Swedish ASIC miner company kncminer.com - page 76.

mindtrip

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Quote from: Searing on August 31, 2015, 10:49:26 PM

Quote from: GenTarkin on August 31, 2015, 04:45:46 PM

Quote from: vegasguy on August 31, 2015, 04:24:11 PM

Quote from: frenchy on August 31, 2015, 04:21:30 PM

I believe the tps 65217a was located on u16 on your last picture vegasthe eight chip near the lm 75.

I found this and it sounds like its on the controller :

https://github.com/KnCMiner/knc-asic/issues/2

Interesting, will the titan refuse to mine / power up if the LCD is not there rofl?!
Or tps65217 for that matter?

I was told (and it works) that you can take the LCD out of the port on a Titan to get an extra Port ..currently running 6 cubes on 1 controller using 2 1200i corsair PSU's. FYI

I can confirm I have 2 machines running like this they work great

Searing

copper member

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Clueless!

Quote from: GenTarkin on August 31, 2015, 04:45:46 PM

Quote from: vegasguy on August 31, 2015, 04:24:11 PM

Quote from: frenchy on August 31, 2015, 04:21:30 PM

I believe the tps 65217a was located on u16 on your last picture vegasthe eight chip near the lm 75.

I found this and it sounds like its on the controller :

https://github.com/KnCMiner/knc-asic/issues/2

Interesting, will the titan refuse to mine / power up if the LCD is not there rofl?!
Or tps65217 for that matter?

I was told (and it works) that you can take the LCD out of the port on a Titan to get an extra Port ..currently running 6 cubes on 1 controller using 2 1200i corsair PSU's. FYI

GenTarkin

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Quote from: 2112 on August 31, 2015, 07:48:55 PM

Quote from: GenTarkin on August 31, 2015, 07:30:46 PM

So, then the Temperature column on status page is strictly a ambient reading only =)

Well, I would really advise you to investigate markings on all chips on the board and see if any other contains something LM75-compatible. It should be fairly easy and safe to do the tests by touching the plastic cap of the chip with a soldering iron and look for any temperature readout to rise sharply.

The continuing popularity of an obsolete chip like LM75 was perplexing to me. Apparently it is still being used as in the last-resort over-temperature protection circuits. When not programmed in any way it will power-up as an over-temp protection set to trigger at 80 degrees Celsius.

On this miner it may be wired up to shut it down when the in-cube ambient temperature goes over 80C, which will serve as a sort of pre-fire-protection circuit even if the programmable controllers are hung or disconnected.

The firmware source code clearly shows its polling the LM75 IC for temperatures to populate the Temperature fields on STATUS page on webgui.

2112

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Quote from: GenTarkin on August 31, 2015, 07:30:46 PM

So, then the Temperature column on status page is strictly a ambient reading only =)

Well, I would really advise you to investigate markings on all chips on the board and see if any other contains something LM75-compatible. It should be fairly easy and safe to do the tests by touching the plastic cap of the chip with a soldering iron and look for any temperature readout to rise sharply.

The continuing popularity of an obsolete chip like LM75 was perplexing to me. Apparently it is still being used as in the last-resort over-temperature protection circuits. When not programmed in any way it will power-up as an over-temp protection set to trigger at 80 degrees Celsius.

On this miner it may be wired up to shut it down when the in-cube ambient temperature goes over 80C, which will serve as a sort of pre-fire-protection circuit even if the programmable controllers are hung or disconnected.

GenTarkin

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Quote from: 2112 on August 31, 2015, 07:24:45 PM

Quote from: GenTarkin on August 31, 2015, 05:43:02 PM

Well, my question regarding LM75 is , is it the sensor itself or is it just the IC for a remote sensor probe?

Well, the LM75 physical IC is for sure a local sensor only.

On the other hand, if you are looking at the code commented as "reading from LM75" there is a whole bunch of "LM75 register-compatible" ICs that could be using both local and remote sensors.

So, then the Temperature column on status page is strictly a ambient reading only =)

2112

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Quote from: GenTarkin on August 31, 2015, 05:43:02 PM

Well, my question regarding LM75 is , is it the sensor itself or is it just the IC for a remote sensor probe?

