Difference between revisions of "WeMOS D1 mini: DHT11 read suhu dan humidity"
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+ | // Example testing sketch for various DHT humidity/temperature sensors | ||
+ | // Written by ladyada, public domain | ||
+ | |||
+ | // REQUIRES the following Arduino libraries: | ||
+ | // - DHT Sensor Library: https://github.com/adafruit/DHT-sensor-library | ||
+ | // - Adafruit Unified Sensor Lib: https://github.com/adafruit/Adafruit_Sensor | ||
+ | |||
+ | #include "DHT.h" | ||
+ | |||
+ | #define DHTPIN D2 // 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 | ||
+ | //#define DHTTYPE DHT22 // DHT 22 (AM2302), AM2321 | ||
+ | //#define DHTTYPE DHT21 // DHT 21 (AM2301) | ||
+ | |||
+ | // Connect pin 1 (on the left) of the sensor to +5V | ||
+ | // NOTE: If using a board with 3.3V logic like an Arduino Due connect pin 1 | ||
+ | // to 3.3V instead of 5V! | ||
+ | // Connect pin 2 of the sensor to whatever your DHTPIN is | ||
+ | // Connect pin 3 (on the right) of the sensor to GROUND (if your sensor has 3 pins) | ||
+ | // Connect pin 4 (on the right) of the sensor to GROUND and leave the pin 3 EMPTY (if your sensor has 4 pins) | ||
+ | // Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor | ||
+ | // Initialize DHT sensor. | ||
+ | // Note that older versions of this library took an optional third parameter to | ||
+ | // tweak the timings for faster processors. This parameter is no longer needed | ||
+ | // as the current DHT reading algorithm adjusts itself to work on faster procs. | ||
+ | DHT dht(DHTPIN, DHTTYPE); | ||
+ | |||
+ | void setup() { | ||
+ | Serial.begin(9600); | ||
+ | Serial.println(F("DHTxx test!")); | ||
+ | |||
+ | dht.begin(); | ||
+ | } | ||
+ | |||
+ | void loop() { | ||
+ | // Wait a few seconds between measurements. | ||
+ | delay(2000); | ||
+ | |||
+ | // Reading temperature or humidity takes about 250 milliseconds! | ||
+ | // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor) | ||
+ | float h = dht.readHumidity(); | ||
+ | // Read temperature as Celsius (the default) | ||
+ | float t = dht.readTemperature(); | ||
+ | // Read temperature as Fahrenheit (isFahrenheit = true) | ||
+ | float f = dht.readTemperature(true); | ||
+ | |||
+ | // Check if any reads failed and exit early (to try again). | ||
+ | if (isnan(h) || isnan(t) || isnan(f)) { | ||
+ | Serial.println(F("Failed to read from DHT sensor!")); | ||
+ | return; | ||
+ | } | ||
+ | // Compute heat index in Fahrenheit (the default) | ||
+ | float hif = dht.computeHeatIndex(f, h); | ||
+ | // Compute heat index in Celsius (isFahreheit = false) | ||
+ | float hic = dht.computeHeatIndex(t, h, false); | ||
+ | |||
+ | Serial.print(F("Humidity: ")); | ||
+ | Serial.print(h); | ||
+ | Serial.print(F("% Temperature: ")); | ||
+ | Serial.print(t); | ||
+ | Serial.print(F("°C ")); | ||
+ | Serial.print(f); | ||
+ | Serial.print(F("°F Heat index: ")); | ||
+ | Serial.print(hic); | ||
+ | Serial.print(F("°C ")); | ||
+ | Serial.print(hif); | ||
+ | Serial.println(F("°F")); | ||
+ | } | ||
==Referensi== | ==Referensi== | ||
* https://dewo.wordpress.com/2016/07/10/pemantau-suhu-kelembaban-udara-dengan-wemos-d1-mini-dht11/ | * https://dewo.wordpress.com/2016/07/10/pemantau-suhu-kelembaban-udara-dengan-wemos-d1-mini-dht11/ |
Latest revision as of 11:19, 1 June 2023
Sumber: https://dewo.wordpress.com/2016/07/10/pemantau-suhu-kelembaban-udara-dengan-wemos-d1-mini-dht11/
Library
Download dari
https://github.com/adafruit/Adafruit_Sensor mv Adafruit_Sensor-master.zip ../Arduino/libraries/
https://github.com/adafruit/DHT-sensor-library/archive/refs/heads/master.zip mv DHT-sensor-library-master.zip ~/Arduino/libraries/
Sambungan ke Wemos D1 mini
DHT11 Wemos VCC 3.3V DATA D2 GND GND
Contoh
// Example testing sketch for various DHT humidity/temperature sensors // Written by ladyada, public domain // REQUIRES the following Arduino libraries: // - DHT Sensor Library: https://github.com/adafruit/DHT-sensor-library // - Adafruit Unified Sensor Lib: https://github.com/adafruit/Adafruit_Sensor #include "DHT.h" #define DHTPIN D2 // 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 //#define DHTTYPE DHT22 // DHT 22 (AM2302), AM2321 //#define DHTTYPE DHT21 // DHT 21 (AM2301) // Connect pin 1 (on the left) of the sensor to +5V // NOTE: If using a board with 3.3V logic like an Arduino Due connect pin 1 // to 3.3V instead of 5V! // Connect pin 2 of the sensor to whatever your DHTPIN is // Connect pin 3 (on the right) of the sensor to GROUND (if your sensor has 3 pins) // Connect pin 4 (on the right) of the sensor to GROUND and leave the pin 3 EMPTY (if your sensor has 4 pins) // Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor
// Initialize DHT sensor. // Note that older versions of this library took an optional third parameter to // tweak the timings for faster processors. This parameter is no longer needed // as the current DHT reading algorithm adjusts itself to work on faster procs. DHT dht(DHTPIN, DHTTYPE); void setup() { Serial.begin(9600); Serial.println(F("DHTxx test!")); dht.begin(); } void loop() { // Wait a few seconds between measurements. delay(2000); // Reading temperature or humidity takes about 250 milliseconds! // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor) float h = dht.readHumidity(); // Read temperature as Celsius (the default) float t = dht.readTemperature(); // Read temperature as Fahrenheit (isFahrenheit = true) float f = dht.readTemperature(true); // Check if any reads failed and exit early (to try again). if (isnan(h) || isnan(t) || isnan(f)) { Serial.println(F("Failed to read from DHT sensor!")); return; }
// Compute heat index in Fahrenheit (the default) float hif = dht.computeHeatIndex(f, h); // Compute heat index in Celsius (isFahreheit = false) float hic = dht.computeHeatIndex(t, h, false); Serial.print(F("Humidity: ")); Serial.print(h); Serial.print(F("% Temperature: ")); Serial.print(t); Serial.print(F("°C ")); Serial.print(f); Serial.print(F("°F Heat index: ")); Serial.print(hic); Serial.print(F("°C ")); Serial.print(hif); Serial.println(F("°F")); }