Installing CH340 Drivers for UNO clones

If you are using an Arduino UNO clone that uses the CH340 USB interface chip, your Windows or Mac needs to have the proper drivers installed to recognize and communicate with the chip.  Rather than repeat this material, I refer you to Sparkfun's instructions.

https://learn.sparkfun.com/tutorials/how-to-install-ch340-drivers/all#windows-710