Hx711 Sensor not stable

Other Hardware Sensors
1

I have installed a complete HX711 circuit on my project PCB and it is working with ATMEGA 2560, but the readings have too much fluctuation so my tare weight and even the calibration factor is changing after just restarting the ATMEGA 2560.

I personally have these doubts in mind:
1- My soldering techniques aren't good so that is why circuit isn't very clean.
2-Wire lengths are more then it should be so resistance is playing its factor ( length is 1 feet).

Please let me know what other factors are involved that are making this worst for me.
Below is the exact schematics that i used to make the circuit

2

What test equipment do you have? Start by scoping the Avdd supply to make sure that is clean with no interference.

3

@OP

Have you built the amplifier/ADC circuit using/connecting/soldering all the discrete components together? Why have you not used the following pre-fabricated HX711 Module?

HX711ModulePic.jpg
HX711ModulePic.jpg1061×665 998 KB

HX711ModulePic.jpg
HX711ModulePic.jpg1061×665 998 KB

4

MorganS:
What test equipment do you have? Start by scoping the Avdd supply to make sure that is clean with no interference.

i have put 0.1uF capacitor on AVDD.