Bitcoin Forum

Update 2014-02-12: All units have been sold!

Hey everyone,

I'm selling DualMiner USB ASIC SHA256/Scrypt (Bitcoin/Litecoin, Dogecoin, etc) miners!
Product info page: http://www.dualminer.com/DualMiner-USB_p_16.html

These are in stock and shipping within 1 business day of cleared payment!

Pictures for proof (I can take more pictures if you want additional proof):
https://i.imgur.com/Lu2i5LR.jpg

https://i.imgur.com/DYMcl5X.jpg

Shipping is from Rhode Island, US.
USPS First-Class Package Service will be used for both domestic and international shipments.  Estimated delivery time is 2-5 business days for domestic shipments.

Pricing (all prices include shipping)
Bitcoin payments will be handled via Coinbase which will calculate the BTC amount based on current exchange rate at time of payment.
Dollars ($) refer to US Dollars.  Pricing is tied to USD because the manufacturer/distributor of these products ties their pricing to USD.

** NOTE: An additional $3 fee for signature delivery confirmation is required for all PayPal orders >=$250.  This is required by PayPal's seller protection policies. ***

Shipping to US:
$87/unit BTC, $90/unit PayPal (any quantity)

Shipping to Canada:
$90/unit BTC, $94/unit PayPal for one (1) unit
$89/unit BTC, $93/unit PayPal for two (2) units
$87/unit BTC, $91/unit PayPal for three or more (3+) units

Shipping anywhere else:
NOTE if actual shipping cost is unexpectedly high I will require additional payment. (these prices should be pretty accurate though)
$93/unit BTC, $98/unit PayPal for one (1) unit
$90/unit BTC, $94/unit PayPal for two (2) or three (3) units
$88/unit BTC, $92/unit PayPal for four (4) or five (5) units
$87/unit BTC, $91/unit PayPal for six or more (6+) units

** NOTE: An additional $3 fee for signature delivery confirmation is required for all PayPal orders >=$250.  This is required by PayPal's seller protection policies. ***

How to order
Step 1: Email (don't PM) the following information to matt@doonstack.com with the subject "DualMiner USB Bitcointalk Order":

• Your Bitcointalk username
• Quantity desired
• Color(s) desired (subject to availability- choices are black, gold, sapphire)
• Full shipping address including your name and telephone number for international orders. VERY IMPORTANT for PayPal only: I will only ship to confirmed PayPal addresses
• Special requests: different shipping method (UPS, FedEx, USPS Express; will be at your expense), anything else you want me to know.
• Payment Method - Coinbase (BTC) or PayPal
• You must include your PayPal email address if you want to pay via PayPal.  I will send the invoice to the reply-to/from address of your message if you don't specify your PayPal address.

Step 2: I will send you a Coinbase or PayPal invoice for your order

Step 3: Please pay the invoice!

Step 4: I will ship your miners within 1 business day of receiving cleared payment

Step 5: Wait for them to arrive, then enjoy your new miners!

Please email matt@doonstack.com or PM any questions.

Thank you for reading!

Very interested! Just sent you an email Cheers!

Thank you for your order!
Your miners have just been shipped and you should have received an email with the tracking info.

I will not be online from now until tomorrow (Sunday 2/9) night EST.  This shouldn't matter because the post office is closed and won't be open again until Monday anyway.  All orders paid by ~8AM Monday morning EST will ship on Monday!

Fast ordered sat. have a tracking # already will be here monday !thank's

Sent Email. ;D

also email send :)

All orders so far have been shipped and everyone should have received an email with their tracking info.
Please contact me ASAP if you paid and did not receive a tracking number!

Also note- starting now, all PayPal orders with a value of $250+ will require an additional $3 fee to cover signature confirmation which is required for PayPal seller protection.  Thanks for understanding.

I work full time so my responses during normal business hours will be somewhat limited, however I will ship all paid orders within 1 business day of cleared payment.

Thanks!

