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January 24, 2021 12:44
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esp8266 weather station
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| #include <ESP8266WiFi.h> | |
| #include <TM1637Display.h> | |
| #include <ESP8266HTTPClient.h> | |
| #include <ESP8266WiFiMulti.h> | |
| #include "DHTesp.h" | |
| const char* ssid = "HUAWEI-E8372-26A6";//put your wifi ssid here | |
| const char* password = "***";//put your wifi password here | |
| const int CLK = D2; //Set the CLK pin connection to the display | |
| const int DIO = D3; //Set the DIO pin connection to the display | |
| TM1637Display display(CLK, DIO); //set up the 4-Digit Display. | |
| WiFiClient client; | |
| HTTPClient http; | |
| ESP8266WiFiMulti WiFiMulti; | |
| DHTesp dht; | |
| void setup_wifi() { | |
| delay(100); | |
| String thisBoard = ARDUINO_BOARD; | |
| Serial.println(thisBoard); | |
| // We start by connecting to a WiFi network | |
| Serial.print("Connecting to "); | |
| Serial.println(ssid); | |
| WiFi.begin(ssid, password); | |
| while (WiFi.status() != WL_CONNECTED) { | |
| delay(500); | |
| Serial.print("."); | |
| } | |
| randomSeed(micros()); | |
| Serial.println(""); | |
| Serial.println("WiFi connected"); | |
| Serial.println("IP address: "); | |
| Serial.println(WiFi.localIP()); | |
| } | |
| void setup() { | |
| dht.setup(D5, DHTesp::DHT22); | |
| Serial.begin(115200); | |
| setup_wifi(); | |
| display.setBrightness(0x0a); //set the diplay to maximum brightness | |
| } | |
| void loop() { | |
| // wait for WiFi connection | |
| if ((WiFiMulti.run() == WL_CONNECTED)) { | |
| delay(dht.getMinimumSamplingPeriod()); | |
| float humidity = dht.getHumidity(); | |
| float temperature = dht.getTemperature(); | |
| Serial.println(temperature); | |
| Serial.println(humidity); | |
| Serial.print("[HTTP] begin...\n"); | |
| if (http.begin(client, "http://api.thingspeak.com/update?api_key=***&field1="+String(temperature)+"&field3="+String(humidity))) { // HTTP | |
| Serial.print("[HTTP] GET...\n"); | |
| // start connection and send HTTP header | |
| int httpCode = http.GET(); | |
| // httpCode will be negative on error | |
| if (httpCode > 0) { | |
| // HTTP header has been send and Server response header has been handled | |
| Serial.printf("[HTTP] GET... code: %d\n", httpCode); | |
| // file found at server | |
| if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY) { | |
| String payload = http.getString(); | |
| Serial.println(payload); | |
| display.showNumberDec(payload.toInt(),false,4,0); | |
| } | |
| } else { | |
| Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str()); | |
| } | |
| http.end(); | |
| } else { | |
| Serial.printf("[HTTP} Unable to connect\n"); | |
| } | |
| } | |
| delay(10000); | |
| } |
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