Grove Water Level Sensor (10cm) 水位高度傳感器

描述

Grove Water Level Sensor (10cm) 水位高度傳感器

Grove Water Level Sensor (10cm) 水位傳感器是一種非常精確的傳感器，可在水位傳感應用中提供幫助。它是完全防水的，並使用電容墊檢測高達10cm的水位。我們在模塊的PCB上使用了電容性焊盤，並在PCB上進行了保形塗層，以使傳感器免受潮氣，灰塵，化學藥品和高溫的影響。我們相信，這項技術將使您輕鬆進行準確的水位測量（精度為±5mm）。

功能

• 易於使用（無需焊接即可使用Grove連接器）
• 基於電容感應
• 防水
• 保形塗料
• 耐腐蝕
• 檢測高達10厘米的水位
• I2C接口

硬件概述

教學文件與資源

• 官方WIFI教學

Grove – Water Level Sensor (10cm) for Arduino

Mom: Hey son, our tank is overflowing again!!!
Son: Ohh…. not again…. (Now it’s time to use what I learnt at my electronics class). Don’t worry Mom, I will use a Grove – Water Level Sensor and fix the problem! We have dedicated our time to help you get started with this sensor quickly and easily. Try the example code and experience the demo above with clear codes.

Features

• Easy to use (Use Grove Connector without soldering)
• Based on capacitive sensing
• Waterproof
• Conformal Coating
• Corrosion Resistant
• Detect up to 10cm water levels
• I2C Interface

Description

What better way to describe a product without having a story behind it?

Well…A few months ago, we thought of developing a water level sensor, but we wanted it to be different, unlike traditional water level sensing techniques such as using Ultrasonic Sensing and Resistance Based Sensing.

We have tested out different water level sensing methods such as using Non-contact capacitance-based sensing where we placed the sensor outside the container filled with liquid and also use a Carbon Stick to detect the water level.

But we figured that the results we got were not up to our expectations and after long period of use, the Carbon started to chemically react with water which made this technique not ideal.

So, we finally came up with a solution by using Capacitance Sensing technique. We used capacitive pads on the PCB of the module and did conformal coating over the PCB to make the sensor protect against moisture, dust, chemicals and high temperatures. We believe that this technique will allow you to make accurate water level measurements (±5mm accuracy) easily.

Let’s look at the difference between few water level sensing methods.

	Ultrasonic Distance Sensor	Sensor based on Resistance	Grove – Water Level Sensor
Principle	Ultrasonic Waves	Resistance	Capacitance
Communication Interface	Digital	Analog	I2C
Operating Voltage	3.3/5V	3.3/5V	3.3/5V
Waterproof	No	Yes	Yes

Specifications

• 2 x 8-bit ATTINY1616 MCUs
• Compatible with 3.3/ 5V power supply
• Measurement Accuracy: ±5mm
• Uses two I2C addresses at the same time: 0x78 and 0x77
• Working Temperature Range: -40°C to 105°C
• Weight: G.W 9.8g
• Dimensions: 20mmx 133mm

Applications

• Tank overflow detection
• Liquid level sensing applications

Hardware Overview