Five module limit?

6 years 3 months ago #1875 by Sunspot
Five module limit? was created by Sunspot
I have combined the 4 relay sketch and the humidity temperature sketch as a test for later adding lots of I2C devices.
There seems to be a 5 module limit for one node.

with this code -
//  Serial.println("present S_HUM");
  esp.present(CHILD_ID_HUM, S_HUM);

//  Serial.println("present S_TEMP");
  esp.present(CHILD_ID_TEMP, S_TEMP);

          esp.present(1, S_DIGITAL_OUTPUT);
          esp.present(2, S_DIGITAL_OUTPUT);
          esp.present(3, S_DIGITAL_OUTPUT);
          esp.present(4, S_DIGITAL_OUTPUT);

The 5th present, Relay 4, does not create a module
When I put the H and T after the relays then the last module, Temperature, was ignored. In each case just 5 modules.

With the code above I can see the H and T and control 3 of the 4 relays perfectly.

The full sketch is
/*
 V2.0 - small fix
 
 Created by Igor Jarc <admin@iot-playground.com>
 See http://iot-playground.com for details
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
 version 2 as published by the Free Software Foundation.
 */
#include <Esp8266EasyIoT.h>
#include <SoftwareSerial.h> 
#include <DHT.h>  

#define CHILD_ID_HUM 0
#define CHILD_ID_TEMP 1
#define HUMIDITY_SENSOR_DIGITAL_PIN 2

#define SEND_INTERVAL  1000 * 30 // 30S  

        #define RELAY_1  6  // Arduino Digital I/O pin number for first relay (second on pin+1 etc)
        #define RELAY_ON 1  // GPIO value to write to turn on attached relay
        #define RELAY_OFF 0 // GPIO value to write to turn off attached relay

Esp8266EasyIoT esp; 

SoftwareSerial serialEsp(10, 11);


DHT dht;
float lastTemp;
float lastHum;

Esp8266EasyIoTMsg msgHum(CHILD_ID_HUM, V_HUM);
Esp8266EasyIoTMsg msgTemp(CHILD_ID_TEMP, V_TEMP);

unsigned long startTime;

void setup()
{
  serialEsp.begin(9600);
  Serial.begin(115200);  

  Serial.println("EasyIoTEsp init");

  //esp.begin(NULL, 3, &serialEsp, &Serial);
         esp.begin(incomingMessage, 3, &serialEsp, &Serial);

        
  //esp.begin(NULL, &serialEsp);
  dht.setup(HUMIDITY_SENSOR_DIGITAL_PIN); 

  pinMode(13, OUTPUT);

          pinMode(RELAY_1, OUTPUT);
          pinMode(RELAY_1 + 1, OUTPUT);
          pinMode(RELAY_1 + 2, OUTPUT);
          pinMode(RELAY_1 + 3, OUTPUT);

          
//  Serial.println("present S_HUM");
  esp.present(CHILD_ID_HUM, S_HUM);

//  Serial.println("present S_TEMP");
  esp.present(CHILD_ID_TEMP, S_TEMP);

          esp.present(1, S_DIGITAL_OUTPUT);
          esp.present(2, S_DIGITAL_OUTPUT);
          esp.present(3, S_DIGITAL_OUTPUT);
          esp.present(4, S_DIGITAL_OUTPUT);

  startTime = millis()+SEND_INTERVAL;
}

void loop()
{  
            esp.process(); 
  while(!esp.process());

  if (IsTimeout())
  {
    startTime = millis();

    float temperature = dht.getTemperature();
    if (isnan(temperature)) {
      Serial.println("Failed reading temperature from DHT");
    } 
    else if (temperature != lastTemp) 
    {
      lastTemp = temperature;
      esp.send(msgTemp.set(temperature, 1));
      Serial.print("T: ");
      Serial.println(temperature);
    }
  
    while(!esp.process());
  
    float humidity = dht.getHumidity();
    if (isnan(humidity)) {
      Serial.println("Failed reading humidity from DHT");
    } 
    else if (humidity != lastHum) 
    {
      lastHum = humidity;
      esp.send(msgHum.set(humidity, 1));
      Serial.print("H: ");
      Serial.println(humidity);
    }
  }
}

boolean IsTimeout()
{
  unsigned long now = millis();
  if (startTime <= now)
  {
    if ( (unsigned long)(now - startTime )  < SEND_INTERVAL ) 
      return false;
  }
  else
  {
    if ( (unsigned long)(startTime - now) < SEND_INTERVAL ) 
      return false;
  }

  return true;
}

// below from 4 relays
void incomingMessage(const Esp8266EasyIoTMsg &message) {
  // We only expect one type of message from controller. But we better check anyway.

  Serial.println("New message");
  if (message.type==V_DIGITAL_VALUE) {
    // Change relay state
    digitalWrite(message.sensor-1+RELAY_1, message.getBool()?RELAY_ON:RELAY_OFF);

    Serial.print("Incoming change for sensor:");
    Serial.print(message.sensor);
    Serial.print(", New status: ");
    Serial.println(message.getBool());
  } 
}

Should I RTFM? (where please?)

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6 years 3 months ago - 6 years 3 months ago #1889 by Sunspot
Replied by Sunspot on topic Five module limit?
Surely someone has got more than 5 nodes on a single ESP/Arduino sketch !?

The cheap Chinese 8 relay board would do a great job

Knock Knock . . . .

(and with I2C on an ESP-01 you could get 20 or more sensors/controllers)

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6 years 3 months ago #1890 by Sunspot
Replied by Sunspot on topic Five module limit?
I added 2 more relays making 6 and there is also one temperature and one humidity node.
8 nodes in all.

I moved the ESP etc close to the WiFi modem - a "5 bar" signal

After 4 or 5 30 second tries to find the settings it got just 2 and ignored 6.
I tried again for several 30 second waits and it eventually got 7 of the 8 (one relay ignored).

It does seem very hit and miss with more than a few nodes in one sketch.

Might it be possible to add the node by hand somehow?
Perhaps also with a fixed IP address for the ESP?

Does anyone else share this experience - it dampens my initial enthusiasm a bit :(

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6 years 3 months ago #1891 by Sunspot
Replied by Sunspot on topic Five module limit?
I assume the node details found by the automatic scan are stored in the Pi somewhere?
(then perhaps I can tweak the data to add the missing relays?)

I am looking with ftp as root but can't see where the nodes are stored.

(I cant even see the index.html - usually in /var/www/???)

I would love to understand the web page creation process!
Is there any documentation?

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6 years 3 months ago #1905 by EasyIoT
Replied by EasyIoT on topic Five module limit?

Sunspot wrote: I assume the node details found by the automatic scan are stored in the Pi somewhere?
(then perhaps I can tweak the data to add the missing relays?)

I am looking with ftp as root but can't see where the nodes are stored.

(I cant even see the index.html - usually in /var/www/???)

I would love to understand the web page creation process!
Is there any documentation?


Configuration is in config folder under easyiot. Web pages are build dynamically.

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6 years 3 months ago - 6 years 3 months ago #1927 by piman
Replied by piman on topic Five module limit?
Has anyone come up with an answer for More then five nodes?

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