LCD Clock and Text sensor node with new V_TEXT

[TheoL]

@AWI Thanx for your quick reply. I'm able to add the sensor node to Domoticz. When I use the JSON url I get an Update OK from Domotoicz. But I can't see an incomming message. I added gw.process() to the main loop. Do I need to update the MySensors gateway as well?

[hek]

No, the gateway will forward anything you throw at it.

[AWI]

@TheoL the sketch polls the controller every x seconds. So it should send the update everytime. What value does the text sensor have in the 'device" listing?

[TheoL]

@hek Thanks you for claryfying that. @AWI I'll adjust the code tomorrow. The device doesn't have a value in Domoticz. But it's getting a bit to late at the moment. ;)

[TheoL]

I've gotten it to work. But the version of Domoticz I installed was very unstable. It caused the GUI to stall. At the end I had to burn a new installation on a SD card and had to setup everything from scratch. I have no spare Pi at the moment so I have to postpone this project for a while.

It's a pitty 'cause I was really looking forward to this project.

[user1306]

this is a great project thank you.
just a quick question is there a way to be able to turn on and off the backlight with text received from domoticz?
for example if i just send "1" then the back light goes on and "0" for off.

thanks

[AWI]

@user1306 you can do anything with the text sent but be aware that this would imply you are making your own (non standard MySensors) protocol. V_TEXT is intended only for information.
I am the 'misusing' it myself but only where there is no MySensors solution.

[user1306]

@AWI
thank you for the info, i'm a bit new to arduino and my sensors, so i'm not really sure how to do that.
if possible could you let me know what piece of code i need to be able to do that?

thanks

[AWI]

@user1306 This is a part from the routine where I read three values from a V_TEXT value (renamed to V_ORIENTATION) separated by a ";". (I think V_ORIENTATION would be a good addition for MySensors ;-) in addition to V_POSITION but I haven't suggested it officially yet)

Also be aware that Domoticz only sends the V_TEXT after it has been requested. So you need to send a request(sensor_id, V_TEXT)first .

#define V_ORIENTATION V_TEXT								// Own (not existing in MySensors protocol) type for orientation (payload = Pitch ; Roll ; Yaw in degrees)
#define S_ORIENTATION S_INFO								// Yaw = 0 (north)to 360) ; Horizontal = 0 ; 

			if (message.type==V_ORIENTATION) {
				char payload[12] ;								// temporary buffer
				strcpy(payload, message.getString());			// read and copy payload
				Yaw = atoi(strtok(payload, ";"));				// get variables from payload (; seperated int)
				Pitch = atoi(strtok(NULL, ";"));
				Roll = atoi(strtok(NULL, ";"));
				attachServos(true) ;							// power up servo's
				servoH.write(map(-constrain(Yaw, -90, 90),-90, 90, 0, 180));		// servo middle 90 deg == 0 deg Yaw 
				servoV.write(map(Pitch, -90, 90, 0, 180));
				}

[AWI]

On special request of @pepov attached a piece of LUA script for Domoticz. This demonstrates how to fill V_TEXT devices from other values so that thes can be displayed on the Text sensor node.

This special example demonstrates how to fill V_TEXT with weather data from a virtual device connected to Weather Underground. Please search the Domoticz wiki for more information on this special service.

-- script to read the virtual Weatherstation (Weather Underground) service and send it to "V_TEXT" MySensors devices
-- Weather Underground values are in 'WUWeer' and 'WUWind'

commandArray = {} ;
--Weatherstation data:
sWeatherTemp, sWeatherHumidity, sWeatherUV, sWeatherPressure, sWeatherUV2 = otherdevices_svalues['WUWeer']:match("([^;]+);([^;]+);([^;]+);([^;]+);([^;]+)") ;
sWeatherTemp = tonumber(sWeatherTemp);
sWeatherHumidity = tonumber(sWeatherHumidity);
sWeatherUV = tonumber(sWeatherUV);
sWeatherPressure = tonumber(sWeatherPressure);
sWeatherUV2 = tonumber(sWeatherUV2);
-- print to log 
print("Weather station: Temperature is " .. sWeatherTemp .. " ");
print("Weather station: Humidity is " .. sWeatherHumidity .. " ");
print("Weather station: UV is " .. sWeatherUV .. " ");
print("Weather station: Pressure is " .. sWeatherPressure .. " ");
print("Weather station: UV2 is " .. sWeatherUV2 .. " ");
 
