digital-body-scale-custom-with-esp8226-using-php-and-MySQL

Displays the data on the weighing results in a web browser in real time and saves it to a MySQL database

materials:

digital body scale custom, esp8266, HX711 load cell amplifier, psu 5v/3A, jumper cable.

Instructions:

1. open the back case with a screwdriver
2. disconnect the pin header male connecting the display and battery pcb with the loadcell cable pcb
3. use the pcb piece as a place to connect the 4 wires (red-black-green-blue) coming from the loadcell pcb scales.
4. solder the jumper cables from the pcb pieces to 4 wires (red-black-green-blue) the weighing loadcell pcb.
5. use a mouse cable or speaker cable containing 4 wires and solder it to the jumper cable pcb piece.
6. match the 4 wires coming from the weighing sensor to the load cell amplifier HX711 red - red, black - black, white - white, green - green
7. adjust the 4 pins on the HX711 load cell amplifier with the pins on the esp8266 board:

VCC   --    5v,

DAT   --    D5,

CLK   --    D6,

GND   --    GND

loadcell pin connect to HX711 green pcb pin

E+     --     E+

S+     --     A+

E-     --     E-

S-     --     A-

loadcell pin connect to HX711 purple pcb pin

E+     --     E+

S+     --     A+

E-     --     E-

S-     --     A-

References:

1. https://github.com/jenizar/nodemcu-displays-and-inserts-weighing-data-into-the-MySQL-using-php
2. https://learn.sparkfun.com/tutorials/load-cell-amplifier-hx711-breakout-hookup-guide/all
3. https://www.instructables.com/Arduino-Bathroom-Scale-With-50-Kg-Load-Cells-and-H/
4. https://youtu.be/LIuf2egMioA