There are two Arduio libraries, one for the I2C interface BV4618_I and the other for the serial interface BV4618_S. For an explanation of both see the user guide, the link of which can be found at www.doc.byvac.com under the product description.

17/01/2011
Updates now uses BSerial - sse userguide in ASI

June 2011
Fixed problem in bv4618_Im version incorrectly returned 0.0

June 2012
Updated for Arduino version 1.01
*)bv4618_I is the library filr for I2C and should go in the Arduino libraries folder
*)bv4618_I_no_keypad is a simple sketch that will work with a 16x2 display
*)bv4618_I_keypad This is an example with a keypad and has two option. The first oprion is remed out with // this an extra wire from the INT of the BV4618 to D9 of the Arduino. The second default option does not need an extra wire.
*)bv4618_S_example is the serial interface example. If this is used then BSerial needs to go into the library as well
*)ASI_library.pdf contains additional information about the BSerial library