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SparkFun Load Cell Amplifier - HX711 秤重感測器模組

SparkFun Load Cell Amplifier – HX711 秤重感測器模組

NT$416 NT$360

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貨號: PMD-000809 分類: 標籤: , , , , , , ,

描述

SparkFun Load Cell Amplifier – HX711 秤重感測器模組 美國 SparkFun 原裝進口

SparkFun稱重傳感器放大器是HX711 IC的小型接線板，可讓您輕鬆讀取稱重傳感器來測量重量。通過將放大器連接到微控制器，您將能夠讀取稱重傳感器電阻的變化，並且通過一些校準，您將能夠獲得非常準確的重量測量結果。這可以方便地創建自己的工業規模，過程控製或簡單的存在檢測。

這個版本的SparkFun稱重傳感器放大器具有您特別要求的一些變化！我們將模擬和數字電源分開，並為數字電源增加了一個3.3uH電感和一個0.1uF濾波電容。

HX711使用雙線接口（時鐘和數據）進行通信。任何微控制器的GPIO引腳都可以工作，並且已經編寫了大量的庫，使得從HX711讀取數據變得非常容易。檢查下面的連接指南以獲取更多信息。

稱重傳感器使用四線惠斯通電橋配置連接到HX711。這些通常是紅色，黑色，白色，GRN和YLW。每種顏色對應於稱重傳感器的常規顏色編碼：

  • 紅色（Excitation+或VCC）
  • 黑色（Excitation 或GND）
  • 白色（Amplifier+，信號+或輸出+）
  • 綠色（A-，S-或O-）
  • 黃色（Shield）

YLW引腳用作可選輸入，不連接到應變儀，但用於接地和屏蔽外部EMI（電磁干擾）。請記住，某些稱重傳感器在顏色編碼方面可能會略有差異。

規格與特色

  • 工作電壓：2.7V-5V
  • 工作電流：<1.5mA
  • 可選的10SPS或80SPS輸出數據速率
  • 同時提供50和60Hz電源抑制

原廠技術文件與範例

SparkFun Load Cell Amplifier – HX711

The SparkFun Load Cell Amplifier is a small breakout board for the HX711 IC that allows you to easily read load cells to measure weight. By connecting the amplifier to your microcontroller you will be able to read the changes in the resistance of the load cell, and with some calibration you’ll be able to get very accurate weight measurements. This can be handy for creating your own industrial scale, process control or simple presence detection. This version of the SparkFun Load Cell Amplifier features a few changes that you specifically asked for! We have separated the analog and digital supply, as well as added a 3.3uH inductor and a 0.1uF filter capacitor for digital supply. The HX711 uses a two-wire interface (Clock and Data) for communication. Any microcontroller’s GPIO pins should work, and numerous libraries have been written, making it easy to read data from the HX711. Check the hookup guide below for more information. Load cells use a four-wire Wheatstone bridge configuration to connect to the HX711. These are commonly colored RED, BLK, WHT, GRN and YLW. Each color corresponds to the conventional color coding of load cells:

  • Red (Excitation+ or VCC)
  • Black (Excitation- or GND)
  • White (Amplifier+, Signal+ or Output+)
  • Green (A-, S- or O-)
  • Yellow (Shield)

The YLW pin acts as an optional input that is not hooked up to the strain gauge but is utilized to ground and shield against outside EMI (electromagnetic interference). Please keep in mind that some load cells might have slight variations in color coding. Note: Special thanks to Bodge for supplying the Library for the HX711! Get Started with the HX711 Load Cell Amplifier Guide

FEATURES

  • Operation Voltage: 2.7V–5V
  • Operation Current: < 1.5mA
  • Selectable 10SPS or 80SPS output data rate
  • Simultaneous 50 and 60Hz supply rejection

DOCUMENTS

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