def main():
GPIO.setmode(GPIO.BCM)
hx = hx711.HX711(dout_pin=5, pd_sck_pin=6)
zero_the_scale(hx)
calibrate_scale(hx)
(tare_weight, total_weight) = get_tare_and_full_weight(hx)
plot_reading(hx, tare_weight, total_weight - tare_weight)
""" @file fu.py
This file contains a test program for an HX711 Force Unit.
"""
import hx711
fubar = hx711.HX711(19, 5)
fubar.tare()
value = fubar.read()
value = fubar.get_value()
print(value)
from adafruit_pn532.i2c import PN532_I2C
# Constants
REFERENCE_UNIT = -2053.4638810934416
NFC_PIN_1 = 5
NFC_PIN_2 = 6
NR_SCALE_READS = 5
API_URL = 'ws://89.212.198.159:8000/ws/'
# Setup nfc reader
i2c = busio.I2C(board.SCL, board.SDA)
pn532 = PN532_I2C(i2c)
pn532.SAM_configuration()
# Setup scale sensor.
hx = hx711.HX711(NFC_PIN_1, NFC_PIN_2)
hx.set_reading_format("MSB", "MSB")
hx.reset()
hx.tare()
hx.set_reference_unit(REFERENCE_UNIT)
# Connect to server with socket
async def loop():
async with websockets.connect(API_URL) as sock:
while True:
# Read tag and weight.
uid = pn532.read_passive_target(timeout=0.5)
weight = hx.get_weight(NR_SCALE_READS)
print(uid, weight)
import sys
import hx711
DT = 23 #dt pino no hx711
clk = 24 #clk pino no hx711
GPIO.setwarnings(False)
def cleanAndExit():
GPIO.cleanup()
sys.exit()
hx = hx711.HX711(DT, clk)
hx.set_reading_format("LSB", "MSB")
hx.set_reference_unit(-57100.26666666644 / 9.45)
hx.reset()
hx.tare()
def getvalue():
val = hx.get_weight(2)
hx.power_down()
hx.power_up()
if (val < 0):
import hx711 as hx
import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BCM)
num_readings = 10000
hx = hx.HX711(
dout_pin=13, pd_sck_pin=19, gain_channel_A=128, select_channel='A')
# Get readings
def getreadings(nr):
readings = []
for i in range(nr):
readings.append(hx._read())
print(i)
return readings
print('reading..')
readings = getreadings(num_readings)
# Save to textfile
f = open("dataset5_totang.py", "a")
f.write('data = [')
for val in readings:
f.write('{}, '.format(val))
f.write(']')
f.close()