Thanks for ultra fast order processing!

email sent, invoice received, paid  ;D

how many litecoin can mine with this?

The miner has 2 modes.  It can mine Litecoin at 70 KH/s on Litecoin-only mode, and can mine Litecoin at 40 KH/s and Bitcoin at 500 MH/s on Bitcoin + Litecoin mode.
You can use a mining calculator to determine how many coins this will generate for you.  Here's one example: http://www.litecoinminingcalculator.com/

How long for shipment to Asia?

I agree! My order was confirmed sent and i received tracking info the same day I paid. Will post pictures when it arrives here :)


I am in Asia too. In my experience USPS Express International takes about 5-6 days but you can pay a little extra for FEDEX or DHL and have it within 3 days.

same here, I was actually the first to pull the trigger on mittys deal, mine should be delivered tomorrow.

great guy to work with!

The shipping for the prices listed above is USPS First-Class International Package Service which can take anywhere from a week up to a month (rare, but it has been reported) for international destinations.  It is a cheap service hence why I can offer such low prices for international shipments.

Priority Mail International estimates delivery in 6-10 business days for most international destinations but can be delayed due to customs.  This is a somewhat expensive service and is probably not worth it for small orders (<4-5 miners).  I can do this at an additional cost; simply request it when you email me.

Priority Mail Express International is the fastest USPS service (other than Global Express Guarantee which is a partnership between USPS and FedEx) and has an estimated delivery time of 3-5 business days.  This is a very expensive service and is probably not worth it for orders of less than 6 miners.

You can get shipping price estimates for Priority and Priority Express here: http://postcalc.usps.com/
The cost of USPS International services depends mostly on weight; each individual miner weighs 1 oz and packaging material for up to 7 miners adds about 1 oz. (actually a little less but you have to round up)

I can also ship using UPS or FedEx however please be warned that these services will charge you extra customs brokerage/duty fees upon delivery.

If you want your miners as fast as possible I recommend requesting Priority Mail Express International as long as you are willing to pay the extra expense.  My margins are very small on this group buy so I can't absorb the cost of expedited shipping.

Thank you, I hope you enjoy your miners!


Everyone who paid at this point should have received a tracking number.  Please contact me ASAP if you have not received tracking info!  Orders that were made after post office hours today will ship tomorrow morning.

Also please note that it may take up to 24 hours for a tracking number to work after initially receiving it; this is not delaying your shipment in any way!

my dualminers got in today! super fast shipping.

Thanks Mitty!

I suggest don't do First class or priority to International. You will get a few chargebacks as it doesn't include tracking. Not worth the headache in my opinion. There are always some buyers who just want to do this.
Be careful, unless you now something i don't know!

yay just made payment and now i can't wait to receive them. mitty has been kind enough to accommodate my requests all throughout the deal. Waiting on my tracking number now.

I have three out for delivery!  I will update once postman gets here this afternoon. hope a couple fall through!

I appreciate the heads up.  I've had success with Priority Mail Express (and regular Priority Mail) International but have never tried First Class International before this group buy.  I did some research and it seems the consensus is that FC International is slow but usually reliable so I figured I'd take the risk and see if it works out.  USPS seems to have also improved international tracking in the past few years (at least added international delivery confirmation) to some countries and sometimes the packages can be tracked through the respective foreign postal service websites using the same tracking number.

Yes it's somewhat of a risk but I shipped the majority of the units I sold both domestically and using Priority Express International (mostly due to one huge order for more than half of my units, haha) so I'm prepared to take the hit if any of the smaller international shipments get lost and use this as a lesson learned if I lose a ton of money. :p
I would probably require insurance on all international shipments if this ends up being a failure and I decide to try again in the future.

But so far all of the packages I've checked seem to be progressing nicely to the USPS international shipping center in NY.

