Topic: Block Erupter USB - Overclocking/ hacking ? - page 20. (Read 168765 times)

I've got enough to overclock and test , I may be new here but I'm not new to modding(Team Xecuter anyone?). I will post my results as well, should have my stuff on Wednesday.

Thanks¡¡ Resistors and crystals inconming¡¡¡¡



....how many time i break a usb?? :-D

they are different package sizes

example:
5032 = 5.0mm X 3.2mm  <--- the size on the erupter
6035 = 6.0mm X 3.5mm
3225 = 3.2mm X 2.5mm

I was just about to ask if these below were any good, and you just answer my question.

The list maybe useful to others and check out assorted resistors at the bottom... very handy.

CRYSTALS (5032)

13Mhz
http://www.ebay.com.au/itm/10pcs-13MHz-13-000MHz-active-Crystal-oscillator-5032-5-3-2-/140918779215

13.5Mhz
http://www.ebay.com.au/itm/10pcs-13-5MHz-13-500MHz-active-Crystal-oscillator-5032-5-3-2-/140918779206

14Mhz
http://www.ebay.com.au/itm/10pcs-14MHz-14-000MHz-active-Crystal-oscillator-5032-5-3-2-/130853541767

15Mhz
http://www.ebay.com.au/itm/10pcs-15MHz-15-000MHz-active-Crystal-oscillator-5032-5-3-2-/140918779208

16Mhz
http://www.ebay.com.au/itm/10pcs-16MHz-16-000MHz-active-Crystal-oscillator-5032-5-3-2-/130853541733

18Mhz
http://www.ebay.com.au/itm/10pcs-18MHz-18-000MHz-active-Crystal-oscillator-5032-5-3-2-/130853541729

19.2Mhz
http://www.ebay.com.au/itm/10pcs-19-2MHz-19-200MHz-active-Crystal-oscillator-5032-5-3-2-/140918779204

20Mhz
http://www.ebay.com.au/itm/10pcs-20MHz-20-000MHz-active-Crystal-oscillator-5032-5-3-2-/130853541806

22Mhz
http://www.ebay.com.au/itm/10pcs-22MHz-22-000MHz-active-Crystal-oscillator-5032-5-3-2-/140918779297

24Mhz
http://www.ebay.com.au/itm/10pcs-24MHz-24-000MHz-active-Crystal-oscillator-5032-5-3-2-/130853541783

RESISTORS (0805)
Resistor Assorted Kit Set 0805 50 Values X 50pcs Resistors 0Ohm-3.6K 5% 2500pcs
http://www.ebay.com.au/itm/Resistor-Assorted-Kit-Set-0805-50-Values-X50pcs-Resistors-0Ohm-3-6K-5-2500pcs-/140963247762

Thanks btct22 and others who's contributing to this great project.
Cheers

Here is where I got my current 16Mhz crystals: http://www.ebay.com/itm/130853541733?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

Thanks btct22¡¡ Can you share your ebay link where you buy crystals?

Thanks again¡

Hi, the correct size is 5032 - http://www.ebay.es/itm/10-PCS-16-000MHz-SMD-4-Pin-5032-16MHZ-16-000M-16M-Crystal-/121153438140?pt=LH_DefaultDomain_0&hash=item1c354ec1bc&_uhb=1

however the pins on these are not quite in the right place, these are right at the edge while the stock ones are in from the edge by about 1 mm.

If you are using bfgminer these should appear as BES (Block Erupter Sapphire), instead of ICA (Icarus). But you need to "brand" your block erupters for bfgminer to recognise them properly. There isn't much difference, except the settings and timings are slightly tweaked for optimal performance.

