Weight I2C Unit

The Weight I2C Unit is a weighing acquisition transmitter unit that adopts the “STM32+HX711 chip” solution to achieve 24-bit precision weight measurement through I2C communication and does not include a load cell sensor. This unit is capable of measuring weight and also includes various filters.

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Micropython Example:

import os, sys, io
import M5
from M5 import *
from hardware import *
from unit import WEIGHT_I2CUnit
import time

i2c0 = I2C(0, scl=Pin(1), sda=Pin(2), freq=100000)
weight_i2c0 = WEIGHT_I2CUnit(i2c0)
print(weight_i2c_0.get_adc_raw)
print(weight_i2c_0.get_weight_float)
time.sleep_ms(100)

UIFLOW2 Example:

class WEIGHT_I2CUnit

Constructors

class WEIGHT_I2CUnit(i2c0, 0x26)

Create an WEIGHT_I2CUnit object.

I2C0 is I2C Port.
0x26 is default I2C address

UIFLOW2:

Methods

WEIGHT_I2CUnit.get_adc_raw()

Gets the raw adc value.

UIFLOW2:

WEIGHT_I2CUnit.get_weight_float()

Gets the weight in grams float value.

UIFLOW2:

WEIGHT_I2CUnit.get_weight_int()

Gets the weight in grams int value.

UIFLOW2:

WEIGHT_I2CUnit.get_weight_str()

Gets the weight in grams string value.

UIFLOW2:

WEIGHT_I2CUnit.set_reset_offset()

Reset the offset value(Tare).

UIFLOW2:

WEIGHT_I2CUnit.set_calibration(weight1_g, weight1_adc, weight2_g, weight2_adc)

Calibrates the Load sensor.

weight1_g: Weight1 in grams.
weight1_adc: Weight1 in ADC value.
weight2_g: Weight2 in grams.
weight2_adc: Weight2 in ADC value.

calibration steps:

1.Reset offset(Tare). 2.Get the raw ADC value at no-load weight, this is the Raw ADC of zero weight in 0g. 3.Put some weight on it, then get adc, this is the load weight adc value and the gram weight you put on it.

UIFLOW2: