Interface the HX711 to Pi

DCT Electronic HX711 board plugged into P5

HX711

Building a Raspberry based electronic scale using the DCT Electronic HX711 board is as easy as Pi!

The DCT board comes with two sets of headers, straight and right angle, and a metal shield.

You will need a female header 1x4 (2.54mm Pitch Straight Single Row PCB Female Pin Headers) and load cells.

1. Order the board for $6.99 on Ebay
   This one for $2.19 should work, too.
2. Download the software from gitHub
   git clone https://github.com/ggurov/hx711
3. Solder a 1x4 straight female header in P5 on Pi (bottom side of board) and a 1x4 male header on the DCT board
4. Solder the load cells to the DCT board.
5. Plug the DTC board into the Pi.
6. Change the GPIO pins from 30 and 31 to 28 and 30 in hx711.c This way they are all on one side of P5:

#define CLOCK_PIN       30
#define DATA_PIN        28

P5	Pi	HX711
P5-1	+5	Vcc
P5-3	GPIO28	DO/RX
P5-5	GPIO30	CK/TX
P5-7	Ground	GND