Received one of each color.  All are hashing in LTC mode.  Either on LTC or FTC pools.

can someone confirm if the usb devices register as 1 or 2 devices? as i bought a bunch and need to buy a couple coms as controllers.

i think each one gets recognized as 2 devices

so i wouldnt be able to run 80 pieces on a single desktop yea?

No idea

sorry  :-[

I hope them to arrive tomorrow on friday, always hate it when it turns out to be monday :p

Will update when I get my big box of Dualminers :]

yea that really sucks doesn't it, now i'm having trouble trying to get as many 49 port hubs asap.

Try http://store.jonesgear.com/
they have the 49 port hubs in stock
I have used them for several months and they have always been good to me.  Website is a little cheaper than their Amazon store.

Got my USB today. Thanks for the fast shipping / order processing, Mitty.  ;D

Seems to be unable to mine just in LTC mode, mines both just fine though. I'll tinker with it over the weekend.

No problem, glad it got there quickly & safely. :)
Did you make sure you set the tiny switch on the unit itself to "L" mode for Litecoin only?
Let me know if you still can't get it working and I'll contact DualMiner for RMA info right away.

Yeah, I made sure it was set to L.

Everything installed fine, pool info is correct, all the basic stuff I checked.

I can set it to mine both, switch it to B, and it'll work no problem. Set it to mine both and leave the BTC pool info blank and it'll mine just LTC fine. I can even set it to mine both, leave the switch on L, and it'll mine only LTC but KH/s is exactly as if it were mining both.

Set it to LTC only and it won't mine at all. I haven't found a way to get it to mine only LTC at the expected ~70kh/s.

I'm sorry you're experiencing issues with your miner. :/
I just emailed my contact at DualMiner and will get back to you when I hear back from him regarding warranty claims.  Hopefully I hear word back by tomorrow.

received my stuff yesterday...thanks for the fast shipping, you are a really reliable seller and this was a fantastic group buy.

Here are some pics of my setup:

http://www.batpic.com/images/2014/02/14/Photo_14-2-14_7_56_48_amujlK.jpg

http://www.batpic.com/images/2014/02/14/Photo_14-2-14_7_56_29_amEnQTM.jpg

http://www.batpic.com/images/2014/02/14/Photo_14-2-14_7_56_25_amcCYxi.jpg

http://www.batpic.com/images/2014/02/14/Photo_14-2-14_7_56_10_amkbH3.jpg


I got in late last night so i only managed to test one miner running in litecoin mode. It clocked a stable 68-90 kh/s
That was on my laptop running windows 7 x64

I tried to install in on my desktop Windows XP x84 but it crashes every time windows goes to install the driver. I installed the VCP from FDTI website like the www.dualminer.com guide said. I get the following error message: "driver download timed out"

Any ideas, Mitty? I will try again tonight and post some screenshots. Is there a place to download the drivers manually? that would be a lot easier...

Will let you know what speed i get running 30 of them on Dipo Electronic 19 port hubs. These hubs have a lot of juice in them they can deliver about 1 amp per port easily so that should help.

ah i'm in aus so they don't ship to me, its alright though, i managed to get in contact with asicminer and bought a couple hubs with expedited shipping.

I figured it out! I don't think the issues are with the USB, to be honest.

I went to the install directory, changed and ran the LTC_ONLY.bat file. Raised the setting "--dualminer-pll 500" to 900 and it's now hashing at ~70KH/s.

It will not work if I use the GUI that installed.

Awesome, glad it's working!
DualMiner just got back to me and said it doesn't sound like a hardware problem, haha.

I experienced a similar issue when I tested a few of the units and had just assumed it was something wrong with my computer;
I first tried running a few units on my Windows 7 x64 desktop PC with no success- drivers seemed to install but the units would simply not mine.  So I then tried on my Windows 8 x64 laptop and they worked fine and assumed the issue must be with my desktop PC.

However according to the DualMiner site you don't need to install the VCP driver unless you're on Windows XP- Windows 7 and 8 should install the devices automatically.

