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Download cgminer 3.7.2 for Windows Scrypt mining on Gridseed 5-chip GC3355 ASICs

6, Mar 2014

cgminer-3-7-2-gridseed-windows

We now have a version of cgminer 3.7.2 available for mining Scrypt (LTC) only on the 5-chip Gridseed GC3355 ASIC devices with properly displayed local hashrate as well as HW error rate and the full cgminer 3.7.2 functionality (thanks to a user called dtbartle on GitHub). We have compiled a windows version of that miner that you can download and install it to finally have fully functional cgminer on your Gridseed Scrypt ASIC (source code available here). Have in mind that you need to install a WinUSB driver on top of the standard installed USB to COM driver for the miner in order for cgminer to detect and run on your ASIC in LTC only mode with low power consumption of about 8W.

zadig-gridseed-dualminer-usb-config

– Download and run the latest version of Zadig
– From the Zadig interface select Options and choose List All Devices
– From the Dropdown list of devices select CP2102 USB to UART Bridge Controller and click on Replace Driver with the WinUSB driver selected
– If you have multiple 5-chip GC3355 DualMiner USB devices connected you may need to repeat the procedure for all of them
– Download, edit and run LTC_ONLY.bat file from the modified cgminer 3.7.2 for Gridseed ASICs to start mining for LTC

It seems that there are some ASIC devices that may be using different virtual USB to COM drivers other than the CP2102 that our unit has (for example ST32 Virtual COM Port), unfortunately we don’t have any of those to test with. You can however try to make things work by replacing the other driver with WinUSB, just select the right name from the dropdown box (do not try to rename drivers, it is pointless) and Replace it with WinUSB (you may need to unplug and plug the USB cable to the miner after that). If after installing the WinUSB driver over the virtual USB to COM driver the ASIC does not work with cgminer, you just need to uninstall the driver from the Device Manager and unplug/plug the USB cable to the device for it to install the original USB to COM driver and it should be functioning again with cpuminer (note that this way you may have it running on a new COM port).

Do note that if running single Gridseed ASIC device you can have it connected to the system and use the hotplug 0 option, if you have more than a single miner you may have to set commandline option hotplug to 5 or 10 and then run cgminer and start plugging the USB cables of the miners (USB hubs with power on/off buttons work great for that).

– You can download cgminer 3.7.2 for Scrypt mining on Gridseed 5-chip GC3355 ASICs on Windows OS here…

First Dual Scrypt and SHA-256 ASICs Getting Released

1, Feb 2014

gridseed-chip-intro

The Chinese company called Gridseed is the first one that has announced an ASIC chip capable of mining both BTC and LTC at the same time or any other SHA-256 and Scrypt crypto currency. Gridseed’s chips are 55nm ASICs with 3 different operating modes: mine only Bitcoins, mine only Litecoins or mine both BTC and LTC at the same time. The Bitcoin and Litecoin mining at the same time should be able to provide 1.6GH/s for Bitcoin and 60 KH/s for Litecoin mining speed per chip with a 4-5W power consumption as per manufacturer’s claim. So far we haven’t seen any device based on these chips, but apparently Gridseed are already shipping chips and the first devices should start hitting the market after the Chinese New Year holidays are over and info about the first devices is already becoming available…

dualminer-usb-asic

The DualMiner USB is one of the first ASIC based USB miner for both SHA-256 and Scrypt that is based on a single Gridchip’s GC3355 processor chip. It can be setup to mine Litecoin only, or Bitcoin and Litecoin simultaneously. The hash performance is apparently bounded by USB 2.0 specification of maximum 2.5W power consumption for a device and thus instead of of 1.6GH/s Bitcoin mining speed you get only 500 MH/s and instead of 60 KH/s Litecoin speed only 40 KH/s in dual mining mode for BTC and LTC. If the operates only in LTC mining mode it will operate at 70KH/s or a little over the default chip specs thanks to the lower power consumption for LTC scrypt mining only. The price of a single DualMiner USB ASIC is $98 USD at the moment, however the specs of the device don’t make it that interesting for a single unit.

lightningasic-gridship-asic

A company called Lightningasic has announced a Bitcoin and Litecoin ASIC mining system based on multiple Gridchip GC3355 processor chips capable of mining BTC and LTC at the same time. Unlike the single chip USB devices these systems use multiple chips and provide higher hashrate – 300KH/s for scrypt plus 10GH/s for SHA256 working together with 60W power consumption. Only mining scrypt gets you 8W and for only SHA256 the power consumption is 52W. This looks more promising in terms of hashrate available, but for these devices to be really interesting we are going to need more chips together on a board and these are probably not going to be late to follow.

FutureBit Apollo II is More than Just a Bitcoin ASIC Miner for Home Users

27, Nov 2023

The new FutureBit Apollo II has been officially announced and it is going to be available in three different versions with shipping starting in Q1 next year (2024) with preorders expected to be available from December 8th. We are not sure how to talk about this device as it is more than just a Bitcoin miner designed and made in the USA and targeted for home users… although the Apollo II Standard ($799 USD) is essentially a cool looking USB-based Bitcoin ASIC miner capable of delivering up to 10 TH/s hashrate with about 400 Watts of power usage and that device can be plugged in to an older Apollo node or a newer Apollo II Full Node or a computer or a RPi thus adding new or expanding existing hashing power. The new Apollo II Full Node ($1099 USD) as the name implies includes a Full Bitcoin Node and the device itself is a Miner + Full Node + Linux Desktop System all in one with the mining part essentially the same as the standalone device. With the Full Node you also get a built-in modern ARM based controller with 4GB of RAM and up to a 2TB of SSD storage that has a pre-installed dedicated Apollo OS 1.0, that allows for built in zero config solo mining directly to your node. And the third version is the FutureBit Apollo II Founders Edition ($1999 USD) that has all of the Full Node features, but with additional extras such as cooler looking orange case with transparent top, and you would be able to get it shipped first with a limited number of units available.

We remember first hearing about FutureBit back in 2016 on Bitcointalk where jstefanop announced that he is working on a USB-based Scrypt ASIC miner and soon after that we got our hands on the FutureBit MoonLander USB Scrypt ASIC Miner to test it. We really liked the design and how the device worked back then later on came the improved FutureBit Moonlander 2, after that the Apollo LTC miner and then the upgrade kit to bring it up to a Full Node and the Apollo BTC miner and Full Node, and now comes the next evolution with improved hashrate and power efficiency as well as features. The miners from FutureBit have always been for home users and not for large mining farms and are designed around the idea of quality and reliability, silent operation at home and useful additional features. So do not expect these to be rivalling the latest generation of ASIC miners designed for big Bitcoin mining farms, although efficiency wise the Apollo II does compare very well efficiency wise to the current generation of Bitcoin mining ASICs on the market.

– Check out the official FutureBit website for more details about the Apollo II…


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