Driver for the LCD modules (actually the controller board) available from the 'SURE electronics' shop (). These devices are PIC based controlled, using a serial communication protocol with the host. The actual connection to host is done through USB through a serial-to-USB converter (CP2102 USB to UART Bridge) integrated on the board. Port = PORT Port the device is connected to. By default first USB serial port /dev/ttyUSB0 is used. Edition = EDITION Edition level of the device (can be 1, 2 or 3). The default is 2. Size = ¶meters.size; Set the display size in characters. This is required for edition 1 devices. For edition 2 & 3 devices this value, if defined, overrides the size read directly from the device. Contrast = CONTRAST Select the display's contrast, 480 is the default. Permissible values are in the range of 0-1000. Brightness = BRIGHTNESS Select the display's brightness, 480 is the default. Permissible values are in the range of 0-1000. OffBrightness = OFFBRIGHTNESS Select the display's when the display is normally switched off in case LCDd is inactive, 100 is the default. Permissible values are in the range of 0-1000.