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CGminer 3.12.3 Antminer U1

There is a new version cgminer available now, version 3.12.3. Works great with Antminer U1. Just run cgminer with these (extra) options:

 --icarus-timing=short --anu-freq 250

Hashrate is around 2 GH/s, I use a standard 12V Fans for some extra cooling.

freq(hex) freq(mhz) ghash/s
0781         200.0       1.600
0801        212.5         1.700
0881        225.0        1.800
0901        237.5        1.900
0981        250.0       2.000
0A01       262.5        2.100
0A81       275.0        2.200

I tried using anu-freq values above 250 but got >50% HW error on all devices.

antminer u1 cgminer 3.12.3

antminer u1 cgminer 3.12.3

The ANU 4 Antminer is my faulty one, don’t know why but this one has about 30 to 50% HW errors.

20140211-132503.jpg

BTMine V1 200GHs miner

We ordered two BTMine V1 200GHs miners from China. Shipping was later than promised but last week we got them from UPS. A lot people received th eminer damaged, some even with broken parts. Luckely we received them in good order, in one box 4 loose crews of the case but that’s no problem. Just to sure I removed the cover to check all parts, everything OK as far as I can see. I put them in my basement because they make quiet a lot of noise. I reduced fanspeed but then temperature raised. Now they are hashing at ±32 to 35 degrees with a fanspeed of 2500 to 2800 RPM. This week I will test and tune them some more.

BTM1 BTM2 2xBTmine200GhsV1-BTCguild

Some pictures of the rigs

There is one for sale here ! ships from the EU, payment in Euro or Bitcoins.

A movie of BTMine hashing



Antminer U1 mod & tune up

I have one “bad” Antminer U1. Well… bad… at stock Freq it runs fine, when I tune it to 0981 it has about 30% hardware errors. Time for some research and tune up. I took off the cooling plate with the antminer logo. There is no cooling pasta between the plate and the PCB but some kind grey rubber something. Must be conducting too I guess but threw it away. First I wanted to fit a huge CPU cooler from an old Dell PC but it’s a little overkill. I had an alumium heatsink, cut a bit off with a saw. Drilled two holes in it for the screws. Applied some thermal paste, fitted the heatsink and tightened the screw. Applied the Antminer cooling plate just for the looks.

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DIY Hashbuster Micro OC eXtreme

Do It Yourself Hashbuster Micro OC eXtreme Miner… well almost… I got 5 assembled PCBs without the Bitfury chips. Mission 1 succeeded. Mission 2: get 45 Bitfury chips a.s.a.p. Getting them fast is impossible but I ordered 50 pieces, delivery end of february or begin of march.

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USB Antminer U1

Some new gadgets, USB Antminer U1 SHA-256 Miner @ 1.6 to 2.6 GHS (with OC). These are not supported yet by the standard miningsoftware, used a modified cgminer, you can get it here: https://github.com/AntMiner/AntGen1. I put 5 Antminers in a Rosewill 10port Hub, put a 12x12cm Fan in front of it and fired it up. Tested some settings to get the best performance:

./cgminer --bmsc-options 115200:20 --bmsc-freq 0781 -o YOUR POOL URL -u WORKERNAME -p WORKER PASSWORD

with these setting you get stock hashrate of 1600MHs

./cgminer --bmsc-options 115200:20 --bmsc-freq 0881 -o YOUR POOL URL -u WORKERNAME -p WORKER PASSWORD

with these setting you get stock hashrate of 1600 to 1800MHs

./cgminer --bmsc-options 115200:20 --bmsc-freq 0981 -o YOUR POOL URL -u WORKERNAME -p WORKER PASSWORD

with these setting you get stock hashrate of 2000MHs. One strange thing with options 1 Antminer gets very much HW-error, the other 4 work fine.

Please be aware when you overclock them warranty will void (terms of us from the manufacturer) and you always should use proper cooling. The standard factory setting is bmsc-freq 0781.

Some screenshots:

Antminer -bmsc-freq 0971

Antminer -bmsc-freq 0971

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