💬 Multi-Sensor: Temp/Humidity/PIR/ Leak/Magnet/Light/Accel

[Nca78]

@neverdie this looks pretty small for a buzzer already. Sorry no idea about smaller ones, but please post your results I'm interested :)

[NeverDie]

@nca78 Will do. I ordered 20 of them. Might be a nice addition on a leak detector also.

[NeverDie]

I finally received the MAX44009 board:
https://www.aliexpress.com/item/Smart-Electronics-5PCS-lot-MAX44009-ambient-light-sensor-is-the-I2C-digital-output-module-development-board/32767691971.html?spm=a2g0s.9042311.0.0.sOFetX
I'm able to read lux values by pulling A0 on the board to Vcc and using this library and sketch:
https://github.com/dantudose/MAX44009/blob/master/Example/Luxmeter.ino
Very easy. :)

[Nca78]

@neverdie you don't even need to bother with a lib, just 2 functions are enough.
https://blog.kkessler.com/tag/max44009/

[scalz]

even if it's two functions only, if i need to reuse them in others sketch, I would prefer them in a lib. Only "one line" (include) in the sketch compared to x lines ;)

[NeverDie]

@nca78 said in 💬 Multi-Sensor: Temp/Humidity/PIR/ Leak/Magnet/Light/Accel:

@neverdie this looks pretty small for a buzzer already. Sorry no idea about smaller ones, but please post your results I'm interested :)

Received it today. Putting just DC across it produces no sound at all. Driving it with a pulsed voltage (say 10K hertz at 50% duty cycle) directly from an arduino pin produces sound, but at very low volume. Since it draws 220ma with a straight 3v DC voltage across it, I'm guessing a current more like that is what it will take to get it to produce louder sound, but that's only just a wild guess.

[NeverDie]

I tried driving it from a load switch controlled by the arduino, and that helped increase the volume somewhat.

Doing that, and using this script, I think it will be audible if you're in the same room as it (and if the room is otherwise quiet).

long lastMicrosTime=0;  //timestamp in microseconds

void setup() {
  pinMode(10,OUTPUT);
}

void loop() {
  for (int x=0;x<1000;x++) {
    digitalWrite(10,HIGH);
    lastMicrosTime=micros();
    while ((micros()-lastMicrosTime)<300) {} //wait until 300 microseconds have passed
    digitalWrite(10,LOW);
    while ((micros()-lastMicrosTime)<x) {} //wait until another x microseconds have passed
  }
}

So, if you were to use it as a locator beacon attached to something you wanted to find, it might be good enough for that.

[Nca78]

@neverdie said in 💬 Multi-Sensor: Temp/Humidity/PIR/ Leak/Magnet/Light/Accel:

Doing that, and using this script, I think it will be audible if you're in the same room as it (and if the room is otherwise quiet).

Guess this is not made for Vietnam then :D
I supposed this type of buzzer is made more for user feedback for things like touch sensors, than for raising alert.

[NeverDie]

@nca78 What strange is that if I cup my hand over it, it actually becomes louder. Not sure what's up with that. So, maybe I'm just not driving it right.

[NeverDie]

Here's the latest version of the PIR sensor embodiment:

It runs from two CR2032's.

Very compact! :)

[ahmedadelhosni]

@neverdie how do you connect thr two Cr batteries ?

Another question ? I read in another comments that you need 100-200 uF capacitor so that the radio can work since thr CR battery wont be strong enough. Did you add this ?

[NeverDie]

@ahmedadelhosni said in 💬 Multi-Sensor: Temp/Humidity/PIR/ Leak/Magnet/Light/Accel:

how do you connect thr two Cr batteries ?

This was recently discussed in the Bluetooth action! thread.

[Nca78]

@neverdie said in 💬 Multi-Sensor: Temp/Humidity/PIR/ Leak/Magnet/Light/Accel:

@nca78 What strange is that if I cup my hand over it, it actually becomes louder. Not sure what's up with that. So, maybe I'm just not driving it right.

Isn't that the principle for most speakers, using a sound box ?

[Tiwo85]

Wich board do you use in arduino? I can only use Waveshare BLE4.0. At Generic etc. It seems, that the oscillator doesn't work probably.

[NeverDie]

@tiwo85 said in 💬 Multi-Sensor: Temp/Humidity/PIR/ Leak/Magnet/Light/Accel:

Wich board do you use in arduino? I

Not sure what you're asking.

[Tiwo85]

@neverdie I mean this:

When I use Generic nRF51 or something else, the onboard LED turns on and doesn't turns off. When I use Waveshare BLE400 the sketch works as usual

[NeverDie]

@tiwo85
I use this:

You download it from @d00616 on github.

