB's connected per computer: 127 - numbers of USB hubs
Choosed USB hub to use:
LOGILINK 7-PORTS USB 2.0 PSU 3.5A and 2 units of 10 ports USB Hubs
Or we can use 1 24 ports device
With a power consumption at 510mA and a PSU that gives 3.5A we get = 3500/510 = 6,86 rounding it down to 6
With 6 units / hub we need 50/6 = 8,33 but that's not the whole truth!
This is just one way to connect the devices on the minimal usb ports without connecting more than 2 hubs in series
If the computer have for example 6 USB port, then can some hubs get plugged into them directly.
---> USB Hub #2 Hosting unit 1-6
---> USB Hub #3 Hosting unit 7-12
---> USB Hub #4 Hosting unit 13-18
10 ports ---> USB Hub #5 Hosting unit 19-24
1 USB port --> USB Hub #1 ---> USB Hub #6 Hosting unit 20-25
---> USB Hub #7 Hosting unit 26-31 Number of units connected: 21 Hubs and 106 Block Erupter USB's = 126 units
---> USB Hub #8 Hosting unit 32-37
---> USB Hub #9 Hosting unit 38-43
---> USB Hub #10 Hosting unit 44-49
---> USB Hub #11 Hosting unit 50-55 Units left: 127 - 66 = 61
---> USB Hub #13 Hosting unit 56-61
---> USB Hub #14 Hosting unit 62-67
---> USB Hub #15 Hosting unit 68-73
10 ports --->USB Hub #16 Hosting unit 74-79
2 USB port --> USB Hub #12--> USB Hub #17 Hosting unit 80-85
---> USB Hub #18 Hosting unit 86-91
---> USB Hub #19 Hosting unit 92-97
---> USB Hub #20 Hosting unit 98-103
---> USB Hub #21 Hosting unit 104-109
---> Hosting unit #105
3 USB port --> Hosting unit # 106
After unit 106 or something nearly whe have to use another hosting machine, but that is not at problem beacuse we have some computers fits very well for it's purpose
As you maybe understands it will cost some just get 50 units online. We have calculated that the trading setup fee that gives us app. 1450SEK in profit, the fun thing is that the hub only cost app. 1400SEK. So we aint earning any big profit, we are even going to lose som money at the beginning, but we have som money to back it up with.
//nordicbtcminers crew