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Topic: High Efficiency FPGA & ASIC Bitcoin Mining Devices https://BTCFPGA.com - page 90. (Read 218478 times)

hero member
Activity: 504
Merit: 500
Fair enough, Tom. I think "definitely concerned" was a little strong, I wasn't worried about you stiffing me or anything, I just was disappointed that my e-mail got lost.
hero member
Activity: 896
Merit: 1000
Buy this account on March-2019. New Owner here!!
Anyone that currently has an order in will get their units in this next production run (unless I have personally told you otherwise)

As far as not responding to emails, there are dozens of customers who can testify to the fact that I respond to most emails in the same day, I apologize if your email from the 23rd did not get a reply, it likely got buried in a pile of emails which is bound to happen eventually - if you dont get an email reply and you are concerned for whatever reason there are several ways to get a hold of me right away.

You can

(a) call 315-514-0269 (or text)
(b) PM me on the forum - you will definitely get a response in 1-2 days
(c) catch me on freenode irc network #btcfpga (I am there every day during working hours)


I am very active on this forum / IRC and very easy to get a hold of so please do not let an email going by for a week without a response cause you for concern, ive been an active member of this forum since April of 2011 and I am not going anywhere! Smiley

hero member
Activity: 504
Merit: 500
usually my email responses are very quick.

I sent an e-mail Aug 23 and have yet to get a response. (regarding order 215) I figure i'm in the next production run from this thread, but not getting an e-mail reply definitely concerned me.
legendary
Activity: 1600
Merit: 1014
Thanks for your swift reply, especially considering it's Saturday.
Regarding the discount I believe it was still on your website at the date I ordered, please double check that.
This lets me feel tricked at the moment... Did you give notice here on the forum somewhere? Of course I didn't deem it necessary to make a hard copy of your site, I'm a trusting guy basically.


Hi, I ordered one modminer quad on the 8th of August, I didn't receive a shipment notice so far.
Also I have something in mind that you guaranteed a 4 weeks maximum incl. shipment or otherwise I am entitled for a 100$ discount? How does that work?
I payed with credit card, I never made a charge back so far but I guess it will get more and more difficult after a certain time, so I get a little nervous here.
Also your communications - I asked twice for the measurement of the screw holes to build myself a housing, no answer.
I also asked if you use any of the 5V on the molex connector because I am thinking of another more efficient 12V only power supply.

My order number is 181, please inform me of

*ETA
*discount
*screw hole measurement / 5V of the molex

Thank you


I am sorry if I did not email you back I had forwarded your email to my hardware guy so he could answer your specific technical questions but your email must of gotten lost in the shuffle some place, usually my email responses are very quick.

Your order will be shipping after I receive this next production run on 09/06

as far as the discount I am sorry but we discontinued that in the beginning of July

I will get your technical questions answered right away.

thank you for your business

-Tom
hero member
Activity: 896
Merit: 1000
Buy this account on March-2019. New Owner here!!
Hi, I ordered one modminer quad on the 8th of August, I didn't receive a shipment notice so far.
Also I have something in mind that you guaranteed a 4 weeks maximum incl. shipment or otherwise I am entitled for a 100$ discount? How does that work?
I payed with credit card, I never made a charge back so far but I guess it will get more and more difficult after a certain time, so I get a little nervous here.
Also your communications - I asked twice for the measurement of the screw holes to build myself a housing, no answer.
I also asked if you use any of the 5V on the molex connector because I am thinking of another more efficient 12V only power supply.

My order number is 181, please inform me of

*ETA
*discount
*screw hole measurement / 5V of the molex

Thank you


I am sorry if I did not email you back I had forwarded your email to my hardware guy so he could answer your specific technical questions but your email must of gotten lost in the shuffle some place, usually my email responses are very quick.

