- Wed Dec 04, 2019 5:53 am
#84814
here is - as requested - frankensteins monster:
it compiles ok, it's up to you to get it working .....
Code: Select all
#include <ESP8266WiFi.h>
#include <math.h>
// https://arduino.esp8266.com/stable/package_esp8266com_index.json
unsigned int Rs = 150000;
double Vcc = 3.3;
int cycle_cnt = 0;
// WiFi parameters
#define mySSID "**********"
#define myPWD "********************"
// thingspeak defines
#define tspKEY "api key goes here"
#define tspSVR "api.thingspeak.com"
#define CYCLE 60
WiFiClient tsp_client;
WiFiServer server(80);
void setup() {
Serial.begin(115200);
delay(10);
Serial.println();
// Init DHT
// Connect to WiFi network
WiFi.mode(WIFI_STA);
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(mySSID);
WiFi.begin(mySSID, myPWD);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
// Start the server
server.begin();
Serial.println("Server started");
// Print the IP address
Serial.println(WiFi.localIP());
}
void loop() {
delay(1000);
float temp = Thermister(AnalogRead());
float temperatureF = (temp * 9.0 / 5.0) + 32.0;
Serial.print(temperatureF); Serial.println(" degrees F");
//Serial.print(Thermister(AnalogRead())); Serial.println(" degrees C");
WiFiClient client = server.available();
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connection: close"); // the connection will be closed after completion of the response
client.println("Refresh: 5"); // refresh the page automatically every 5 sec
client.println();
client.println("<!DOCTYPE html>");
client.println("<html xmlns='http://www.w3.org/1999/xhtml'>");
client.println("<head>\n<meta charset='UTF-8'>");
client.println("<title>F-HIVE Wifi Temp Sensor</title>");
client.println("<link href='https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css' rel='stylesheet'>");
client.println("</head>\n<body>");
client.println("<div class='container'>");
client.println("<div class='panel panel-default' margin:15px>");
client.println("<div class='panel-heading'>");
client.println("<H2>******** Wifi Temp Sensor</H2>");
client.println("<div class='panel-body' style='background-color: powderblue'>");
client.println("<pre>");
client.print("Temperature (°F) : ");
client.print(temperatureF);
client.print('\n');
//client.print("Temperature (°C) : ");
//client.println(temp, 2);
client.println("</pre>");
client.println("</div>");
client.println("</div>");
client.println("</div>");
client.print("</body>\n</html>");
// send to tsp every CYCLE seconds
if (++cycle_cnt > CYCLE) tsp(temperatureF);
}
int AnalogRead() {
int val = 0;
for (int i = 0; i < 20; i++) {
val += analogRead(A0);
delay(1);
}
val = val / 20;
return val;
}
double Thermister(int val) {
double V_NTC = (double)val / 1024;
double R_NTC = (Rs * V_NTC) / (Vcc - V_NTC);
R_NTC = log(R_NTC);
double Temp = 1 / (0.001129148 + (0.000234125 + (0.0000000876741 * R_NTC * R_NTC )) * R_NTC );
//Temp = Temp - 273.15;
Temp = Temp - 303.01;
return Temp;
}
boolean tsp(float tmp) {
// replace with your channel's thingspeak API key,
byte rept = 20;
while (!tsp_client.connect(tspSVR, 80) && --rept > 0) delay(50);
if (tsp_client.connected()) {
String payload = "&field1=";
payload += String(tmp, 2);
//
String postStr = "POST /update HTTP/1.1\n";
postStr += "Host: " + String(tspSVR) + "\n";
postStr += "Connection: close\n";
postStr += "X-THINGSPEAKAPIKEY: " + String(tspKEY) + "\n";
postStr += "Content-Type: application/x-www-form-urlencoded\n";
postStr += "Content-Length: " + String(payload.length()) + "\n";
postStr += "\n";
postStr += payload;
//
tsp_client.print(postStr);
//
// read status from tsp or discard status with client.flush();
while (tsp_client.connected()) postStr = tsp_client.readStringUntil('\n');
tsp_client.stop();
return true;
}
else {
return false;
}
}
it compiles ok, it's up to you to get it working .....
