Difference between revisions of "WeMOS: DHT11 - sensor suhu dan humidity"
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− | == | + | ==Code== |
#include <DHT.h> | #include <DHT.h> | ||
#include <ESP8266WiFi.h> | #include <ESP8266WiFi.h> | ||
− | // replace with your channel’s thingspeak API key and your SSID and password | + | // replace with your channel’s thingspeak API key and your SSID and password |
− | String apiKey = " | + | String apiKey = "0C2X0PGNFHOEGYZA"; |
− | const char* ssid = " | + | const char* ssid = "Wisma Anggrek"; |
− | const char* password = " | + | const char* password = "@nggr3kbul@n"; |
const char* server = "api.thingspeak.com"; | const char* server = "api.thingspeak.com"; | ||
− | #define DHTPIN | + | #define DHTPIN D7 |
#define DHTTYPE DHT11 | #define DHTTYPE DHT11 | ||
Line 25: | Line 25: | ||
void setup() | void setup() | ||
{ | { | ||
− | + | Serial.begin(115200); | |
− | + | delay(10); | |
− | + | dht.begin(); | |
− | + | ||
− | + | WiFi.begin(ssid, password); | |
− | + | ||
− | + | Serial.println(); | |
− | + | Serial.println(); | |
− | + | Serial.print("Connecting to "); | |
− | + | Serial.println(ssid); | |
− | + | WiFi.begin(ssid, password); | |
− | + | ||
− | + | while (WiFi.status() != WL_CONNECTED) | |
− | + | { | |
− | + | delay(500); | |
− | + | Serial.print("."); | |
− | + | } | |
− | + | Serial.println(""); | |
− | + | Serial.println("WiFi connected"); | |
− | |||
} | } | ||
void loop() | void loop() | ||
{ | { | ||
+ | float h = dht.readHumidity(); | ||
+ | float t = dht.readTemperature(); | ||
+ | if (isnan(h) || isnan(t)) | ||
+ | { | ||
+ | Serial.println("Failed to read from DHT sensor!"); | ||
+ | return; | ||
+ | } | ||
− | + | if (client.connect(server,80)) { | |
− | + | String postStr = apiKey; | |
− | + | postStr +="&field1="; | |
− | + | postStr += String(t); | |
− | + | postStr +="&field2="; | |
− | + | postStr += String(h); | |
+ | postStr += "\r\n\r\n"; | ||
+ | |||
+ | client.print("POST /update HTTP/1.1\n"); | ||
+ | client.print("Host: api.thingspeak.com\n"); | ||
+ | client.print("Connection: close\n"); | ||
+ | client.print("X-THINGSPEAKAPIKEY: "+apiKey+"\n"); | ||
+ | client.print("Content-Type: application/x-www-form- urlencoded\n"); | ||
+ | client.print("Content-Length: "); | ||
+ | client.print(postStr.length()); | ||
+ | client.print("\n\n"); | ||
+ | client.print(postStr); | ||
+ | |||
+ | Serial.print("Temperature: "); | ||
+ | Serial.print(t); | ||
+ | Serial.print(" degrees Celsius Humidity: "); | ||
+ | Serial.print(h); | ||
+ | Serial.println("\nSending data to Thingspeak"); | ||
+ | } | ||
+ | client.stop(); | ||
+ | |||
+ | Serial.println("Waiting 20 secs"); | ||
+ | // thingspeak needs at least a 15 sec delay between updates | ||
+ | // 20 seconds to be safe | ||
+ | delay(20000); | ||
} | } | ||
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==Referensi== | ==Referensi== |
Revision as of 08:07, 9 November 2019
Sumber: http://www.esp8266learning.com/dht11-sensor-data-to-thingspeak-using-a-wemos-d1.php
Code
#include <DHT.h> #include <ESP8266WiFi.h> // replace with your channel’s thingspeak API key and your SSID and password String apiKey = "0C2X0PGNFHOEGYZA"; const char* ssid = "Wisma Anggrek"; const char* password = "@nggr3kbul@n"; const char* server = "api.thingspeak.com"; #define DHTPIN D7 #define DHTTYPE DHT11 DHT dht(DHTPIN, DHTTYPE); WiFiClient client; void setup() { Serial.begin(115200); delay(10); dht.begin(); WiFi.begin(ssid, password); Serial.println(); Serial.println(); Serial.print("Connecting to "); Serial.println(ssid); WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println(""); Serial.println("WiFi connected"); } void loop() { float h = dht.readHumidity(); float t = dht.readTemperature(); if (isnan(h) || isnan(t)) { Serial.println("Failed to read from DHT sensor!"); return; } if (client.connect(server,80)) { String postStr = apiKey; postStr +="&field1="; postStr += String(t); postStr +="&field2="; postStr += String(h); postStr += "\r\n\r\n"; client.print("POST /update HTTP/1.1\n"); client.print("Host: api.thingspeak.com\n"); client.print("Connection: close\n"); client.print("X-THINGSPEAKAPIKEY: "+apiKey+"\n"); client.print("Content-Type: application/x-www-form- urlencoded\n"); client.print("Content-Length: "); client.print(postStr.length()); client.print("\n\n"); client.print(postStr); Serial.print("Temperature: "); Serial.print(t); Serial.print(" degrees Celsius Humidity: "); Serial.print(h); Serial.println("\nSending data to Thingspeak"); } client.stop(); Serial.println("Waiting 20 secs"); // thingspeak needs at least a 15 sec delay between updates // 20 seconds to be safe delay(20000); }
Referensi