Your order will be shipping after I receive this next production run on 09/06

as far as the discount I am sorry but we discontinued that in the beginning of July

I will get your technical questions answered right away.

thank you for your business

-Tom
legendary
Activity: 1600
Merit: 1014
Hi, I ordered one modminer quad on the 8th of August, I didn't receive a shipment notice so far.
Also I have something in mind that you guaranteed a 4 weeks maximum incl. shipment or otherwise I am entitled for a 100$ discount? How does that work?
I payed with credit card, I never made a charge back so far but I guess it will get more and more difficult after a certain time, so I get a little nervous here.
Also your communications - I asked twice for the measurement of the screw holes to build myself a housing, no answer.
I also asked if you use any of the 5V on the molex connector because I am thinking of another more efficient 12V only power supply.

My order number is 181, please inform me of

*ETA
*discount
*screw hole measurement / 5V of the molex

Thank you
legendary
Activity: 1027
Merit: 1005
On your wiki, http://wiki.btcfpga.com/index.php?title=Software, there is a link to BFGMiner compiled for the raspberry pi. Is this the only version for the pi or can the latest version work too?

Yes you can use the latest version of BFG and I would recommend it if you don't mind compiling it yourself

I was just providing a binary which I really need to update.



Ok, Ive never compiled anything in linux before, but it cant be that hard, I'll give it a try.
hero member
Activity: 896
Merit: 1000
Buy this account on March-2019. New Owner here!!
On your wiki, http://wiki.btcfpga.com/index.php?title=Software, there is a link to BFGMiner compiled for the raspberry pi. Is this the only version for the pi or can the latest version work too?

Yes you can use the latest version of BFG and I would recommend it if you don't mind compiling it yourself

I was just providing a binary which I really need to update.

legendary
Activity: 1027
Merit: 1005
On your wiki, http://wiki.btcfpga.com/index.php?title=Software, there is a link to BFGMiner compiled for the raspberry pi. Is this the only version for the pi or can the latest version work too?
hero member
Activity: 896
Merit: 1000
Buy this account on March-2019. New Owner here!!
its an official release now (thanks Luke-Jr)

Everyone should upgrade their mining software to the latest version of BFGMiner, the new clocking algorithm is much better and you should see better performance and stability.

Latest release: 2.7.5 (announcement & changes)

Features:
  • A variety of device drivers for Bitcoin (SHA256d):
  • Scrypt mining support for both CPU and OpenCL (GPU)
  • Very low overhead free C code for Linux and Windows with very low CPU usage
  • Long poll support - will use longpoll from any pool if primary pool does not support it
  • epoll support for interrupting FPGA waiting when new work is available without timeout-looping
  • Self detection of new blocks with a mini-database for slow/failing longpoll scenarios, maximum work efficiency and minimum rejects
  • Heavily threaded code hands out work retrieval and work submission to separate threads to not hinder devices working
  • Caching of submissions during transient network outages
  • Preemptive fetching of work prior to completion of current work
  • Local generation of more valid work (rollntime) whenever possible, as supported on a per-work item basis
  • Prevention of stale work submission on new block (submitold also supported)
  • Automatically detects failing pools and disables them
  • Multi-device support (all or discrete selection)
  • Summarised and discrete device data statistics of requests, accepts, rejects, hw errors, efficiency and utility
  • Watchdog thread to restart idle threads but not crash machine if they don't respond
  • Summary displayed when quitting
  • Supports multiple pools with multiple intelligent failover mechanisms
  • On the fly menu based management of most settings
  • Trickling of extra work to backup pools if primary pool is responding but slow
  • On the fly enabling/disable/restarting of devices
  • Device temperature monitoring (for devices that support it)
  • Reuses persistent connections when possible
  • RPC +/- JSON interface for remote control
  • Ability to cope with slow routers
  • X-Reject-Reason support
  • Lots of other stuff I can't remember. See options.

hero member
Activity: 896
Merit: 1000
Buy this account on March-2019. New Owner here!!
I encourage everyone and anyone who is running a ModMiner Quad in linux to download the latest BFGMiner from the Git source

you can download it from

https://github.com/luke-jr/bfgminer/zipball/bfgminer

We made some changes to the way it clocks the FPGA chips and are seeing some increased performance and stability

Also many customers will receive tracking numbers over the course of today and tomorrow

if you dont receive a tracking number by Wed the 29th its likely your order will be in the next production run which is starting this week and will be shipping again next week.



hero member
Activity: 896
Merit: 1000
Buy this account on March-2019. New Owner here!!
no current FPGA mining hardware supports litecoin mining because there are no external memory on them.
legendary
Activity: 952
Merit: 1000
I read  somwhere that Mining for Lite coin needs massive amounts of RAM (scrypt) to be effective. Spartan Boards of These Kind doesnt have this (Ztex, modminer, bfl)....