------------------------------------------------------------------------
 
--Windmeter data:
sWindDirectionDegrees, sWindDirection, sWindSpeed, sWindGust, sWindTemperature, sWindFeel = otherdevices_svalues['WUWind']:match("([^;]+);([^;]+);([^;]+);([^;]+);([^;]+);([^;]+)") ;
 
sWindDirectionDegrees = tonumber(sWindDirectionDegrees);
sWindDirection = (sWindDirection);
sWindSpeed = tonumber(sWindSpeed);
sWindGust = tonumber(sWindGust);
sWindTemperature = tonumber(sWindTemperature);
sWindFeel = tonumber(sWindFeel);
 
print("Windmeter: Winddirection (in degrees) is: " .. sWindDirectionDegrees .. " ");
print("Windmeter: Winddirection is: " .. sWindDirection .. " ");
print("Windmeter: Windspeed is: " .. sWindSpeed .. " ");
print("Windmeter: Windgust is: " .. sWindGust .. " ");
print("Windmeter: Windtemperature is: " .. sWindTemperature .. " ");
print("Windmeter: Windfeel is: " .. sWindFeel .. " ");

-- device numbers 725/ 873 and 872 are V_TEXT  
commandArray[1] = {['UpdateDevice'] = string.format ("725|0|out %4.1f\01 %2d\07 %4d\02\03  ", sWeatherTemp, sWeatherHumidity, sWeatherPressure)}
commandArray[2] = {['UpdateDevice'] = string.format ("873|0|%2.1f:%3d:%4.1f", sWeatherTemp, sWeatherHumidity, sWeatherPressure)}
commandArray[3] = {['UpdateDevice'] = string.format ("872|0|%3d:%4.1f:%4.1f:%4.1f:%4.1f", sWindDirectionDegrees, sWindSpeed/10 , sWindGust/10, sWindTemperature, sWindFeel)}


return commandArray

[pepov]

@AWI said:

evices from other values so that thes can be displayed on the Text sensor node.

This special example demonstrates how to fill V_TEXT with weather data from a virtual device connected to Weather Underground. Please search the Domoticz wiki for more informati

Wow Thanks AWI!!!!

[NiklasO]

Does this work with MySensors 2.0? If someone has this running on 2.0, please share the code. :)

[Marc-Olivier Chaubet]

Hi,
i try to send message but nothing change on LcdDisplay.

I d'ont undestant what is wrong.

Can you help me pls.

send: 49-49-20-0 s=8,c=2,t=47,pt=0,l=0,sg=0,st=ok:
send: 49-49-20-0 s=9,c=2,t=47,pt=0,l=0,sg=0,st=ok:
read: 0-20-49 s=9,c=1,t=16,pt=0,l=4,sg=0:test
send: 49-49-20-0 s=9,c=1,t=16,pt=0,l=4,sg=0,st=ok:test
send: 49-49-20-0 s=8,c=2,t=47,pt=0,l=0,sg=0,st=ok:

[Qu3Uk]

@NiklasO I have something similar running on MYS 2.0 and can paste the code. I'm using a 4x1 display and using V_VAR-1-4 to send each line over.
If that's useful to you I can post it.

[NiklasO]

@Qu3Uk said:

@NiklasO I have something similar running on MYS 2.0 and can paste the code. I'm using a 4x1 display and using V_VAR-1-4 to send each line over.
If that's useful to you I can post it.

Yes please. I ported to 2.0 late yesterday and it works ok. I have 4 lines, 20 chars.

[AWI]

@Marc-Olivier-Chaubet Can you post a little more information (the sketch)?

The text seems to be arriving at the node. So first check if the information comes in on serial (Serial.print(....)).
And next: is your display working? just print something it in the local sketch.

[Qu3Uk]

@NiklasO

Here is it.

