implementing multiple sensors

marceltrapman

@hek said:

Motion + Light (LDR or Photo resistor) + DHT (Temp+Humidity)

+1 for that combo :)

andyuno

I think this is a good basis to start. A standard set of multi-senses based on temperature, humidity, light and movement which I think would be useful in all applications

clippermiami

@marceltrapman I'll second that :) I'm working on combining the Light-DHT but I'd really like to get the complete set going.

BulldogLowell

What would be interesting is to make the multi-sensor sketch so that if we ran it either powered or on battery it would adjust its behaviour accordingly. Something like the AEON 4-in-1.

When you are on battery, it is all about conserving that power source, and while on mains, it is all about consistency of data updates and possibly adding other functionality.

Plus, I wanted to work on that LED idea so that we can broadcast a 'message' to a grouping of sensors and activate an (RGB) LED in the sensor.

Too much?

marceltrapman

@BulldogLowell Good idea. Dunno if it is possible to recognise if it is battery powered or not.
But this is the way to go imho.
I think it is not a question of 'too much' but more 'is this even possible'?

egbertje

@hek said:

A common multi-sensors-combination is:

Motion + Light (LDR or Photo resistor) + DHT (Temp+Humidity)

I would prefer if the example sleeps Arduino+radio while doing nothing.

+1 for me !

hek

You could probably have a #define or flag telling if sensor should be running on battery.

clippermiami

I merged the Temp/Humidity and Light sensor functions into already included sensor on Vera. Apparently the Gateway will not recognize such a change made inline. The Serial Monitor showed the Light value being reported but it was never displayed on Vera. I tried running the Inclusion function but it never showed the Light sensor in the Node.

Knowing the way Vera works, this doesn't really surprise me all that much. I'm guessing that in order to make this work one has to ClearEEPROM on the Sensor, remove the Node from Vera, upload the revised sketch to the Sensor and go through the Inclusion again, essentially starting from scratch.

clippermiami

@clippermiami

Re: This posting about merging sensors.

I did exactly as I said in there:

Removed the Node and Children from Vera. At this point I have only the MySensors Plugin visible in Vera
Cleared EEPROM on the Sensor
Uploaded the new sketch to the Sensor
Ran Inclusion on Vera

When inclusion ran it found 4 new devices (I assume Node, Temp, Hum, Light)

But Vera does NOT display the new devices even after multiple restarts. The Serial Monitor on the Sensor shows that it is indeed sending data and receiving ACK OK from the Gateway. Subsequent attempts at Inclusion do not find any devices so the GW at least knows they are there.

Looking at the SysLog there is no sensor data being reported since I started this so apparently it isn't getting through.

I'm going to Clear EEPROM again and fallback to the Temp/Hum sensor in case there is a problem with the new sensor code.

Well, that's interesting. After reverting to he 2 sensor node Inclusion found 3 new devices and Vera now displays them. Yet when the 3 sensor code was running the serial monitor showed transmission and ACK for all three sensors. Now I'm confused.

[UPDATE]
I sorted it out, i had several problems.

It appears the it is necessary to RESET the Node prior to Inclusion. Vera will then find the devices and display them. Absent the Reset it looks like Vera found them but that was all.
When it finally displayed the LIGHT, it was showing as an ON/OFF Switch not a level. In the Setup routine i had
gw.sendSensorPresentation(CHILD_ID_LIGHT, S_LIGHT);
rather than
gw.sendSensorPresentation(CHILD_ID_LIGHT, S_LIGHT_LEVEL);
and similarly in the sending of the data I had left off the "_LEVEL" not realizing that that told the GW how to display the device. Now I know :)

Anyway, the three input sensor is working. In the process of making the conversion I changed the Light Level to a floating number for consistency on the display .I've also implemented a simple Keepalive; every "N" times through the loop it resends the last temperature reading. i have this set to 30 times (and I adjusted the basic data cycle from 30 seconds to 60 seconds) so the keep alive occurs every 30 minutes whether the sensor sends any data in that time or not.

egbertje

Somebody has good result in a working multisensor and wants to share his code?

lininger

I have been working on one that combines a servo, temperature and light sensor. I have had it running for a while now. I have been busy lately and have not really had time to write it up and post it. I am attaching what I have, maybe it would help or give some ideas.
[Servo-Light-Temp-Sensors.zip](uploading 100%)

wannabee

Probably not the easiest to look at since it combined a RGB diode and RFID reader. But it works very well.
https://github.com/wbcode/ham/blob/master/arduino/MySensorRFIDandRGB/RGBandRFID/RGBandRFID.ino

I should add that I don't use the Vera as a controler.

WB

lininger

.zip did not take here are the files

Servo-Light-Temp-Sensors.ino

gregl

If i was a programmer... i would write a wizard app/script/webpage that would ask a user a bunch of questions..