At least on GPUs, you can't underclock your RAM to get any decent numbers for scrypt.
hero member
Activity: 784
Merit: 500
I read  somwhere that Mining for Lite coin needs massive amounts of RAM (scrypt) to be effective. Spartan Boards of These Kind doesnt have this (Ztex, modminer, bfl)....
sr. member
Activity: 349
Merit: 250
Have you identified other uses for the ModMiner quad?
Would it be possible to bring litecoin mining to the ModMiner?
What would be the payoff period for litecoin mining?
legendary
Activity: 1372
Merit: 1003
http://www.BTCFPGA.com
The ModMiner Quad is a highly efficient FPGA Based Bitcoin Mining Device.


 Have you identified other uses for the ModMiner quad?

I have actually had people buy these already for uses other than with Bitcoin mining, mostly for their own hobbyist/academic uses. Basically with this configuration you could change the firmware and make it do pretty much anything you wanted, anything that any other FPGA could do. It could certainly act as a open FPGA development platform for whatever, the sky's the limit. The ModMiner quad also has a resale value outside of the Bitcoin world for these purposes or just for the value of the four Spartan-6 XC6SLX150-2FGG484C FPGA Chips themselves as they do have a resell value.

One interesting thing I have been reading about is they are bringing OpenCL to FPGA in the near future which opens up a lot more possibilities.

As far as heating with it - that would not work very well, unlike GPU's FPGA's do not put off a lot of heat Tongue



Would it be possible to bring litecoin mining to the ModMiner?
hero member
Activity: 728
Merit: 500
In cryptography we trust
As far as heating with it - that would not work very well, unlike GPU's FPGA's do not put off a lot of heat Tongue

Depends on how many you have running... It can get pretty hot in my garage :-))

It's a big improvement compared to the GPU's tough, you're right about that.
hero member
Activity: 896
Merit: 1000
Buy this account on March-2019. New Owner here!!
http://www.BTCFPGA.com
The ModMiner Quad is a highly efficient FPGA Based Bitcoin Mining Device.


 Have you identified other uses for the ModMiner quad?

I have actually had people buy these already for uses other than with Bitcoin mining, mostly for their own hobbyist/academic uses. Basically with this configuration you could change the firmware and make it do pretty much anything you wanted, anything that any other FPGA could do. It could certainly act as a open FPGA development platform for whatever, the sky's the limit. The ModMiner quad also has a resale value outside of the Bitcoin world for these purposes or just for the value of the four Spartan-6 XC6SLX150-2FGG484C FPGA Chips themselves as they do have a resell value.

One interesting thing I have been reading about is they are bringing OpenCL to FPGA in the near future which opens up a lot more possibilities.

As far as heating with it - that would not work very well, unlike GPU's FPGA's do not put off a lot of heat Tongue

hero member
Activity: 728
Merit: 500
In cryptography we trust
   Aside from password cracking. Have you identified other uses for the ModMiner quad?

Heating?
full member
Activity: 784
Merit: 101
http://www.BTCFPGA.com
The ModMiner Quad is a highly efficient FPGA Based Bitcoin Mining Device.


Tom,

   thank you for the information you sent me recently in eMail. I appreciated your quick response (on a sunday),

   I have another question and this is the best place to ask it.

   Others have asked this but I hadn't seen a reply from you in those threads.

   Be it 2 months, 6 months or a year, eventually it will cost more in electricity than can be earned  (assuming $10USD value of BTC)

   Aside from password cracking. Have you identified other uses for the ModMiner quad?
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