I followed the installation instructions for the jrk 21v3 board on a Windows 7 Dell Precision M4400 laptop. After installation of the drivers, and connection of the USB port, I can see the two comports in the Device Manager and an entry named âPololu Jrk 21v3 Motor Controllerâ under âPololu USB Devicesâ that shows a yellow warning triangle. When I access the Jrk Configuration utility, the âConnected to:â dropdown box shows âNot Connectedâ and the list is empty.
Iâve uninstalled and reinstalled the drivers, but I get the same behavior. The serial ports claim to be installed and working correctly.
When I show details on the driver, and ask for DevNode properties, it gives me the code â01802400â with one of the error codes being âDN_HAS_PROBLEMâ.
What am I missing? How do I get the Jrk Configuration Utility to recognize the device?
Iâm sorry you are having trouble with the jrk. Have you tried unplugging the jrk from USB and plugging it back in? Could you please click on the âPololu Jrk 21v3 Motor Controllerâ entry under âPololu USB Devicesâ and tell me what it says in the âDevice Statusâ box? Iâm not sure where you got those error codes; did they come from âDevNode statusâ listing in the âDetailsâ tab?
Iâve tried most of the usual stuff⌠Unplugging and replugging⌠Reinstalling the driver⌠Nothing helped.
Today I tried installation on a different laptop (this one Windows XP), and it worked. The jrk configuration utility can see the device. I can try to repeat the experiment on the other laptop that failed later today. One thing I hadnât tried on that laptop was actually cycling power.
As you guessed, the error code I listed were from the âDevNode Statusâ item in the Details tab of the âPololu Jrk 21v3 Motor Controllerâ properties displayed from the Device Manager. For my working laptop, these are the codes I see:
That confirms my suspicion that the âDN_HAS_PROBLEMâ code I saw on the other laptop was a symptom of the problem. Iâm sorry that I cannot give you a complete list of the error codes until I get access to the other laptop (someone else has it right now). I had earlier reported the bit-encoded error code (0x01802400). Can you decipher all of the error strings from that error code? I remember there were four strings, and there are four bits in that error code, so I think there might be a one-to-one mapping.
Iâm glad you were able to get it working on another laptop. Please try power cycling the problematic laptop and let me know if that fixes the problem. Also please try other USB ports. If it still doesnât work, let me know whatâs in the âDevice Statusâ box.
Those bits are defined in Microsoftâs cfg.h. It looks like someone posted their version of it here:
Hello fellow pololu enthusiasts!
Iâm also having similar problems as ejubenville with jrk12V12 and JRK configuration utility. Windows7 home professional 64bit detects JRKs under âdevices and printersâ, but JRK utility does not see JRK. âConnected to:â stays âNot Connectedâ. I also tried with laptop running windowsXP and everything works as expected in JRK utility. Problem ocurred in W7 computer after changing mobo (to Asrock Z77 Pro 3) and doing fresh W7 install. I have tried so far:
plugged and unplugged JRK in different USB ports
installed and uninstalled earlier and current JRK configuration utility
uninstalled basic intel drivers such as usb3, audio, ethernet etc and installed again the newest versions
uninstalled microsoft net framework and installed again
A print screen (sorry for finnish language) shows there is a question mark in device manager in âPololu Jrk 12v12 motor controllerâ, but Windows states that device is working correct. When double clicking question marked motor controller, Windows states âthis device does not have installed driversâ. Is this normal? Any idea how the problem could be solved?
It looks like the drivers for the jrk did not install properly. Can you try manually installing the drivers by going to your Device Manager, right-click on âPololu Jrk 12v12 Motor Controllerâ, select âUpdate Driver SoftwareâŚâ, and then have Windows search for the drivers for the jrk in C:\Program Files (x86)\Pololu\Jrk\drivers?
After updating the drivers, are you able to select your jrk device in the Configuration Utility? If not, can you double-click on âPololu Jrk 12v12 Motor Controllerâ in your Device Manager, go to the Details tab, and select âHardware Idsâ from the drop-down menu and post a screenshot of it here?
Hello Amanda,
thank you very much for help, I installed drivers manually as you instructed and now JRKs are detected in configuration drop down box and everything seems to work! What a relief
