If we do this the sensor reads without problems in the serial monitor
Code: Select all
const int soilSensor = 15;
int soilVal = 0;
void setup() {
Serial.begin(115200);
}
void loop()
{
soilVal = analogRead(soilSensor);
int soil = map(soilVal, 3350, 1500, 0, 100);
soil = constrain(soil, 0, 100);
Serial.print(soilVal);
Serial.print(">>>>>");
Serial.println(soil);
delay(2000);
}Code: Select all
#include <WiFi.h>
#include <WebServer.h>
#include <WiFiClient.h>
#include "DHT.h"
#define DHTPIN 4
#define DHTTYPE DHT11
const char* ssid = "Plant-O-Meter";
const char* password = "SHARKTANK2019";
const int soilSensor = 15;
int soilVal = 0;
IPAddress local_ip(192,168,1,1);
IPAddress gateway(192,168,1,1);
IPAddress subnet(255,255,255,0);
WebServer server(80);
DHT dht(DHTPIN, DHTTYPE);
void setup()
{
dht.begin();
Serial.begin(115200);
delay(100);
WiFi.mode(WIFI_AP);
server.begin();
WiFi.softAP(ssid,password);
WiFi.softAPConfig(local_ip, gateway, subnet);
server.on("/", handle_OnConnect);
delay(100);
}
void loop()
{
server.handleClient();
}
void handle_OnConnect()
{
float temp = dht.readTemperature(true);
float humid = dht.readHumidity();
soilVal = analogRead(soilSensor);
int soil = map(soilVal, 3350, 1500, 0, 100);
//soil = constrain(soil, 0, 100);
server.send(200, "text/html", SendHTML(temp,humid, soil));
}
void handle_NotFound(){server.send(404, "text/plain", "Not Found");}
String SendHTML(float temp, float humid, int soil)
{
String ptr = "<!DOCTYPE html> <html>\n";
ptr +="<head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0, user-scalable=no\">\n";
ptr +="<title>Plant-O-Meter </title>\n";
ptr +="<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}\n";
ptr +="body{margin-top: 50px;} h1 {color: #444444;margin: 50px auto 30px;}\n";
ptr +="p {font-size: 24px;color: #444444;margin-bottom: 10px;}\n";
ptr +="</style>\n";
ptr +="<script>\n";
ptr +="setInterval(loadDoc,250);\n";
ptr +="function loadDoc() {\n";
ptr +="var xhttp = new XMLHttpRequest();\n";
ptr +="xhttp.onreadystatechange = function() {\n";
ptr +="if (this.readyState == 4 && this.status == 200) {\n";
ptr +="document.body.innerHTML =this.responseText}\n";
ptr +="};\n";
ptr +="xhttp.open(\"GET\", \"/\", true);\n";
ptr +="xhttp.send();\n";
ptr +="}\n";
ptr +="</script>\n";
ptr +="</head>\n";
ptr +="<body>\n";
ptr +="<div id=\"webpage\">\n";
ptr +="<h1>Plant-O-Meter</h1>\n";
ptr +="<p>Temperature: ";
ptr +=temp;
ptr +="°F</p>";
ptr +="<p>Humidity: ";
ptr +=humid;
ptr +="%</p>";
ptr +="<p>Soil Moisture: ";
ptr +=soil;
ptr +="%</p>";
ptr +="</div>\n";
ptr +="</body>\n";
ptr +="</html>\n";
return ptr;
}Any help would be appreciated. I know there are probably 1000 different way to do this, but I would love it if we had to change as little code as possible, so far she understands how it all works, and she needs to be able to explain it in just a couple days.