// Enable debug prints to serial monitor
//#define MY_DEBUG

//#define MY_NODE_ID 200
#define MY_SENSOR_ID 1

// Enable and select radio type attached
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69

// Enable repeater functionality for this node
#define MY_REPEATER_FEATURE

// LCD includes
#include <Wire.h> 
#include <LiquidCrystal_I2C.h>

// MYS includes
#include <SPI.h>
#include <MySensors.h>

#define LCD_ON 1  // GPIO value to write to turn on attached relay
#define LCD_OFF 0 // GPIO value to write to turn off attached relay

LiquidCrystal_I2C lcd(0x3f, 20, 4); //0x3f is the LCD address.
String LINE_BLANK = "                    ";

void before() {
}

void setup() {
  // Set off  LCD module
  lcd.begin (); 
  lcd.backlight();

  lcd.setCursor(0, 0); //
  lcd.print("Ready!"); // We expect the controller to remove this from display.
}

void presentation()
{
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo("LCD Display", "1.0");

  present(MY_SENSOR_ID, S_INFO);
}


void loop()
{
  // extra processing if required.
}

void receive(const MyMessage &message) {
  // We only expect one type of message from controller. But we better check anyway.
  if (message.type == V_STATUS) {
    // Use V_STATUS to turn on/off the LCD display
    // if supported by LCD.
  }

  // temp string, probably don't need this.
  if (message.type == V_VAR1) {
    writeScreen(0, message.data);
  }

  if (message.type == V_VAR2) {
    writeScreen(1, message.data);
  }

  if (message.type == V_VAR3) {
    writeScreen(2, message.data);
  }

  if (message.type == V_VAR4) {
    writeScreen(3, message.data);
  }
}

void writeScreen(int line, String text)
{
  // Trim whitespace from incoming text.
  text.trim();

  // Remove anything over 20 char in text.
  if(text.length() > 19)
  {
      text.remove(20);
  }
  
  // Clear the line
  lcd.setCursor(0, line);
  lcd.print(LINE_BLANK);

  // Set Line
  lcd.setCursor(0, line);
  lcd.print(text);
}

[Marc-Olivier Chaubet]

Hi AWI,
Yes my display is working, i can see the date and "Line 1 - First....."

I think what i send is not correct....0_o
This is from the serial monitor

read: 0-20-49 s=9,c=1,t=16,pt=0,l=4,sg=0:test

Should it be something like this

read: 0-20-49 s=9,c=1,t=16,pt=0,l=4,sg=0:Line1=test

this is the sketch.

/*
 PROJECT: MySensors / LCD display for text from controller
 PROGRAMMER: AWI
 DATE: september 8, 2015/ last update: september 8, 2015
 FILE: AWI_LCD_49.ino
 LICENSE: Public domain

 Hardware: tbd ..MYS Ceech - ATmega328p board w/ NRF24l01
    and MySensors 1.5 ()
        
Special:
    MySensors - Development (as of sept 2015)
    
SUMMARY:
    display time & 2 lines of text from Controller Text sensors
*/

#include <MyMessage.h>
#include <MySensor.h>                       // Mysensor network
#include <SPI.h>
#include <LiquidCrystal_I2C.h>
#include <Time.h>                           //http://playground.arduino.cc/Code/Time
#include <Wire.h>                           

// uncomment if you are using the DEVELOPMENT version with V_TEXT & V_INFO defined (better to use development MyMessage.h)
const byte V_TEXT = 47 ;                  // values taken from development edition MyMessage.h
const byte S_INFO = 36 ;

const byte nodeId = 49 ;                    // MySensors fixed node id
const byte LCD1_CHILD = 8 ;                 // LCD line 1
const byte LCD2_CHILD = 9 ;                 // LCD line 2

char lastLCD1[21] = "Line1 - first   ";     // define & init before first receive
char lastLCD2[21] = "Line2 - second  ";

boolean timeReceived = false ;
// timers for loop delays
unsigned long lastUpdate=0, lastRequest=0, lastDisplay=0;
int display_no = 0 ;                        // current display

// *** Definition and initialisation
// define the MySensor network
MyTransportNRF24 transport(9,10);           // Sensoduino (8,7) Ceech board, 3.3v (7,8)  (pin default 9,10)
MySensor gw(transport);  

// Initialize messages for sensor network
MyMessage textMsg(0, V_TEXT);
//                    addr, en,rw,rs,d4,d5,d6,d7,bl,blpol
LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);  // Set the LCD I2C address

// OPTIONAL: Custom characters for display - Units)
byte heart[8] = { B00000, B01010, B11111, B11111, B01110, B00100, B00000, B00000};

void setup(void){
    //Serial in Sensor network = 115200
    gw.begin(incomingMessage, nodeId);                  // this node is 49 fixed 
    //Send the sensor node sketch version information to the gateway
    gw.sendSketchInfo("AWI_LCD text 49", "1.1");
    gw.present(LCD1_CHILD, S_INFO, "LCD_line1");        // new S_type 20150905 (not know by domoticz)
    gw.present(LCD2_CHILD, S_INFO, "LCD_line2");
    gw.send(textMsg.setSensor(LCD1_CHILD).set("-"));    // initialize the V_TEXT at controller for sensor to none (trick for Domoticz)
    gw.send(textMsg.setSensor(LCD2_CHILD).set("-"));        