Can you post some screenshots of the errors you're getting?

got mine in the mail today!


thanks Mitty

Ah didn't realize that.  Glad you got some hubs coming.  Wish I had got more than 3 of these from Mitty.  After setting them up they mine great so far.

I sorted it out in the end. It was a problem with the operating system. Turns out the computer was using Windows Vista (maybe there is no support for Windows Vista????? on the dualminer website it only talks about Windows XP, 7, 8 and 8.1).

Anyway i upgraded to Windows 7 and then tried again and they installed the drivers automatically, no problem.I have 30 hashing away now at average 1900 - 2300 kh/s. Appear pretty stable for the time being. Any info about firmware upgrades for the single chip miners? There is suppose to be a firmware upgrade for the 5 chip miner that improves the speed from 300 kh/s - 500 kh/s.

Also do you plan to have any more stock soon?

wow demand for this seems to be pretty decent.

I don't have any info on new firmware but will post anything if I hear it.

And I am considering ordering another batch because there seems to be a pretty big demand for these. ;)
But nothing official yet.

Look forward to you ordering more of these. Cheers....

Also looking forward to you ordering more.

Ha alright, I'll order another batch.  Waiting to hear back from DM but hopefully I'll have them in 1-2 weeks. (just a rough estimate; I actually hope it's sooner)

i might have to order more, depending on the response for people. i dont think it will be as large an order as the previous one. but my orders will be in multiples of 40.  ;D

I will order more if you get another batch.

I would like to purchase more as well.

I'm currently having some issues getting in touch with DualMiner and their website also seems to show limited/out of stock for the DualMiner USBs. :/
Unfortunately it looks like things are going to be a bit delayed- as for now I don't have an ETA but will post here as soon as I hear back.

I apologize for the delays and hope everyone who ordered in the first batch who has received their miners are enjoying them!  I know there are still international orders that have not been delivered but it looks like the first few orders to Europe have been delivered today so everyone should be receiving their miners soon.

Unfortunatly I'm one of them that did not get delivered yet, I hate USPS, they are slow as hell :P

It looks like the dualminer site is showing them in stock again. I've been having slow contact with them aswell, and with slow, I mean really slow.

Yeah, they are very slow with international shipments except for Priority Mail Express International which is decently quick.

DualMiner will have limited stock available next week and higher volumes available in March. I'll try to get my hands on some next week; otherwise it may not be until March :/

I am not sure USPS should be blamed for slowness, I've got my packet within 7 days from shipment date(to Slovakia, EU).

yeah, customs seem to delay it.. i finally got a notice to pick it up at customs..

yo mitty as expected my order got held at customs, took them 3 days to send me a notice. anyway i paid my gst and now i'm hoping it'll get in today. will keep you updated.

My order is standing still for 3 days at the customs already :-\

4 DualMiner Sticks successfully arrived in germany

had to pay 3,5% customs ( they declared it as data carrier, non-writeable )
and then 19% taxes

each hashing with avg 67,8 khash

Thank you mitty  :)

i built a rack to house the USB sticks. pic is over here http://releasethecrypto.com/dualminer-hw.html

got the shipment today, in total 4 days held at customs and another day delay cause i missed the delivery.

https://i.imgur.com/VEIOquql.jpg

finally got them all up and running, everything looks great, thanks mitty!

https://i.imgur.com/muN2DIxl.jpg

Still waiting at the customs  :'(

Looks like it won't be happening until March at this point. :(

Keep us posted!

Right now I'm making arrangements to order a batch of the 5-chip miners as there seems to be a larger demand for those and I felt like I had to do something while waiting on DualMiner, but unfortunately I simply don't have the capital to also buy a batch of DualMiner USBs.  It's also an issue of my time between selling stuff here, on eBay, and working a full time job. ;)
But next time I'm going to have a website set up to handle orders which should hopefully result in faster order processing and maybe better (i.e., calculated based on actual cost) shipping rates for everyone.