gridseed-dualmining-on-windows-success

The 5-chip Gridseed GC3355-based ASIC devices that support Dual Mining for Bitcoin and Litecoin are not that easy to be used in the Dual Mode, because you need to have two different software miners running at the same time. There is a bit of specifics in what and how you need to do in order to mine both BTC and LTC at the same time and after a bit of tinkering we have managed to finally make things work as they should under Windows. You need to download a special modified version of cpuminer for Scrypt (LTC) mining and a modified version of cgminer for SHA-256 (BTC) mining. We have compiled the two software miners and you will find the download links below. You will also need the Zadig software in order to replace the virtual USB to COM driver with WinUSB driver for the cgminer to detect and work with the BTC mining side of the ASICs.

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 the BTC.bat file from the modified cgminer 3.8.5 for the Gridseed ASICs to start the miner working on BTC
– Download, edit and run LTC_ONLY.bat file from the modified cpuminer for Gridseed ASICs to start mining for LTC (check what your COM port is and edit it). You need to add the parameter “dual” (without the quotes and two dashes in front) to the command line in order for the Dual mode mining to start working

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).

This is it, you should have the miner running both SHA-256 (BTC) and Scrypt (LTC) mining withe the two software miners and the total power consumption should be about 60W. Note that you may need to lower the operating frequencies a bit for when mining the Dual BTC/LTC mode as the chips get hotter. If you want to mine only BTC you can stick only with running the modified cgminer, for LTC only you need the modified cpuminer without the dual option in the command line. The most attractive aspect of the Gridseed 5-chip GC3355 ASIC however remains their very low power consumption for Scrypt mining only mode, so think again if you really wan to run them in the Dual Mining more or for BTC only and not in LTC only mining mode instead.

ltcrabbit-new-alternative-cryptos-added

We liked the LTC Rabbit Scrypt mining pool as soon as we have tried it for the first time a few weeks ago when DOGE was in its peak in terms of higher profitability compared to LTC. The pool has been running stable and reliable and had a nice altcoin bonus on top of the earnings if directly mining for LTC, so a perfect choice for a backup pool that will still ensure higher profitability than directly mining for Litecoins. However lately there haven’t been any extra altcoin bonus been given by the pool and it was mining LTC most of the time anyway. The reason for that was that DOGE was not so profitable to mine anymore and the other alternative cryptos such as WDC or MEC did not perform any better than directly mining for LTC. It seems that the pool has added a few more newer and supposedly more profitable alternative cryptos including the lately very popular AUR crypto, so that it can start giving away extra altcoin bonuses again. We still have the pool as our backup mining pool and our primary one for the moment remains ScryptGuild, so check that one as well if you still haven’t.

For more information about the LTC Rabbit scrypt mining pool and to check it out…

cgminer-3-8-5-gridseed-windows-btc

In our efforts to make the Gridseed 5-chip GC3355-based ASIC devices to work in Dual Mode for mining Bitcoin and Litecoin at the same time under Windows we have compiled the special modified version of cgminer 3.8.5 that is designed to work with the Gridseed miners. You need to use this special version for mining BTC or to use the ASIC in Dual Mode where this software will be used for the Bitcoin mining part and the modified cpuminer will be used for LTC mining. Note that in order for this cgminer to detect your ASIC device you need to install a WinUSB driver over the virtual COM to USB driver, but a detailed guide will follow, so stay tuned. Meanwhile you can download cgminer 3.8.5 for BTC mining on Gridseed 5-chip GC3355 ASICs from the link below in order to try it out.

You can download cgminer 3.8.5 for BTC mining on Gridseed 5-chip GC3355 ASICs on Windows OS here…

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