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Bitcoin / Hardware / Re: Block Erupter USB - Overclocking/ hacking ?

on: September 20, 2013, 03:37:26 AM

well after some trial and error I finally got a external power supply working Then after a few hours it caught fire lol! using a LM2596 Buck Converter now for one Block erupter. Had to add a stupid big heat sink to it. 18.24 mhz I think now http://gyazo.com/8932ae44f3d9ea693a56f54546ff8979 501 mh/s solid other 2 are over clocked also ^_^ just not as much the power supply 16.0mhz First one is taking 1.04 amps @5v from modded usb hub 16.something mhz Second is taking 1.15 amps @5v from modded usb hub Third No clue!

Bitcoin / Hardware / Re: Block Erupter USB - Overclocking/ hacking ?

on: August 12, 2013, 06:39:11 PM

Quote from: btct22 on August 12, 2013, 02:09:55 AM 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% ------------------------------------------------------------------------------- What crystals are you using and what resistors? you have some nice low hardware errors

Bitcoin / Hardware / Re: Block Erupter USB - Overclocking/ hacking ?

on: August 08, 2013, 05:55:47 AM

oh wow this cant be right. what is my block erupter doing? Holly cow! This can't be correct I was running a stability test and iit just started mining like crazy! did cgminer just go stupid or something?

Bitcoin / Hardware / Re: Block Erupter USB - Overclocking/ hacking ?

on: August 08, 2013, 01:53:01 AM

Got 3 new block erupters to play with Can you guess what one is overclocked Using a 16.386mhz crystal and replaced r1 with a 1.2kohm resistor. Put a large heatsink on and everything looks stable dare I try 18.43mhz?

Bitcoin / Hardware / Re: Block Erupter USB - Overclocking/ hacking ?

on: August 05, 2013, 06:37:30 PM

oh wow my page was featured on HackADay http://hackaday.com/2013/08/05/overclocking-your-bitcoin-miner/

Bitcoin / Hardware / Re: Block Erupter USB - Overclocking/ hacking ?

on: August 05, 2013, 12:58:11 PM

Quote from: joeventura on August 05, 2013, 03:14:56 AM I asked the same question on your website, Can you just swap the crystal to 14 or 16 and nothing else and get increased results? The lowest crystal speed that I was able to use without changing the voltage was 13.5 mhz. Wasn't much of a speed increase but was noticeable. Though with out changing the voltage resistors you may get more mining hardware errors. I updated my page with this info

Bitcoin / Hardware / Re: Block Erupter USB - Overclocking/ hacking ?

on: August 05, 2013, 01:59:02 AM

I took everything I learned so far and make a post on my website: http://wtfmoogle.com/?p=3334 How to overclock your Block Erupter and Possibly Destroy it in the process.

Bitcoin / Hardware / Re: Block Erupter USB - Overclocking/ hacking ?

on: August 04, 2013, 01:22:38 AM

Bad news... I popped it I had it working with a 20 mhz crystal for 5 minutes still was testing the hash rate... then it stopped responding. Now cgminer cant identify it, even with the stock resistors and crystal in place I felt so bad, why I didn't post anything in a while. On another note I figured out my clock gen circuit was putting out 5v not the 3.3 it should have been. Chances are this is what killed the chip not the speed. still though I popped it Got 3 more coming in the mail soon I wonder if I could get a replacement chip cheep?

Bitcoin / Hardware / Re: Block Erupter USB - Overclocking/ hacking ?

on: July 25, 2013, 11:41:13 PM

Might be a issue with my clock source setup. Used a 74f04 hex inverter IC to get the crystal oscillating. Might have the wrong capacitance on the crystal. but My block erupter likes to run with a 16 mhz crystal installed and a active mini fan cooling system changed the voltage resistors to 1.2k Hashing is all over the place between 390-500 mh/s Im wondering if this is my cgminer settings? sometimes the status led stays on for a bit of time as though it is waiting for work.

Bitcoin / Hardware / Re: Block Erupter USB - Overclocking/ hacking ?

on: July 25, 2013, 06:49:56 PM

Just got my crystal oscillator circuit built and installed onto my block erupter. Without changing the voltage I can get stable output with a 13.5mhz crystal that is 378 mhz. averaging 350-360 mh/s Still need to test more.

Bitcoin / Hardware / Re: Block Erupter USB - Overclocking/ hacking ?

on: July 21, 2013, 01:19:11 AM

Ok Ive done quite alot of work today on overclocking Pin outs updated with more info Highres http://wtfmoogle.com/wp-content/uploads/2013/07/bepinouts2.0.jpg Got some info from friedcat today "The multipliers of our chips are fixed (28x), so you could only change the oscillator frequency to achieve higher internal frequency. The oscillator of choice (12MHz) is fixed so overclocking will involve re-soldering of a new oscillator with higher frequency. Also, the resistor controlling AOZ1021's output voltage needs change. Best regards, friedcat" So I am working up a order for the parts needed to overclock My Target speed is 400mhz. It is not a simple crystal, you need a oscillator to do the overclocking. Still Need to reverse the power section of the asic to determine how to increase the voltage. I also have a programmable oscillator on its way so I can fine tune the speed of the asic (up to 800mhz if it can take it but i doubt it :p )

Bitcoin / Hardware / Re: Block Erupter USB - Overclocking/ hacking ?

on: July 20, 2013, 04:18:02 AM

So.. I can finally post here Started working on overclocking and abusing the Block Erupter From what info I have found "Each chip's rated frequency is 336MHz at 1.05V The chips work stable and well at 392MH/s at 1.15V. Further overclocking needs proper handling of heat and power supply." So I started looking into how to boost things up. Simple start... the soldermask on the back of the board... this will prevent good heat transfer. I am planning on polishing my boards up better but simply scratching the solder mask off carefully under a microscope could be polished up better. Same can be said about the asic. very porous and could be smoothed out for better heat transfer to a heat sink. I started to reverse engineer the board completely. High Res warning http://wtfmoogle.com/wp-content/uploads/2013/07/bepinouts1.0.jpg I have a feeling the speed of the asic is controlled by the firmware in the attiny I would kill for a full detailed schematic or chip spec of the asic. Can anyone get me one? Firmware of the attiny would be nice too

Other / Beginners & Help / Re: Moogle's random first post as he cant add anything to any topic he wants to

on: July 20, 2013, 01:03:47 AM

Started working on the chip pinouts of the board. HighRes photo http://wtfmoogle.com/wp-content/uploads/2013/07/bepinouts1.0.jpg Things are getting interesting

Other / Beginners & Help / Moogle's random first post as he cant add anything to any topic he wants to

on: July 19, 2013, 08:53:04 PM

So I Realized I cant post on any of the topics I really wanted to contribute to until I post something in this section. What I am currently working on is hacking the block erupter to allow overclocking and documenting the board better. What I have found out is quite extensive so far. One Interesting fact is a single block erupter on powered hub will introduce noise onto the hubs power line. Anyone else have this issue?

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