See: https://bitcointalksearch.org/topic/block-erupter-usb-branding-250326

What of this is the correct?:

http://www.ebay.es/itm/10-PCS-16-000MHz-SMD-4-Pin-5032-16MHZ-16-000M-16M-Crystal-/121153438140?pt=LH_DefaultDomain_0&hash=item1c354ec1bc&_uhb=1

http://www.ebay.es/itm/10-PCS-16-000MHz-SMD-4-Pin-6035-4Pin-16MHZ-16-000M-16M-Crystal-/121153438147?pt=LH_DefaultDomain_0&hash=item1c354ec1c3&_uhb=1

http://www.ebay.es/itm/10-PCS-16-000MHz-SMD-4-Pin-3225-16MHZ-16-000M-16M-Crystal-/121148541752?pt=LH_DefaultDomain_0&hash=item1c35040b38&_uhb=1

Thanks¡¡¡¡¡¡¡¡¡

Be aware that not all resistor are created equal most are 5% and good ones are 1% but some off ebay can be factory seconds and be off by 10% or more. If your getting them off ebay check the resistance before soldering them to confirm it's correct. Here are the ones that I've been using http://tinyurl.com/lzpfjbr

I'm using 1.5K (in an 0805 package) as R1, and the 16Mhz crystals are from a chinese eBay seller.  I've got some 16Mhz, 20Mhz & 24Mhz crystals coming from Digikey and will replace the current crystals shortly and post the results.  I'm looking to get the same speed Bluestreak66 has reported with a 16Mhz crystal.

Can somebody tell me what types of resistors these are?  What keywords and descriptions to look for?

+1

could you please give part numbers and/or links where to purchase.
it would be great help

Thanks.

What crystals are you using and what resistors? you have some nice low hardware errors

Here's my current miner output at diff 4. I'm looking at the avg as the device speed. ICA 7 is the only one not modified as a reference.

bfgminer version 3.1.3 - Started: [2013-08-12 12:56:15] - [  0 days 01:10:08]
-------------------------------------------------------------------------------
5s: 4.46 avg: 3.62 u: 4.28 Gh/s | A:1047 R:2+0(.19%) HW:40/.94%
ST: 0  GF: 0  NB: 11  AS: 0  RF: 0  E: 10.33  U:14.9/m  BS:2.5k
Block: ...cc0f03aa #251652  Diff:37.4M (267.7Th/s)  Started: [14:06:12]
-------------------------------------------------------------------------------

ICA 0:       | 537.8/365.3/445.0Mh/s | A:109 R:0+0(none) HW:6/1.4%
ICA 1:       | 341.9/365.2/424.6Mh/s | A:104 R:0+0(none) HW:5/1.1%
ICA 2:       | 415.3/364.4/457.3Mh/s | A:112 R:0+0(none) HW:6/1.3%
ICA 3:       | 434.6/363.0/404.2Mh/s | A: 99 R:0+0(none) HW:5/1.2%
ICA 4:       | 340.8/361.7/367.5Mh/s | A: 90 R:1+0(1.1%) HW:4/1.0%
ICA 5:       | 652.8/365.7/481.8Mh/s | A:118 R:0+0(none) HW:2/.47%
ICA 6:       | 533.8/367.7/457.3Mh/s | A:112 R:0+0(none) HW:3/.64%
ICA 7:       | 269.1/333.2/314.4Mh/s | A: 77 R:1+0(1.3%) HW:4/1.2%
ICA 8:       | 661.7/363.5/510.4Mh/s | A:125 R:0+0(none) HW:1/.23%
ICA 9:       | 612.7/366.4/416.5Mh/s | A:102 R:0+0(none) HW:4/.88%
-------------------------------------------------------------------------------

I had mine strapped to a heatpipe cooler, with the soldermask removed and the silicone sheet in between they were running quite cool at 447. Given the shortage of avalon chips right now these might just turn out profitable!  I am quite curious why your only getting 360Mhs that seems low to me.

Hopefully, bluestreak66 was saying the chips have a theoretical max of 1GH/s and that around 750MH/s would be the limit of these boards.  So hopefully I can get these higher frequencies going with water cooling and decent power supplies. More for fun than profit of course. I'd like to think I can get the BE's to pay for themselves in a year and they'll need all the help they can get.

Twice 360Mh??

It's not that bad, it's just changing R1 and the crystal.  The stock crystals needed to be removed anyway and they're quite a pain to unsolder for the first time, now I've got leaded solder on there when the new crystals arrive they'll be much easier to swap out and hopefully with the extra cooling I can get them to run at twice the speed they do now.  Right now I'm running them with extra heatsinking and fan cooling.

Seems like a lot of effort for 0.027Mh increase