Looking for Battery Saver
Posted: Tue Jul 19, 2016 2:50 pmHey there,
currently i´m using this Setup:
ESP-01, DHT-11, LD1117V33, 3,7V Li-Po 2400mAh
Working Sketch:
Problem:
Battery empty after 6h.
Question:
Any Ideas what to do to get a better battery life?
I look forward to any advice! Thanks!
Greetings,
JerryESPN
currently i´m using this Setup:
ESP-01, DHT-11, LD1117V33, 3,7V Li-Po 2400mAh
Working Sketch:
Code: Select all
#include <DHT.h>
#include <ESP8266WiFi.h>
// replace with your channel’s thingspeak API key,
String apiKey = "[ThingSpeakAPIKey]";
const char* ssid = "[SSID]";
const char* password = "[password]";
const char* server = "api.thingspeak.com";
#define DHTPIN 2 // what pin we’re connected to
DHT dht(DHTPIN, DHT11,15);
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)) { // "184.106.153.149" or api.thingspeak.com
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 Celcius Humidity: ");
Serial.print(h);
Serial.println("% send to Thingspeak");
}
client.stop();
Serial.println("Waiting…");
// thingspeak needs minimum 15 sec delay between updates
delay(20000);
}
Problem:
Battery empty after 6h.
Question:
Any Ideas what to do to get a better battery life?
I look forward to any advice! Thanks!
Greetings,
JerryESPN