重量 I2C Unit

Weight I2C Unit 是一款称重采集变送器单元，采用 “STM32+HX711 chip” 方案，通过 I2C 通信实现 24-bit 精度的重量测量，且不包含称重传感器（load cell sensor）。该单元能够测量重量，并且还包含多种滤波器。

支持以下产品：

MicroPython 应用示例

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 应用示例

weight-i2c-demo.m5f2

class WEIGHT_I2CUnit

Constructors

class WEIGHT_I2CUnit(i2c0, 0x26)

创建一个 WEIGHT_I2CUnit 对象。

I2C0 是 I2C 端口。
0x26 是默认 I2C 地址

UiFlow2

Methods

WEIGHT_I2CUnit.get_adc_raw()

获取原始 ADC 值。

UiFlow2

WEIGHT_I2CUnit.get_weight_float()

获取以克为单位的重量浮点值。

UiFlow2

WEIGHT_I2CUnit.get_weight_int()

获取以克为单位的重量整数值。

UiFlow2

WEIGHT_I2CUnit.get_weight_str()

获取以克为单位的重量字符串值。

UiFlow2

WEIGHT_I2CUnit.set_reset_offset()

重置偏移值（去皮）。

UiFlow2

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

校准 Load 传感器。

weight1_g：以克为单位的 Weight1。
weight1_adc：Weight1 的 ADC 值。
weight2_g：Weight2 的单位为克。
weight2_adc：以 ADC 值表示的 Weight2。

校准步骤：

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