x Scale - dicarlolab/mkturk GitHub Wiki
btscale github (appears to be for acaia lunar)
decent scale (ships September 30, 2018)
hx711
hx711 arduino library on GitHub
SparkFun Load Cell Amplifier hx711
SparkFun Tutorial on Load Cells
hx711 amplifier hookup guide
Arduino digital scale hack
UChicago - load cell + INA125 op-amp + Arduino
load cell + INA125