Datasheet (24-Bit Analog-to-Digital Converter for Bridge Sensors): http://www.ti.com/lit/ds/symlink/ads1231.pdf
Original Arduino-Library as starting point: http://forum.arduino.cc/index.php?action=dlattach;topic=131086.0;attach=67564 Thread on Arduino-Forum: http://forum.arduino.cc/index.php?topic=131086.0
Ongoing thread @ Community-Particle: https://community.particle.io/t/library-for-ads-1231-bee-hive-weigh-scale/21719
alternative Library for Arduino: https://github.com/rfjakob/barwin-arduino/tree/master/lib/ads1231