ANTMINER C1 Discussion and Support Thread

[Photon939]

Seems like as long as the SD card is good, the C1 is a very reliable miner. I had some issues with mine on startup but wiping the SD card and uploading Dogie's original disk image got me up and running.

Anyone have better uptime yet?

What is your voltage setting? 0760?

0725, that was the default for the image I used, haven't had any X on the ASICs

[1714474581]

1714474581

[Intrepid One]

Someone asked if the fans would slow down if the temps were lower
My fans slow down to 1200 on 2 of my C1's and 1320 on the other when the temps are low ( 20c)

[opentoe]

C1 arrived in a record time. Miner is ok, but the cooling kit is the worst thing i have ever seen. The water pump leaked on the first power up and died after 1 minute work, wiring for the fans is bad soldered and the wires are so thin, tubes for the radiators soften if the miner has temperature over 40C. They should take care about this. Syscool should raise the price for 5-10 usd and sell quality not quantity ! ! ! Next purchase will be only miner. I dont need crap

Only bad thing about this miner is the cooling kit. I replaced my defective fans (the ones Bitmain wouldn't honor with an RMA on a brand new C1) with a high quality high CFM, but quiet fan and is keeping my temps down 2 degrees across the board.

I had one broken fan - out of the box.

What make/model of fan did use for the replacement?

Any high quality 1200-1500CFM ball fan will do. Some of the better ones have lifetime warranty, which you can't beat. WWW.NEWEGG.COM carries a lot of different fans.

[opentoe]

I have a C1 that's slowly dying on me.

Power supply checked.
Raised voltage to 760.
Checked pump.
Tried different pools.
Checked all connections.
Re-flashed.
Tried different out in house.


So what's going on now? I've only had a few weeks of problem free mining with these guys, then it is constant attention and tinkering to get them to hash normally. Starting to drive me crazy. Thinking of selling all my C1's and just get another Spondoolie. They are as stable as our earth's orbit.

The temps are good. No X's. What's the problem now?

[Antuam]

Hello

Opentoe, I know one person with the same problem with one C1 bath 1.

We configure the miners with standard voltage 0725, the chips to 256Mhz save and aply. Wait 1 minute for save and apply and turn off the miner 1 minutes. Turn on and wait 10 minutes. In the hash rate is less of 900Gh, we continue turn off, wait 1 minute and turn on again until the hast rate is near or 1Th.

Please, is important wait 1 minutes  between turn off and turn on.

Regards.
Antuam.

[aclass]

That's one hell of a hack

Hello

Opentoe, I know one person with the same problem with one C1 bath 1.

We configure the miners with standard voltage 0725, the chips to 256Mhz save and aply. Wait 1 minute for save and apply and turn off the miner 1 minutes. Turn on and wait 10 minutes. In the hash rate is less of 900Gh, we continue turn off, wait 1 minute and turn on again until the hast rate is near or 1Th.

Please, is important wait 1 minutes  between turn off and turn on.

Regards.
Antuam.

[opentoe]

Hello

Opentoe, I know one person with the same problem with one C1 bath 1.

We configure the miners with standard voltage 0725, the chips to 256Mhz save and aply. Wait 1 minute for save and apply and turn off the miner 1 minutes. Turn on and wait 10 minutes. In the hash rate is less of 900Gh, we continue turn off, wait 1 minute and turn on again until the hast rate is near or 1Th.

Please, is important wait 1 minutes  between turn off and turn on.

Regards.
Antuam.

Really? This is actually a batch 2 unit, but anything to try I guess. The longer it runs, the lower the hashrate. So I'm thinking a buggy firmware with a memory leak that's killing it because when I power cycle it, jumps back up to 1005TH and then slowly starts dropping, real slow.

I'll try this "trick" once it gets back down to 900 again.

Thanks.

[dogie]

Hello

Opentoe, I know one person with the same problem with one C1 bath 1.

We configure the miners with standard voltage 0725, the chips to 256Mhz save and aply. Wait 1 minute for save and apply and turn off the miner 1 minutes. Turn on and wait 10 minutes. In the hash rate is less of 900Gh, we continue turn off, wait 1 minute and turn on again until the hast rate is near or 1Th.

