First you read the power management flag using :
cat /sys/module/8192cu/parameters/rtw_power_mgnt

This will report a value of “1”.

To set it to zero you can use :
sudo nano /etc/modprobe.d/8192cu.conf

and add the following line :
options 8192cu rtw_power_mgnt=0 rtw_enusbss=0

To quit from nano use [CTRL-X], [Y] then [ENTER].

You are now ready to reboot using :


cat /sys/module/8192cu/parameters/rtw_power_mgnt

sudo apt-get update
sudo apt-get install tightvncserver

sudo raspi-config
enable ssh


cd dev/piface-python-websocket-server/

sudo apt-get install tightvncserver
vncserver :1 -geometry 1280x800 -depth 16 -pixelformat rgb565:

tightvncserver

adafruit usb-com device
Red -> Pin 2 (+5V)
Black -> Pin 6 (GND)
White -> Pin 8 (TXD)
Green -> Pin 10 (RXD)