DHT11数字温湿度传感器是一款含有已校准数字信号输出的温湿度复合传感器。其成本低、长期稳定、可以测量相对湿度和温度测量,并可以只使用一根数据线进行温湿度采集。 一、模块来源 采购链接: DHT11温度模块 湿度模块 温湿度模块 DHT11传感器 资料下载链接: ...
TheDHT11 sensorcan either be purchased as a sensor or as a module. Either way, the performance of the sensor is same. The sensor will come as a 4-pin package out of which only three pins will be used whereas the module will come with three pins as shown above. The only difference b...
// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins) Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1); #define DHTPIN 0 // Digital pin connected to the DHT sensor : GPIO0 - D3 // Uncomment the type of sensor in use: #define DHTTYPE D...
#define DHTPIN 2 // Digital pin connected to the DHT sensor // Feather HUZZAH ESP8266 note: use pins 3, 4, 5, 12, 13 or 14 -- // Pin 15 can work but DHT must be disconnected during program upload. // Uncomment whatever type you're using! //#define DHTTYPE DHT11 // DHT 11...
4 pins with 0.1" spacing As you can see, theDHT22/AM2302is a little more accurate and good over a slightly larger range. Both use a single digital pin and are 'sluggish' in that you can't query them more than once every second or two. ...
uint8 readSensorData(void) { uint8 crc; uint8 i; pinMode(pinNumber,OUTPUT); // set mode to output digitalWrite(pinNumber, 0); // output a high level delay(25); digitalWrite(pinNumber, 1); // output a low level pinMode(pinNumber, INPUT); // set mode to input ...
connected with an 8-bit single-chip computer. Every sensor of this model is temperature compensated and calibrated in an accurate calibration chamber and the calibration-coefficient is saved in the type of program in OTP memory, when the sensor is detecting, it will cite coefficient from memory....
NOTE: If you are using a module with a DHT sensor, it will usually only come with three pins. The pins should be labeled so you know how to wire them. Also, many of these modules already come with an internal pull-up resistor so you don't need to add one to your circuit. ...
If you got a DHT11 or DHT22 sensor on a breakout board, they only come with three pins and have an internal pull-up resistor on the data pin. In this case, wiring is even simpler and you don’t need to wire an external resistor. The DHT breakout boards usually have labels on the...
h > #include < Adafruit_Sensor.h > #include < DHT.h > #define SCREEN_WIDTH 128 // OLED display width, in pixels #define SCREEN_HEIGHT 64 // OLED display height, in pixels // Declaration for an SSD1306 display connected to I2C (SDA, SCL pins) Adafruit_SSD1306 display(...