    // Initializations
    gw.requestTime(receiveTime);                        // get the time from controller (handled by receiveTime)
    
    // ** LCD display **
    Wire.begin();                                       // I2C
    lcd.begin(16, 2);                                   // LCD 2 lines * 16 char.
    lcd.setBacklight(HIGH);
    lcd.setCursor(0, 0);
    lcd.createChar(1, heart);

    // lcd.write(byte(0)); // write units
}

void loop(void){
    // timer for loop delays
    unsigned long now = millis();
    gw.process() ;
    // If no time has been received yet, request it every 10 second from controller
    // When time has been received, request update every hour
    if ((!timeReceived && (now-lastRequest > 10*1000)) ||   
        (now-lastRequest > 3600000UL)){                 // request update every hour to keep in sync
       // Request time from controller. 
       Serial.println("requesting time");
       timeReceived = false;
       gw.requestTime(receiveTime);  
       lastRequest = now;
        }
    // Change display and update sensors every 5 seconds (default = 5000)
    if (now-lastDisplay > 5000){
        lastDisplay = now;
        gw.request(LCD1_CHILD, V_TEXT, 0);                  // request new values from controller
        gw.request(LCD2_CHILD, V_TEXT, 0);                ;// request new values from controller
        // change display 
        display_no++;
            if (display_no >= 2){ // wrap for number of different displays for second line
            display_no = 0;
            }
        }
    // Update display every second
    if (now-lastUpdate > 1000) {
        LCD_local_display();
        lastUpdate = now;
        }
    }

// This is called when a new time value was received
void receiveTime(unsigned long controllerTime) {
    Serial.print("Time value received: ");
    Serial.println(controllerTime);
    setTime(controllerTime);                            // time from controller
    timeReceived = true;
    }

// This is called when a message is received 
void incomingMessage(const MyMessage &message) {
    if (message.type==V_TEXT) {                         // Text messages only
     // Write some debug info
     Serial.print("Message: "); Serial.print(message.sensor); Serial.print(", Message: "); Serial.println(message.getString());
    if (message.sensor == LCD1_CHILD ) {
        snprintf(lastLCD1, sizeof(lastLCD1), "%16s", message.getString());  // load text into LCD string
        }
    else if (message.sensor == LCD2_CHILD){
        snprintf(lastLCD2, sizeof(lastLCD2), "%16s", message.getString());
        }
    } 
}

void LCD_local_display(void){
// take car of LCD display information
    char buf[17]; // temp buffer for max 16 char display
    // start with location & time on first line
    snprintf(buf, sizeof buf, "%02d:%02d:%02d %02d-%02d", hour(), minute(), second(), day(), month());
    lcd.setCursor(0, 0);
    lcd.print(buf);
    lcd.setCursor(0, 1);
    if (display_no == 0){
      lcd.print(lastLCD1);                          // second line is text value from controller
    } else {                                        // display == 2
      lcd.print(lastLCD2);
    }
}

Thxs

[AWI]

@Marc-Olivier-Chaubet You should be receiving the TEXT value coming from the controller. Is node showing other information on serial?

// This is called when a message is received 
void incomingMessage(const MyMessage &message) {
     // Write some debug info
     Serial.print("Message: "); Serial.print(message.sensor); Serial.print(", Message: "); Serial.println(message.getString());
    if (message.type==V_TEXT) {                         // Text messages only
     // Write some debug info
     Serial.print("Text Message: "); Serial.print(message.sensor); Serial.print(", Message: "); Serial.println(message.getString());
    if (message.sensor == LCD1_CHILD ) {
        snprintf(lastLCD1, sizeof(lastLCD1), "%16s", message.getString());  // load text into LCD string
        }
    else if (message.sensor == LCD2_CHILD){
        snprintf(lastLCD2, sizeof(lastLCD2), "%16s", message.getString());
        }
    } 
}

In incomingmessage routing add a print statement to show which messages are coming in (see above).

[Marc-Olivier Chaubet]

Hi,
I've change this line with "!=" and it work. but i dont undestand why....?

void incomingMessage(const MyMessage &message) {
    if (message.type!=V_TEXT) {                         // Text messages only