HX711 Class Reference

API for the HX711 Analog-to-Digital Converter. More...

Detailed Description

• ID: hx711
• Name: HX711 Analog-to-Digital Converter
• Category: electric
• Manufacturer: generic
• Link: http://www.dfrobot.com/image/data/SEN0160/hx711_english.pdf
• Connection: gpio

HX711 is a precision 24-bit analog-to-digital converter (ADC) designed for weight scales and industrial control applications to interface directly with a bridge sensor. This module was tested on the Intel(R) Galileo Gen 2 board.

Public Member Functions
synchronized void	delete ()
	HX711 (short data, short sck, short gain)
	HX711 (short data, short sck)
long	read ()
void	setGain (short gain)
void	setGain ()
long	readAverage (short times)
long	readAverage ()
double	getValue (short times)
double	getValue ()
float	getUnits (short times)
float	getUnits ()
void	tare (short times)
void	tare ()
void	setScale (float scale)
void	setScale ()

Constructor & Destructor Documentation

HX711	(	short	data,
		short	sck,
		short	gain
	)

HX711 constructor

Parameters

data	Defines the data pin
sck	Defines the clock pin
gain	Defines the gain factor Valid values are 128 or 64 for channel A; channel B works with a 32-gain factor only

Member Function Documentation

float getUnits

(

short

times

)

Returns getValue() divided by SCALE

Parameters

times

Defines how many readings to do

Returns

Raw value divided by a value obtained via calibration

double getValue

(

short

times

)

Returns (readAverage() - OFFSET)

Parameters

times

Defines how many readings to do

Returns

Current value without the tare weight

long read

(

)

Waits for the chip to be ready and returns a reading

Returns

Raw ADC reading

long readAverage

(

short

times

)

Returns an average reading

Parameters

times

Defines how many reading to do

Returns

Average reading

void setGain

(

short

gain

)

Sets the gain factor; takes effect only after a call to read() channel A can be set for a 128 or 64 gain; channel B has a fixed 32-gain factor depending on the parameter; the channel is also set to either A or B

Parameters

gain	Defines the gain factor

void setScale

(

float

scale

)

Sets the SCALE value This value is used to convert the raw data to human-readable data (measurement units)

Parameters

scale

Value obtained via calibration

void tare

(

short

times

)

Sets the OFFSET value for the tare weight

Parameters

times

Defines how many times to read the tare value

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The documentation for this class was generated from the following file:

• /var/lib/jenkins/workspace/upm-doc-stable/build-33/src/hx711/HX711.java