ESP8266: DIY Wifi Kitchen Scale

This week I finally received all the necessary pieces to build a internet connected kitchen scale. The ingredients are: a load cell (Wikipedia), a high resolution ADC (HX711) and of course a ESP8266 based NodeMCU V1.0 module. For the moment I’m not logging the data coming from the scale to the internet but I rather display it on one of my beloved SSD1306 I2C 128×64 pixel OLED display.
This load cell is specified for a range of 1kg so that’s where it is most accurate. And comparing the data to my commercial scale shows rather good accuracy!


Load Cell    HX711
Red E+
Black E-
Green A-
White A+


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