Hi Larry.
I don’t think the code you posted is the correct one.
Can you double-check what is the code that you are referring to?
Regards,
Sara

     This is what I put on my esp8266 , i may haver posted the wrong one when I was trying to cut and paste the code for the question. This is the code currently loaded on the device, between G and D2 I have a 10K resistor, also I have a jumper between the 3.3v and junction of the 10k to D2  to simulate a contact.
     So to reiterate , If I remove the jumper I get on the telegram door is open 11:47 am and door is closed at 11:47am. If I connect the jumper I get door is open at 11:48am and and door is closed at 11:48am,thanks

Start your code here

/*
Rui Santos
Complete project details at https://RandomNerdTutorials.com/esp8266-nodemcu-door-status-telegram/

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files.

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
*/
#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
#include <UniversalTelegramBot.h>
#include <ArduinoJson.h>
// Set GPIOs for LED and reedswitch
const int reedSwitch = 4;
const int led = 2; //optional
// Detects whenever the door changed state
bool changeState = false;
// Holds reedswitch state (1=opened, 0=close)
bool state;
String doorState;
// Auxiliary variables (it will only detect changes that are 1500 milliseconds apart)
unsigned long previousMillis = 0;
const long interval = 1500;
const char* ssid = “xxxxxxxxx”;
const char* password = “xxxxxxxxxxxx”;
// Initialize Telegram BOT
#define BOTtoken “xxxxxxxxxxxxxxxxxxxxxxxxxxxx” // your Bot Token (Get from Botfather)
// Use @myidbot to find out the chat ID of an individual or a group
// Also note that you need to click “start” on a bot before it can
// message you
#define CHAT_ID “xxxxxxxxxxxx”
X509List cert(TELEGRAM_CERTIFICATE_ROOT);
WiFiClientSecure client;
UniversalTelegramBot bot(BOTtoken, client);
// Runs whenever the reedswitch changes state
ICACHE_RAM_ATTR void changeDoorStatus() {
Serial.println(“State changed”);
changeState = true;
}
void setup() {
// Serial port for debugging purposes
Serial.begin(115200);
configTime(0, 0, “pool.ntp.org”); // get UTC time via NTP
client.setTrustAnchors(&cert); // Add root certificate for api.telegram.org
// Read the current door state
pinMode(reedSwitch, INPUT_PULLUP);
state = digitalRead(reedSwitch);
// Set LED state to match door state
pinMode(led, OUTPUT);
digitalWrite(led, state);

// Set the reedswitch pin as interrupt, assign interrupt function and set CHANGE mode
attachInterrupt(digitalPinToInterrupt(reedSwitch), changeDoorStatus, CHANGE);
// Connect to Wi-Fi
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(“.”);
}
Serial.println(“”);
Serial.println(“WiFi connected”);
bot.sendMessage(CHAT_ID, “Bot started up”, “”);
}
void loop() {
if (changeState){
unsigned long currentMillis = millis();
if(currentMillis – previousMillis >= interval) {
previousMillis = currentMillis;
// If a state has occured, invert the current door state
state = !state;
if(state) {
doorState = “closed”;
}
else{
doorState = “open”;
}
digitalWrite(led, state);
changeState = false;
Serial.println(state);
Serial.println(doorState);

//Send notification
bot.sendMessage(CHAT_ID, “The door is ” + doorState, “”);
}
}
}

Hi.
Can you increase the value of the interval variable to check if that makes any difference?
For example:

const long interval = 2000;

Regards,
Sara

Thanks, I will try that , kept thinking it was a bounce so by changing that value could work. 

Sara;
Tried changing value from 1500 to 2000, no change to the way it reports status.

Hi.
One of our readers mentioned the following in that project:
 
“From that moment it started to work but the switch generated many bounces. I modified the “delay” but little change. So I added a 2.2 microfarad capacitor parallel to the switch and now it’s OK.”
 
Tomorrow I can try to test that project again and try to understand what might be wrong with your setup.
 
Regards,
Sara

didn’t have a 2.2 cap so I paralleled 2 1uf caps and added this to the circuit across the resistor so resistor and 2 caps are in parallel. Still getting the same results, am I connecting this wrong?

Hi.
I just tested the project again to be sure it was working as expected.
Everything worked fine by following the tutorial as it is.
Maybe your sensor is different than mine?
I’m not sure what might be wrong on your side.
Regards,
Sara

Ok thanks, stumped here , using the right ESP Board  ESP -12E . Just using a jumper wire to simulate a contact so that should work. Thanks for trying, just thought that something it off because I have read others had similar issues.

Hi.
You mentioned the jumper wire.
I tested right now with a jumper wire and everything works as expected too.
Have you tried using another GPIO?
Regards,
Sara

For some reason after I went from D2 to D3 , downloaded the program and it does indeed work. Curiosity got me so I went back to original sketch after powering down , and it now works. Don’t quite understand it , maybe after power cycling it , it reset and now works as you said. Possibly it didn’t download correctly , something I really should have tried. Also found an electrolytic 2.2 cap and paralleled to the 10K resistor , all is working now,thanks again.

I also tried this on a Model Doiting ESP -12F and it works just fine . Thanks again for all the help Sara

Great!
I’m glad you solved the issue.
I’ll mark this issue as resolved.
If you need further help, you just need to open a new question in our forum.
Regards,
Sara

Thanks