Black Erupter USB
 May 08, 2015, 12:34:42 PM
Just a minor heads-up: in about an hour and a half (noon PST), the last in this series of contests will go live: Block Erupter USB - StickMiners Googly Eyes - 0.1BTC prize
May 07, 2015, 01:41:03 PM
Well all you'd need to do is replace the 12MHz oscillator with a 72MHz one - use a trimpot to find a value of R1 that runs it stable*, then flip the equation around to get sane (i.e. readily available) values for R1 and R2, and off you go**
 * presumably this involves liquid nitrogen cooling ** for practical silicon reasons, this wouldn't actually work Hopefully I'll get around to posting my mods before/around this weekend. In the mean time, there'll be a new contest along the lines of the Horizons one to get rid of the excess from the last 3 + a little extra to round it out. Keep an eye on my StickMiners thread for a pointer to that one. May 07, 2015, 12:16:51 PM
What? That's it? I don't understand!!! Where is the hack that takes a standard block erupter and turns it into an Antminer U2? Isn't it as simple as adding a large heatsink and clipping pin 3? Come on people!!! May 05, 2015, 01:39:00 PM
That was cool, congrats to the winners. I really liked the ingenuity of these hacks, well done!
May 04, 2015, 05:53:58 PM
After quick yet careful review, I've decided on the following ranking:
Everybody's winnings will be paid out to the address of their choice (post here or in PM) - please don't forget to sign the message so the transaction doesn't disappear into the void. I will be posting some of my own mods and related bits and pieces here in the next few days as well May 04, 2015, 02:26:25 AM
It's been 2015-05-04 12am PST - the contest is now officially closed, and the winners will be announced later today
May 04, 2015, 12:27:38 AM
Winter is well on it's way here in New Zealand, so I'm going to use some of my overclocked Erupters (crystal swapped out, all 7 running at ~430Mh/s each) for another useful purpose apart from the odd satoshi here and there - heating my feet!
I used an old router case I had lying around + a 7 port hub. Fortunately this hub's port orientation means that each Erupter is perfectly flush with the metal case. If it gets too hot, the hub has individual switches for each port, providing built in temperature selection options. Each Erupter is firmly attached to the metal with double sided heatsink tape. There are 4 of them concentrated around where my toes will be and 3 more for general warmth. I still need to pipe in a couple of amps of external power from my PC's power supply to the hub's power port, but I'm running out of time to get that done, so I thought I'd post a few pictures of the mod now. I'll follow up with an IR temp reading of the metal surface when in use if this entry gets anywhere    May 03, 2015, 01:57:19 PM
April 30, 2015, 08:17:48 PM
My UARTs for underclocked S1 blades. Turning these off this weekend but was a fun project. 8 of them do 400GH.
 Even found a use for the 49-port hub! April 25, 2015, 10:11:51 PM
Where are all the hacks? I want to see the hacks!! I recall seeing pics of Block Erupters cooled in oil, insane cooling solutions, stands made out of wood, metal, Lego, and even cardboard boxes.
April 20, 2015, 09:27:58 PM
OK.. I had about 30 of these things running at one point.
Because I preferred to run my Block Erupters with passive cooling, I always removed the heat spreader and epoxied them to proper heat sinks as soon as they arrived. I realized I had an 'ideal heat sink' for the last three I bought. Behold! The 1GH/s coffee warmer with integrated hub... What wasted heat??    Ideally, one would overclock them or run more than three for the extra heat, but my laptop would only run three stock Block Erupters per USB port before a powered hub was needed. I didn't want to deal with extra cords. These three avoided the early retirement faced by the other Block Erupters when more efficient hardware arrived.  I eventually retired the mug to my office bookshelf, until today. I once left the coffee mug on the kitchen counter (with the cables and hub removed), and the wife ran it through the dishwasher. It survived, and still works today.  April 20, 2015, 01:57:09 AM
I got quite into modding my BE's - I kept one stock one and all the others got at least a crystal replacement and extra heatsinks.
These two I got running at almost double the normal speed, clamped between two finned heatsinks. They had the inductor removed and were directly powered with a variable power supply. This rig was running for months under my desk on top of my PC.   April 19, 2015, 03:34:32 PM
Looking back I see I got those kits from member rumak and ebay, but I did get my blade kits from sidehack.
Come on guys, are you going let my hack job hack take this win, lets see em'!  April 18, 2015, 04:06:36 PM
I might point a BM1384 board at it if I can talk one into running at 6MHz instead of 100+
April 18, 2015, 03:57:01 PM
Be sure to throw one at the mining lottery - just not the overclocked ones, as it seems you'd be quickly disqualified!
April 18, 2015, 03:09:45 PM
I did put out Blade kits, but nothing for the Block Erupter (except sending a handful of parts to one friend). I had at one time seventeen custom-overclocked to 460MH/s but I didn't make any kits for them. I think I still have two, one that works and one that smoked - I also killed the first one while trying to overclock.
I was thinking it might be interesting to rig up a BE with a software-adjustable voltage and clock but I don't think there's enough free pins on the micro. Maybe hardware-adjustable would be good enough. April 17, 2015, 08:26:38 PM
I'm not expecting to even place but someones gotta get the ball rolling. True that - easy money, too, if yours remains the only entry  Bad heat sink placement and amateur soldering skills led to this ones death. That poor thing  I cant imagine why anyone would mine bitcoins with these anymore, do tell. Three days of mining for a chance at BTC0.1 - mining with a Block Erupter USB hasn't been this profitable since.. ever?Block Erupter USB Three Days of Mining lottery 2015 April 17, 2015, 08:08:18 PM
Just to note, the contest does mention specifically: Here's some things that have been done before and aren't going to score very high unless it's exceptional work: Looks like you also messed with R1 for overclocking? If you're an electronics geek by now, have a look at the LED and how it's being driven. Funky. Long since retired I had dozens of these running 24/7 for a few months, Overclocked with sidehacks kits. Time to bring it (or possibly another) out of retirement! Details soon I'm not expecting to even place but someones gotta get the ball rolling. Bad heat sink placement and amateur soldering skills led to this ones death. Its the only one that died early. I guess I kept him for nostalgia's sake. all the others worked until I sold them on ebay long ago. I over clocked some blades too, those were the days. I remember reading something about that funky LED driver, it got to be over my head. I cant imagine why anyone would mine bitcoins with these anymore, do tell. April 17, 2015, 06:44:12 PM
Just to note, the contest does mention specifically:
Here's some things that have been done before and aren't going to score very high unless it's exceptional work: Looks like you also messed with R1 for overclocking?If you're an electronics geek by now, have a look at the LED and how it's being driven. Funky. Long since retired I had dozens of these running 24/7 for a few months, Overclocked with sidehacks kits. Time to bring it (or possibly another) out of retirement! Details soon Jump to:
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