Please, is important wait 1 minutes  between turn off and turn on.

Regards.
Antuam.

Really? This is actually a batch 2 unit, but anything to try I guess. The longer it runs, the lower the hashrate. So I'm thinking a buggy firmware with a memory leak that's killing it because when I power cycle it, jumps back up to 1005TH and then slowly starts dropping, real slow.

I'll try this "trick" once it gets back down to 900 again.

Thanks.

Which pool is it on? I don't think its the solution but worth a shot.

[dogie]

You could plug the pump directly to one of the hashing board headers

Has anyone tried this?  Could feedback response time be a problem?  Constantly running the pump at a set speed that would be less a problem but slow that fluid down and this could warm up quickly. 

I suspect I will absolutely need an outdoor pre-cooler once it gets warm this spring.  I have a thermostat circuit I use for a DIY egg incubator.  Less difficult controlling a 12vdc pump to put water onto an outdoor pre-cooler that will have air passing over it.  The system isn't pressurized so the sensor can be mounted in the water outflow of the pre-cooler.  I lived in Tuson back in the early 1970's and the place had a cooler on the roof.  A large box-like enclosure with the 4 sides having material much like air conditioning filter material.  Water would pass down thru the material and in the center air was sucked into the home.  It's very dry in Arizona so it worked there without the home becoming too humid.  Running water over an outdoor pre-cooler wouldn't raise the humidity of the home here.  Georgia is much more humid than Arizona.

The first harness did this it was not the greatest.  If you make one with higher quality wire and keep wires from touching each other it could work.

I would personally go for molex to fan connector.  You get a constant speed. With it you don't get a variable speed, but you will always have it being powered when unit is on.  Also saves troubles you will see twords first of thread.

That cable wouldn't send any PWM signals and I don't believe the pump would accept them anyway. It looks like its a fixed voltage pump with the 4th pin unconnected to the actual harness. The other 3 pins would be +12, -ve and rpm sens.

[Antuam]

I'll try this "trick" once it gets back down to 900 again.

Thanks.

[/quote]

Or you can put something in Schedules Tasks for reboot the miner.

In S3, I write it to reboot each 6 hours.

0 */6 * * * /sbin/reboot

Regards.
Antuam

[Tupsu]

..... It looks like its a fixed voltage pump with the 4th pin unconnected to the actual harness. The other 3 pins would be +12, -ve and rpm sens.

dogie- You're wrong again.
Write the better things that you know.

C1 not only regulate pump speed, C1  even shows the speed of the pump.

[grn]

You could plug the pump directly to one of the hashing board headers

Has anyone tried this?  Could feedback response time be a problem?  Constantly running the pump at a set speed that would be less a problem but slow that fluid down and this could warm up quickly. 

I suspect I will absolutely need an outdoor pre-cooler once it gets warm this spring.  I have a thermostat circuit I use for a DIY egg incubator.  Less difficult controlling a 12vdc pump to put water onto an outdoor pre-cooler that will have air passing over it.  The system isn't pressurized so the sensor can be mounted in the water outflow of the pre-cooler.  I lived in Tuson back in the early 1970's and the place had a cooler on the roof.  A large box-like enclosure with the 4 sides having material much like air conditioning filter material.  Water would pass down thru the material and in the center air was sucked into the home.  It's very dry in Arizona so it worked there without the home becoming too humid.  Running water over an outdoor pre-cooler wouldn't raise the humidity of the home here.  Georgia is much more humid than Arizona.

My first 2 are still set up like this (didn't like the look of the supplied harness) I have one pair of fans on a splitter, pump, main fan, one rad fan direct to pcb. The pump is variable and quieter connected this way but temps are about 1deg higher.

[soy]

My C1 might arrive on Monday, day after tomorrow.  I'm looking forward to laying eyes on one of these machines.

[dogie]

..... It looks like its a fixed voltage pump with the 4th pin unconnected to the actual harness. The other 3 pins would be +12, -ve and rpm sens.

dogie- You're wrong again.
Write the better things that you know.

C1 not only regulate pump speed, C1  even shows the speed of the pump.

I said I think, no need to be so aggressive. Then, when using the harness, its varying the voltage of everything on it down. But to answer the original question, its not using PWM.

