This electronic scale is a very precise one. Its absolute error is less than 30g with the load of 15kg.
As you know well, the general load cell which is used in this scale has its own histeresis and non-linearity, but I studied this characteristics and implemented the calculation model into the firmware of ESP32 board.
So, my device can transfer the precise scale data to the smartphone via bluetooth link.
Thank you for your looking.
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