LCD Clock and Text sensor node with new V_TEXT

[TheoL]

@AWI Thank you for your reply. I have thought about it a bit on my way home from work. When My guests will be leaving again - the weekend after this weekend - I'll start with a simple scene controller for Domoticz. It'll be an easy play ground for the v_text, just an arduino sketch which you and @GizMoCuz already made and some simple bash and lua scripts. Shouldn't take long.

When that works I'll start the proof of concept for sending valid RFID codes over MySensors to an RFID reader node. I ordered an RFID reader yesterday which was really cheap, about 5 dollar. So not sure if it'll work great.

My plan is to use an RFID reader as an replacement for the numeric keypad for turning on/off the alarm. I figured that RFID will be easier to use and remember than a pin code.

In the beginning I will store my valid RFID codes in an file on the filesystem of Domoticz. But maybe in the future I'll create a Node js application with a decent database for that. It's not very wise to store delegate keys like that not encrypted or decoded in a file on a fs.

[TheoL]

@AWI I'm trying to register the sensor to domoticz. Here's the report in the serial monitor

send: 7-7-0-0 s=255,c=0,t=17,pt=0,l=3,sg=0,st=ok:1.5
send: 7-7-0-0 s=255,c=3,t=6,pt=1,l=1,sg=0,st=ok:0
read: 0-0-7 s=255,c=3,t=6,pt=0,l=1,sg=0:M
sensor started, id=7, parent=0, distance=1
send: 7-7-0-0 s=255,c=3,t=11,pt=0,l=16,sg=0,st=ok:Domotica Monitor
send: 7-7-0-0 s=255,c=3,t=12,pt=0,l=3,sg=0,st=ok:1.0
send: 7-7-0-0 s=0,c=0,t=36,pt=0,l=10,sg=0,st=ok:Databridge
send: 7-7-0-0 s=0,c=1,t=47,pt=0,l=1,sg=0,st=ok:-
send: 7-7-0-0 s=255,c=3,t=1,pt=0,l=0,sg=0,st=ok:

But I can't see the sensor in Domoticz - it's update to the latest stable release. I'm trying to get this to work with a Nokia 5110 LCD display. This sketch will tell me the date/time and outside and inside weather conditions. Did I miss something? Here's the sketch.

/**
 * Room condition display. 
 *
 * This sketch is the Prototype Sketch for testing if we can combine a Nokia 5110 LCD display and MySensors.
 * The goal we're trying to achieve is to use the Nokia 5110 as a display for showing sensor values like:
 * - the current date and time (if we've some I2C pins left we'll hook up an I2C RTC)
 * - the current room temperature
 * - the current room hummidity
 * - the barometric pressure
 * - the outside temperature
 * - etc
 **/

#include <SPI.h>
#include <Adafruit_GFX.h>
#include <Adafruit_PCD8544.h>
#include <MySensor.h> // Mysensor network
#include <Time.h>

#define TEXT_NODE_CHILD_ID 0
#define NODE_ID 7 // use a static nodeID for this sensor.

// 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;

// Software SPI (slower updates, more flexible pin options):
// pin 7 - Serial clock out (SCLK)
// pin 6 - Serial data out (DIN)
// pin 5 - Data/Command select (D/C)
// pin 4 - LCD chip select (CS)
// pin 3 - LCD reset (RST)
Adafruit_PCD8544 display = Adafruit_PCD8544(7, 6, 5, 4, 3);

MySensor gw;

// Initialize messages for sensor network
MyMessage textMsg( 0, V_TEXT );

boolean timeReceived = false ;

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

  // initialize 5110 LCD
  display.begin();
  
  // initialize MySensor communication
  gw.begin(incomingMessage, NODE_ID);
  //Send the sensor node sketch version information to the gateway
  gw.sendSketchInfo("Domotica Monitor", "1.0");
  gw.present(TEXT_NODE_CHILD_ID, S_INFO, "Databridge"); 
  gw.send(textMsg.setSensor(TEXT_NODE_CHILD_ID).set("-"));
 
  // Initializations
  gw.requestTime(receiveTime);     
  
  // you can change the contrast around to adapt the display
  // for the best viewing!
  display.setContrast(50);

  displayDateAndTime();
}

void displayDateAndTime() {
  display.clearDisplay();
  // text display tests
  display.setTextSize(1);
  // display.setTextColor( WHITE, BLACK ); // 'inverted' text
  display.setTextColor( BLACK ); // 'inverted' text
  display.setCursor(0,0);
  display.println("Zo 20-09-2015");
  display.setTextColor( BLACK ); // 'inverted' text
  display.setTextSize(2);
  display.setCursor(10,18);
  display.println("10:43");
  display.display();
  delay(2000);
}

void loop() {
 // do nothing yet
}

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

// This is called when a message is received 
void incomingMessage(const MyMessage &message) {
  if (message.type==V_TEXT) { 
    // Write some debug info
    Serial.print("Message: "); Serial.print(message.sensor); Serial.print(", Message: "); Serial.println(message.getString());
  } 
}

[AWI]

@TheoL You should use the latest Domoticz beta release. It is a very new (beta) feature. Domoticz can (at the moment) not recognize the S_INFO but will create the sensor when a V_TEXT is sent.

[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);
}