What Arduino are they using.
what sensors/actuators they want to have on their sketch
what pins ( showing those available) are they going to connect the sensor to.
What they want to call the sketch
Relay mode?
Sampling times

etc etc

if i was a really good programmer, i would produce a schematic/frizing like above ;-)

Unfortunately in not a programmer..really wish i was, and am trying to get there slowly...so if you guys are cool with waiting another 5 years ill get something together...

hek

We've actually thought about doing a sketch-generator also. It's down there on the list. And it would be a web-thing (hopefully with OTA update) :)

gregl

@hek Phew... cause you are a great programmer!!!

OTA!!.... now your showing off ;-)

lininger

A few people have asked about the hardware I used.

A quick write up on what hardware I used for the blinds-light-temp-servo project.

My binds are 1” not the 2” that you see in the projects listed in the forums. The standard servos will not fit inside the 1” blinds, so I had to use the mini servos. My concern was that the mini servos would not have the torque necessary to operate the tilt mechanism. But for at least the 45x38 blinds I have the mini servo worked great, not sure about larger size blinds.

I removed the tilt wand and mechanism completely and connected the servo directly to the hex rod. I used a piece of 2” foam insulation and cut out a cavity for the servo and used it as the mounting bracket.

I purchased a Nano IO shield from imall.iteadstudio.com, which I plan to use when I assemble the parts into a final enclosure and mount it inside the cabinet. With the Light and Temp sensors mounted inside the window frame.

I use PLEG to control the blinds.

Parts used:

http://www.ebay.com/itm/291084936296?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 – used to connect the servo to the hex rod. Note I had to cut off some of the hex rod so the servo would sit inside the head rail.

http://www.ebay.com/itm/SG90-Tower-Pro-mini-servo-Universal-S-type-connector-4-0-to-6-0-volts-/261184708931?pt=Model_Kit_US&hash=item3ccfd26143

I tried to upload a 5 second video of the binds in operation, but the file is too large.
Test Wiring.jpg

hek

Cool! Just upload the video to youtube and post the link here (it will be embedded automatically).

lininger

Two short videos

During development
In production

http://tinypic.com/r/2dcfn9w/8
http://tinypic.com/r/w05r21/8

Hoffan

Can anyone see if i have missed something here in the code, It was working great before i copy/past the DHT sensor to the code; ande after that
it will not really work anymore, Its 4 Binary Buttons, 1 relay And 1 DHT sensor Combo

        #include <Relay.h>
        #include <Sensor.h>
        #include <SPI.h>
        #include <EEPROM.h>  
        #include <RF24.h>
        #include <Bounce2.h>
        #include <DHT.h>  
        
        #define RELAY_1  7  // Arduino Digital I/O pin number for first relay (second on pin+1 etc)
        #define NUMBER_OF_RELAYS 2 
        #define RELAY_ON 0
        #define RELAY_OFF 1
        
        #define BUTTON_PIN1  3  // Arduino Digital I/O pin for button/reed switch
        #define BUTTON_PIN2  4  // Arduino Digital I/O pin for button/reed switch
        #define BUTTON_PIN3  5  // Arduino Digital I/O pin for button/reed switch
        #define BUTTON_PIN4  6  // Arduino Digital I/O pin for button/reed switch
        
        #define CHILD_ID_HUM 0
        #define CHILD_ID_TEMP 1
        #define HUMIDITY_SENSOR_DIGITAL_PIN 8
        
        Sensor gw;
        Bounce debouncer1 = Bounce();
        Bounce debouncer2 = Bounce();
        Bounce debouncer3 = Bounce();
        Bounce debouncer4 = Bounce();
        
        int oldValue1=-1;
        int oldValue2=-1;
        int oldValue3=-1;
        int oldValue4=-1;
        
        DHT dht;
        float lastTemp;
        float lastHum;
        boolean metric = true; 
        
        
        void setup()  
        {  
          gw.begin();
        
          pinMode(BUTTON_PIN1,INPUT);
          digitalWrite(BUTTON_PIN1,HIGH);
          pinMode(BUTTON_PIN2,INPUT);
          digitalWrite(BUTTON_PIN2,HIGH);
          pinMode(BUTTON_PIN3,INPUT);
          digitalWrite(BUTTON_PIN3,HIGH);
          pinMode(BUTTON_PIN4,INPUT);
          digitalWrite(BUTTON_PIN4,HIGH);
          
          dht.setup(HUMIDITY_SENSOR_DIGITAL_PIN); 
          
          
          // After setting up the button, setup debouncer
          debouncer1.attach(BUTTON_PIN1);
          debouncer1.interval(5);
          debouncer2.attach(BUTTON_PIN2);
          debouncer2.interval(5);
          debouncer3.attach(BUTTON_PIN3);
          debouncer3.interval(5);
          debouncer4.attach(BUTTON_PIN4);
          debouncer4.interval(5);
        
