HTU21 數位微型型溫濕度感測器模組 GY-21 溫溼度傳感氣模組 I2C 通訊
原始價格：NT$280。NT$235目前價格：NT$235。 (未稅)
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HTU21 數位微型型溫濕度感測器模組 GY-21 溫溼度傳感氣模組 I2C 通訊
HTU21 數位微型型溫濕度感測器模組是一種低成本，容易使用的，高度精確的，數字濕度傳感器。您所需要的只有兩條線路用於I 2 C通信，您將獲得相對濕度讀數，例如“45.2％”或“23.1％”以及非常準確的溫度讀數是本模組的特素！ 可以輕鬆取代 DHT22,DHT11 SHT11 , 微型高精度的溫溼度模組, 是您開發微型設備不可或缺的選擇之一。
HTU21 數位微型型溫濕度感測器模組 是由MEAS輸出溫度的新型數字濕度傳感器。在尺寸和智能方面樹立了新標準，嵌入了可回流焊接的雙扁平無引線（DFN）封裝，尺寸僅為3 x 3 x 0.9 mm。該傳感器以數字I²C格式提供校準的線性化信號。HTU21D（F）數字濕度傳感器是專為需要可靠和精確測量的OEM 應用而設計的濕度和溫度即插即用傳感器。用於濕度和溫度數字輸出的模塊可實現與微控制器的直接接口。這些低功率傳感器專為高容量和成本敏感型應用而設計，空間狹小。
每個傳感器都經過單獨校準和測試。批號標識印在傳感器上，電子標識碼存儲在芯片上 – 可以通過命令讀出。可以檢測到電池電量不足，並通過校驗和提高通信可靠性。這些數字濕度傳感器的分辨率可以通過命令（RH / T為8 / 12bit到12 / 14bit）進行更改。
- 電壓：2.1V至3.6V
- 低功耗：-0.15uA
- I2C接口
- 分辨率：0.04％RH，0.02°C
- 精度：±2％RH，±3°C
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/* HTU21D Humidity Sensor Example Code By: Nathan Seidle SparkFun Electronics Date: September 15th, 2013 License: This code is public domain but you buy me a beer if you use this and we meet someday (Beerware license). Uses the HTU21D library to display the current humidity and temperature Open serial monitor at 9600 baud to see readings. Errors 998 if not sensor is detected. Error 999 if CRC is bad. Hardware Connections (Breakoutboard to Arduino): -VCC = 3.3V -GND = GND -SDA = A4 (use inline 10k resistor if your board is 5V) -SCL = A5 (use inline 10k resistor if your board is 5V) */ #include <Wire.h> #include "HTU21D.h" //Create an instance of the object HTU21D myHumidity; void setup() { Serial.begin(9600); Serial.println("HTU21D Example!"); myHumidity.begin(); } void loop() { float humd = myHumidity.readHumidity(); float temp = myHumidity.readTemperature(); Serial.print("Time:"); Serial.print(millis()); Serial.print(" Temperature:"); Serial.print(temp, 1); Serial.print("C"); Serial.print(" Humidity:"); Serial.print(humd, 1); Serial.print("%"); Serial.println(); delay(1000); } |
GY-21 HTU21 Digital Humidity Temperature Sensor Module Replace SHT11 SHT15
The Humidity and Temperature Sensor is an Arduino-compatible sensor board that carries an SHT21 digital humidity and temperature sensor from Sensirion. It has a 4-pin interface that can communicate directly with the analog pins on the Arduino.
The SHT21 utilizes a capacitive sensor element to measure humidity, while the temperature is measured by a band gap sensor. Both sensors are seamlessly coupled to a 14-bit ADC, which then transmits digital data to the Arduino over the I2C protocol. Because of the sensor¡¯s tiny size, it has incredibly low power consumption, making it suited for virtually any application.
Specifications:
- * Energy consumption: 80 uW (at 12 bit, 3V, 1 measurement/s)
- * Relative Humidity operating range: 0-100% RH
- * Relative Humidity resolution of 0.03%
- * Relative Humidity Response Time of 8 sec (tau 63%)
- * Temperature operating range: -40 to +125¡æ
- * Temperature resolution of 0.01 C
- * 4 pins: +5V, GND, Clock (SCL), Data (SDA)
- * Bidirectional communication over a single pin on I2C protocol
- * Board is 5V tolerant, allowing sensor to run from a 5V supply on Arduino I/O pins
Applications
- * Homes, basements and HVAC systems for measuring humidity
- * People with physical conditions sensitive to humidity
- * Home ventilating, heating and air conditioning systems
- * Meteorology stations to predict or check weather temperatures
- * Gardens or greenhouses to check humidity and temperatures
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