load cell

Projects General Guidance
1

Hi,
i want make a project of load cell which generate a purchase order everytime that the quantity threshold is reached, and i want send the result to an IOT system for to generate automatically a purchase order, i hesitate about the choice of materials, can someone advice me plz what is the best way:

-load cell+HX711+Arduino Yun

Or

-load cell+HX711+Arduino Uno+ESP8266

-plus i found some exemple of load cell in internet, i dont know if it's a trusted offer, i show u the links:

https://www.zartronic.fr/balance-3kg-carte-hx711-p-473.html?zenid=n1a8r169rfar9qkdqe5mq5o613
http://www.elecrow.com/weight-sensor-scales-kit-20kg-p-714.html

are they compatible with an arduino "Yun or Uno"?

what it was interesting is that i can connect them with an arduino without any complication,do u think thta's the best choice?
tnx for your help.

2

But the Yun and the ESP8266 can have troubles. The Yun is overcomplicated and the ESP8266 is not fully compatible.
I think that the Arduino Wifi Shield 101 is the most reliable.
Or the Adafruit Feather Wifi : Adafruit Feather M0 WiFi - ATSAMD21 + ATWINC1500 : ID 3010 : $39.95 : Adafruit Industries, Unique & fun DIY electronics and kits

With a load cell, the construction is important. The first link to the round one seems the easiest. Place the weight in the middle and it should be okay. The construction looks fine, beside the ugly screw in the plexiglass.

The HX711 works at 3.3V and 5V, so it should be compatible with every Arduino board.