        
        
          
          // Register binary input sensor to gw (they will be created as child devices)
          // You can use S_DOOR, S_MOTION or S_LIGHT here depending on your usage.
          // If S_LIGHT is used, remember to update variable type you send in below.
          gw.sendSensorPresentation(BUTTON_PIN1, S_DOOR);  
          gw.sendSensorPresentation(BUTTON_PIN2, S_DOOR);  
          gw.sendSensorPresentation(BUTTON_PIN3, S_DOOR);  
          gw.sendSensorPresentation(BUTTON_PIN4, S_DOOR);  
          
        
          // Send the sketch version information to the gateway and Controller
          gw.sendSketchInfo("4Door2Relay", "1.0");
          
           // Register all sensors to gw (they will be created as child devices)
          gw.sendSensorPresentation(CHILD_ID_HUM, S_HUM);
          gw.sendSensorPresentation(CHILD_ID_TEMP, S_TEMP);
          
          metric = gw.isMetricSystem();
        
          // Register all sensors to gw (they will be created as child devices)
          for (int i=0; i<NUMBER_OF_RELAYS;i++) {
            gw.sendSensorPresentation(RELAY_1+i, S_LIGHT);
          }
          // Fetch relay status
          for (int i=0; i<NUMBER_OF_RELAYS;i++) {
            // Make sure relays are off when starting up
            digitalWrite(RELAY_1+i, RELAY_OFF);
            // Then set relay pins in output mode
            pinMode(RELAY_1+i, OUTPUT);   
              
            // Request/wait for relay status
            gw.getStatus(RELAY_1+i, V_LIGHT);
            setRelayStatus(gw.getMessage()); // Wait here until status message arrive from gw
          }
          
        }
        
        
        /*
        *  Example on how to asynchronously check for new messages from gw
        */
        void loop() 
        {
           debouncer1.update();
           debouncer2.update();
           debouncer3.update();
           debouncer4.update();
        
        
        
          // Get the update value
          int value = debouncer1.read();
          if (value != oldValue1) {
             // Send in the new value
             gw.sendVariable(BUTTON_PIN1, V_TRIPPED, value==HIGH ? "1" : "0");  // Change to V_LIGHT if you use S_LIGHT in presentation above
             oldValue1 = value;
            }
            
        value = debouncer2.read();
        
        if (value != oldValue2) {
        // Send in the new value
        gw.sendVariable(BUTTON_PIN2, V_TRIPPED, value==HIGH ? "1" : "0"); // Change to V_LIGHT if you use S_LIGHT in presentation above
        oldValue2 = value;
        }
        
        value = debouncer3.read();
        
        if (value != oldValue3) {
        // Send in the new value
        gw.sendVariable(BUTTON_PIN3, V_TRIPPED, value==HIGH ? "1" : "0"); // Change to V_LIGHT if you use S_LIGHT in presentation above
        oldValue3 = value;
        } 
         value = debouncer4.read();
        
        if (value != oldValue4) {
        // Send in the new value
        gw.sendVariable(BUTTON_PIN4, V_TRIPPED, value==HIGH ? "1" : "0"); // Change to V_LIGHT if you use S_LIGHT in presentation above
        oldValue4 = value;
        } 
        
         delay(dht.getMinimumSamplingPeriod());
        
          float temperature = dht.getTemperature();
          if (isnan(temperature)) {
              Serial.println("Failed reading temperature from DHT");
          } else if (temperature != lastTemp) {
            lastTemp = temperature;
            if (!metric) {
              temperature = dht.toFahrenheit(temperature);
            }
            gw.sendVariable(CHILD_ID_TEMP, V_TEMP, temperature, 1);
              Serial.print("T: ");
              Serial.println(temperature);
          }
          
          float humidity = dht.getHumidity();
          if (isnan(humidity)) {
              Serial.println("Failed reading humidity from DHT");
          } else if (humidity != lastHum) {
              lastHum = humidity;
              gw.sendVariable(CHILD_ID_HUM, V_HUM, humidity, 1);
              Serial.print("H: ");
              Serial.println(humidity);
          }
        
        
          if (gw.messageAvailable()) {
            message_s message = gw.getMessage(); 
            setRelayStatus(message);
          }
        }
        
        void setRelayStatus(message_s message) {
          if (message.header.messageType==M_SET_VARIABLE &&
              message.header.type==V_LIGHT) {
             int incomingRelayStatus = atoi(message.data);
             // Change relay state
             digitalWrite(message.header.childId, incomingRelayStatus==1?RELAY_ON:RELAY_OFF);
             // Write some debug info
             Serial.print("Incoming change for relay on pin:");
             Serial.print(message.header.childId);
             Serial.print(", New status: ");
             Serial.println(incomingRelayStatus);
           }
        }

implementing multiple sensors

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