However, problem is when I use the drone Api examply vehicle_state.py:Īpi start /home/pi/dronekit-python/examples/vehicle_state/vehicle_state.py Everything is setup, and able to arm and disarm. One way to get there is Interactive Knitting / Options / Knitting machine and then click Setup.I am trying to connect Pixhawk with Raspberry Pi and using DroneApi for it. If your cable is not in that list, then it will be necessary to enter the new port number manually in DesignaKnit’s knitting machine setup. If your cable is in the following list, you should then be able to use Find Link to see if DesignaKnit 8 can detect the cable’s port number and to set the port in Knitting Machine Setup to that number. Click OK, OK again, and close down Device Manager.Ĩ. If some other device stops working you will need to come back to this point and choose a different port number.
#Prolific usb to serial comm port not in device manager windows
Windows can mark a port as being in use when it had been used some time in the past but is no longer in use, so it is often ok to ignore the warning and select a port that Windows says is in use. Select a different port number (for DesignaKnit 7 this must be between 1 and 9, but can be any number up to 99 for DesignaKnit 8). At the top of the dialogue there is a drop-down list of possible com ports, with an indication of whether each port number is already in use. Right click on this device and select Properties / “Settings” or “Port Settings”, and then Advanced.ħ. If you are using a USB to serial converter, look for a port called “Prolific USB serial port” or similar.Ħ. If you are using a USB cable link, look for a port called “USB serial port” or similar. Each new line will be something like "Communications Port (COM1)”ĥ. This will produce additional lines in the list of devices, one for each port that the computer has. In the list of devices, double click on "Ports (COM & LPT)".Ĥ. Make sure View / Devices by type is selected.ģ. Under other versions of Windows, open a "Computer" window and select "Control Panel" (it may also be necessary to select "Performance and Maintenance" or “System and Security”) then “System”, “Hardware” and finally “Device Manager”.Ģ. Type Device Manager into the search box and then select Device Manager from the list that appears. In the main Settings window, there is a search box that says “Find a setting”. We’re not sure why it works perhaps the problem is caused by another device trying to use the same port number.ġ.
It occasionally happens that a problem using a cable link can be fixed by getting Windows to use a different port number for the cable link or USB converter. This is for USB cable links, and for serial cable links that are being used with a USB to serial converter.