Reading bending strain in two directions with HX711 amplifier

Sensors Force & Weight
1

Hello,

I want to measure the strain of a bending beam in a battery supplied application. For this reason I am thinking of using HX711 amplifier shield before connecting the bridge to my Nucleo F334R8 microprocessor .

https://www.sparkfun.com/products/13879

I am thinking of using a half bridge configuration (thus 2 strain gages will be used in opossites sides of the beam)

half bridge.png
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My question is whether HX711 amplifier will be able to identify the direction of the bending (which gage is stretched and which is compressed) ?

From what I understand Wheatstone bridge output voltage will be positive in one case and negative in the second case, right ? If yes, how are HX711 able to measure the change in the sign of the voltage?

(HX711 connects to one digital pin and one pwm pin)

2

From what I understand Wheatstone bridge output voltage will be positive in one case and negative in the second case, right ?

Yep, that is correct.

If yes, how are HX711 able to measure the change in the sign of the voltage?

Your readings will either be increasing or decreasing.