[navigatrix]

My C1 might arrive on Monday, day after tomorrow.  I'm looking forward to laying eyes on one of these machines.

Mine arrived last week. (It was totally a 'gotta have that gadget' buy.) I bought the batch 1 with the cooling rig.

It was a blast to put together and looks like it belongs on the Tardis. Besides being a power hog (816 watts), it is working.
For awhile the hash rate was gyrating between 600 and 1400 GHs but it has leveled out. I'm not sure why. Yesterday I re-arranged my setup and took measurements with my Kill-a-watt power strip, so all of my miners were turned on and off several times.

Since I have the radiator sitting in an open window, I may turn the fans around so they suck the cool outside air in, rather than blow the inside air out. Can't turn the whole radiator around because of the plumbing.

Question for dogie or anyone else more electically inclined than me:

I had 2 S3+'s on a 1000W EVGA G2 80+ gold PSU, and the meter showed they were using 1050 w! I put them on a 1300w EVGA and they immediately metered at just under 800w (expected as the frequencies are bumped a bit).
I put the C1 on the same 1000W PSU and it meters at 816 and no problem.
Anyone have an idea of why the high watts with the S3's?

[opentoe]

Hello

Opentoe, I know one person with the same problem with one C1 bath 1.

We configure the miners with standard voltage 0725, the chips to 256Mhz save and aply. Wait 1 minute for save and apply and turn off the miner 1 minutes. Turn on and wait 10 minutes. In the hash rate is less of 900Gh, we continue turn off, wait 1 minute and turn on again until the hast rate is near or 1Th.

Please, is important wait 1 minutes  between turn off and turn on.

Regards.
Antuam.

Really? This is actually a batch 2 unit, but anything to try I guess. The longer it runs, the lower the hashrate. So I'm thinking a buggy firmware with a memory leak that's killing it because when I power cycle it, jumps back up to 1005TH and then slowly starts dropping, real slow.

I'll try this "trick" once it gets back down to 900 again.

Thanks.

Which pool is it on? I don't think its the solution but worth a shot.

I tried Ghash and BTCGUILD. Both steadily dropped the hashing rate to 900 on two of thrm now. Regretting a little a bought 6 of them dince only two are performing at spec.

[Sakarias-Corporation]

So i got a C1 from Bitmain. guess what ? there were RUST EVERYWHERE! in the screws, water block, on the board itself, the link between the Blocks was broken and i and to replace it. the board itself was wet from Rust-water. my C1 was shipped filled with water that leaked out allover the C1 and Destroyed it. i managed to repair it for 100 Dollar, but was given No compensation what so ever.

[tarmi]

So i got a C1 from Bitmain. guess what ? there were RUST EVERYWHERE! in the screws, water block, on the board itself, the link between the Blocks was broken and i and to replace it. the board itself was wet from Rust-water. my C1 was shipped filled with water that leaked out allover the C1 and Destroyed it. i managed to repair it for 100 Dollar, but was given No compensation what so ever.

when did you order?

[Sakarias-Corporation]

So i got a C1 from Bitmain. guess what ? there were RUST EVERYWHERE! in the screws, water block, on the board itself, the link between the Blocks was broken and i and to replace it. the board itself was wet from Rust-water. my C1 was shipped filled with water that leaked out allover the C1 and Destroyed it. i managed to repair it for 100 Dollar, but was given No compensation what so ever.

when did you order?

it arrived for 1 week and 6 days ago. so just a couple of days before that. shipping was Fast.

[dunand]

Simple harness mod to control voltage for the radiator fans. The radiators fans makes too much noise on 12v. I want to run the pump on 12v and choose the voltage to power the fans between 12v, 8.7v, 7v and 5v!

I have a second batch harness with a 6-pin connector. I changed wires from the connectors with 4 18awg wires. The 4 wires are connected to 12v, 5v, 3.3v and ground from an aux connector on the power supply. I added a terminal strip to choose which voltage I want to use.  The best setting I found is to run the fans on 7v (12v-5v). At 7v I barely notice the noise and the temperature is only 1 or 2 degrees higher. At 5v I have to look to know if the fans are running but it is a little bit less efficient at cooling and the miner fan need to run faster to compensate.