is there a way to use your Wii/Wii U sensor bar on your PC (Not usb one's the offcial one't that came in your wii/wiiu)
Yes, but it requires additional voltage.
Or you can just keep the sensor bar connected to the Wii while you're using the sensor bar with a PC. It works! (But if you're using a Wii U, you should go into Wii mode while you're doing this, otherwise the sensor bar will turn off when the Wii U thinks it isn't being used)