Well, the LM75 physical IC is for sure a local sensor only.

On the other hand, if you are looking at the code commented as "reading from LM75" there is a whole bunch of "LM75 register-compatible" ICs that could be using both local and remote sensors.

GenTarkin

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Well, my question regarding LM75 is , is it the sensor itself or is it just the IC for a remote sensor probe?

The Avenger

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Quote from: GenTarkin on August 31, 2015, 03:39:35 PM

Is the LM75 the actual temp sensor itself as well? if it is then measuring the temperature on that location of the board is purely a freaking ambient temp - "inside of the cube" temp ROFL! Thats quite useless, thanks KNC.

As far as I'm concerned, kfc put the LM75 as far as possible away from the chip to try to hide how stupidly hot their chips were getting. This was my thoughts the moment they released photos of the neptune boards.

Quote from: The Avenger on June 07, 2014, 08:55:07 AM

BTW, anyone else notice how they put the component that reports the chip temperature at the very *edge* of the board, far far away from the chip? Is this a tell that KNC expect Neptune to have heat/overheating problems?

If you have a few big fans blasting air over this, it is not going to report anywhere near the correct chip/board temperature. It looks like KNC are misrepresenting - by design

frenchy

newbie

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And the rtc clock on the six green leds plate between controller board and the Rpi......sorry i was confused.

frenchy

newbie

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Yes you are right i remember now the u16 on the boards are not tps 65217 but the chip for i2c/spi.
Grin

GenTarkin

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So, no not on the hashing board =) good.

vegasguy

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"Yobit pump alert software" Link in my signature!

Quote from: GenTarkin on August 31, 2015, 04:07:24 PM

Hey vegas are one of these on the hashing board? tps65217

I would think thats for the FPGA but double check.

vegasguy

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"Yobit pump alert software" Link in my signature!

If you remove the LCD screen, thats a 6th port to add a 6th cube.

Vegas

GenTarkin

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Quote from: vegasguy on August 31, 2015, 04:24:11 PM

Quote from: frenchy on August 31, 2015, 04:21:30 PM

I believe the tps 65217a was located on u16 on your last picture vegasthe eight chip near the lm 75.

I found this and it sounds like its on the controller :

https://github.com/KnCMiner/knc-asic/issues/2

Interesting, will the titan refuse to mine / power up if the LCD is not there rofl?!
Or tps65217 for that matter?

frenchy

newbie

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No it was on top of the molex connector on the controller.

frenchy

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Maybe under the lcd screen on the controller?

vegasguy

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"Yobit pump alert software" Link in my signature!

Quote from: frenchy on August 31, 2015, 04:21:30 PM

I believe the tps 65217a was located on u16 on your last picture vegasthe eight chip near the lm 75.

I found this and it sounds like its on the controller :

https://github.com/KnCMiner/knc-asic/issues/2

frenchy

newbie

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[/s]I believe the tps 65217a was located on u16 on your last picture vegasthe eight chip near the lm 75.

GenTarkin

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Hey vegas are one of these on the hashing board? tps65217

I would think thats for the FPGA but double check.

GenTarkin

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Quote from: frenchy on August 31, 2015, 03:37:23 PM

Hey vegas and gentarkin ,you have a lm75 on the controller board too!!!just take a look between the lcd display and the Rpi...

Rofl really?! well I dont think thats being polled for any info as per the webgui at least.
If it is then I have no idea wtf is going on =P

Is the LM75 the actual temp sensor itself as well? if it is then measuring the temperature on that location of the board is purely a freaking ambient temp - "inside of the cube" temp ROFL! Thats quite useless, thanks KNC.

But if it uses a remote temp line then where that remote temp thingy is... is a mystery, I would think somewhere near the ASIC package.

Whats funny is, if the LM75 itself is the thermometer and the DCDC's temps are just really the DCDC temps then ... we have NO fucking clue what the actual ASIC die temps are =P ..... engineering at its finest....

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