In Zadig I do not have the option CP2102 USB to UART Bridge Controller, I have to go to options and list all where I find STM32 Virtual COM Port. I selected WinUSB (v6.1.7600.16385) and I am now able to Hash btc but i can no longer do scrypt, and I no longer see my miner coming up in device manager as a com item. Also I accidentally did a replace driver on my keyboard and can no longer use the damn thing, how can i reverse this. Thank you for your time

The latest Gridseed CP2102 usb mining machine hardware has been replaced STM32, admin of the mining machine may be the previous version.

If your unit has a STM32 Virtual COM Port instead of CP2102 USB to UART Bridge Controller you can try replacing that driver by following the same procedure, it might also work, though unfortunately we do not have a unit with the newer chip to test ourselves. If it does not work, just uninstall the driver and the device should install back the original driver and work again with the cpuminer.

We are mostly focused on Windows as it is not getting that much attention and a lot of miners that are not too technical are having issues under Windows that not many people are trying to help with. We can do Linux as well, but there are many more users that can help with Linux. As for Raspberry Pi or OSX and others, we could probably do these as well, but we do not have the hardware available to test on and we do not like to release things that we haven’t personally tested and confirmed working.

I did follow your procedure and replace the stm32 driver and I was able to mine sha256 but i could no longer mine scrypt as cpuminer could no longer see my gridseed device, and it did not have a comport anymore. In your setup did it remove the device from having a comport under windows? What were your settings for minerd to get it to see the device to do scrypt
Thank you for your time.

I have the red finned unit, and when I first plugged it into my pc(Win7/64bit) windows auto detected STM32 and assigned it a com port which i could change later. I did not see anything else come up to indicate there was a second com port. So I do not know how I am going to get it to dual mine under windows at the moment

Thank you for your time, I posted images of before and after on Bitcointalk forum link below. Before I use Zadig you will see STM Virtual port under com ports with a port number assigned, after I use Zadig, STM Virtual com port falls under USB Devices with no com port assigned and no way to assign one.
https://bitcointalk.org/index.php?topic=482352.new#new

I tried that as someone else did and both are detected now, however cpuminer is not finding any shares

Try with \\.\COM1 for the com port…

Many baby steps later I am at a wall, I have both programs seeing the miner, however with this setup CPUminer is not solving any hashes as I linked to a screengrab in my pevious post. I tried lowering clock freq, running just cpuminer stand alone still the same results detects miner, even has new work dispatched to miner but never solves a hash, meanwhile the sha256 side is moving right along.

Louie, our ASIC has a second COM port that we point the cpuminer for LTC at to dualmine. It is possible that in newer revisions they have implemented something else, however we do not currently have newer revision of the ASIC to test with…

Thin King, if you manage to run it through an emulator it will be so slow to be good for anything other than a proof that it can be made.

Okay real quick, RPi cannot run Windows (WINE is possible but even that is slow due to 512 MB of RAM which is split between the system and GPU and the fact that RPi CPU is ARM). The fact that the Gridseed 5-chip actually uses virtual COM ports is ideal. I’m borrowing a friend’s unit since my order was only placed a day ago, but USB port is plugged into a BFL ASIC miner and is being controlled by an unmodified (although specifically compiled) version of the latest cgminer. The other USB port is plugged into a Gridseed 5-chip device and is running in dual mining mode (with a modified cpuminer handling the scrypt mining and a modified cgminer handling the BTC).

So with those three processes running I’m able to use the dual-mining capabilities of the Gridseed 5-chip device and still use my older ASIC miner. The only real issue is that I’m having to depend on the web statistics of the multi-scrypt pool I use to tell me the speed regarding scrypt mining. I run a home server 24/7 that I could have plugged this into but since the RPi doesn’t really ever need to be rebooted or touched for that matter, plus uses that power, I wanted to take advantage of having one in use. Also people might be discouraged from using RPi’s USB ports due to general misinformation regarding their ability to handle external devices. First, it is mostly a power issue (and all of the devices mentioned use external power) and second, this can be an issue for high rates of speeds (i.e. streaming an HD movie off of a USB stick or something similar). Very little bandwidth is being used on the Internet-side of thing and there isn’t a real risk of losing data between our miners and RPi.

Once I have my own device (i.e. something that I can break and not get in trouble for), I will see how far I can I can push the hardware, as well as post a complete article/tutorial (either on BCT or as a guest on this blog). I have kept a running distro updated (although not publicly released yet) called “MinePeon” that is Debian-based. I don’t plan on releasing it yet, however I would consider a limited Gridseed version that supported 1 or more units via USB hubs (I would want to research and figure out how to get scrypt speed to be displayed as well as add a web frontend for scrypt, SHA-256 and dual mining).

Is it possible to mine in dual mode with more than one unit at a time? Would you just have to add the other COM ports being used?

Okay here goes what I have found. If you run more then one gridseed in Dual mode the second instance is sharing the same gridseed on scrypt. If anyone can prove me wrong or confirm and or has a fix let me know. I spent 5 hrs last night with watching the KHS in scrypt if you run one its fine if you run two its mining off the same gridseed. Thanks all

Hi, I’m sorry for being a total noob but I recently got 2 Gridseed blades and have no idea how to set it up. I also have a raspberri pi 3 and right now don’t even know what types of coins I’m able to mine with it. I’ve tried multiple tutorials on Youtube but they all are outdated from 2013-2014 and cgminer which is suggested has had so many updates since then.
Is it still possible to mine using these devices? If yes, if anyone is willing or able to help me set it up I’m willing to join your pool or even pay for your time (within a reasonable price of course) :).

Thanks and appreciate the help.