Leo,
I have yes. I've seen the problems with the ground on these chips. I did ground the E- like you suggested without change. I do not think it's the chip though.
I've tried the same setup on my Arduino mega 2560 and got the readings from it. But the controller I want to use it with is a SparkFun 7-Segment Serial Display that has an Atmega328 on it. I've loaded the example code from the hx711.h library (Bogdan Necula). (FTDI programmer). Using external 6V battery for hx711 which shares ground with the controller.
I'll use Sevseg library to do the segments once I get a reading.
I can't be sure I'm getting data from the hx711 but the ADC raw readings are coming in zero. It has also sent a NaN once so I thought maybe a register on the atmega328 is wrong? ( the serial 7 seg comes pre-programmed to be used as i2c slave).
I'm out of ideas. But I believe someone smarter will figure it out