[Tiwo85]

@neverdie do you have a working example sketch. I try the example sketch from the 10years pir sensor an d modify a little bit, but it doesn't work. The sketch awake every 5 minutes and send the state from the pir and that's it.

[NeverDie]

@tiwo85
https://www.openhardware.io/view/510/Multi-Sensor-TempHumidityPIR-LeakMagnetLightAccel#tabs-source

[Tiwo85]

@neverdie thank you. I made this sketch work. But I need to get work interrupts. I use your code for the am612, but it doesn't work. Then I use the example from Redbear labs "Example interrupted" to turn on the led when p0.02 is high. I use Mysensors library and set My Core only. Then it runs. But when I try to integrate Mysensors routines "presentation" etc. And disable "my core only" , then the interrupt doesn't work.

// SUMMARY: This demo sketch runs on the AM612 PIR v607 PCBto transmit battery voltage (heartbeat) and motion detections to a MySensors gateway using MySensors protocols.

// Note: because this is a passive node, node ID must be set manually to a unique sensor node ID:
#define MY_NODE_ID 143  // Passive mode requires static node ID

//#define MY_CORE_ONLY

#define MY_PASSIVE_NODE

#define MY_RADIO_NRF5_ESB



/**
 * The MySensors Arduino library handles the wireless radio link and protocol
 * between your home built sensors/actuators and HA controller of choice.
 * The sensors forms a self healing radio network with optional repeaters. Each
 * repeater and gateway builds a routing tables in EEPROM which keeps track of the
 * network topology allowing messages to be routed to nodes.
 *
 * Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
 * Copyright (C) 2013-2017 Sensnology AB
 * Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors
 *
 * Documentation: http://www.mysensors.org
 * Support Forum: http://forum.mysensors.org
 *
 * 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.
 *
 *******************************
 *
 * REVISION HISTORY
 * Version 1.0 - tekka
 *
 * DESCRIPTION
 * Passive node example: This is a passive & independent reporting node
 *
 */

// This demo sketch also draws from the MySensor's example MotionSensor sketch.

#define IS_NRF51  //true iff the target is an nRF51.  If an nRF52, then comment this line out!

#define SHORT_WAIT 50

// Enable debug prints
//#define MY_DEBUG

#define PIN_LED1                (4) // 4 is sensor LED , 1 is onboard LED
#define LED_BUILTIN          PIN_LED1

#define PIN_SENSOR1                (10) // 2 is waterleak, 10 is PIR , 3 is Pin5/INT
#define SENSOR1         PIN_SENSOR1


#include <MySensors.h>

//#define CHILD_ID_TEMP 1  //definitions contributed by smilvert (see above credit)
#define CHILD_ID 2   // Id of the motion sensor child
#define ID_S_MULTIMETER        28

// Initialize general message
//MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
MyMessage msg(CHILD_ID, V_TRIPPED);
MyMessage msg_S_MULTIMETER_V_VOLTAGE(ID_S_MULTIMETER,V_VOLTAGE);

float batteryVoltage=0;  

/*#include "nrf_temp.h"

float read_temp_value(){

  float temp=0;

  // Starten Sie die Temperaturmessung. 
  NRF_TEMP->TASKS_START = 1; 

  // Warten Sie, bis die Temperaturmessung abgeschlossen ist.
  while (NRF_TEMP->EVENTS_DATARDY == 0){
    // Do nothing.}
  }
  NRF_TEMP->EVENTS_DATARDY = 0;

  // Lesen Sie den Temperaturwert vom Sensor ab
  // Die Genauigkeit beträgt 0,25 Grad Celsius <=> 1 Einheit = 0,25 Grad Celsius
  // Teile durch 4, um einen C-Wert zu erhalten
  
  temp = ((float)nrf_temp_read() / 4.);

  // Hoàn thành quá trình đo. 
  NRF_TEMP->TASKS_STOP = 1; 

  return temp;
}*/

void blinkityBlink(uint8_t repetitions) {
  for (int x=0;x<repetitions;x++) {
    digitalWrite(LED_BUILTIN ,HIGH);
    delay(20);
    digitalWrite(LED_BUILTIN ,LOW);
    delay(100);
    digitalWrite(LED_BUILTIN ,HIGH);
    delay(20);
    digitalWrite(LED_BUILTIN ,LOW);    
    if (x<(repetitions-1)) {  //skip waiting at the end of the final repetition
      delay(500);
    }
  }
}

void handle_irq3(void) {
  if(HIGH == digitalRead(SENSOR1)){
      digitalWrite(LED_BUILTIN , HIGH);
      send(msg.set("1"));  // motion detected
  }
  else
  {
      digitalWrite(LED_BUILTIN , LOW);
       send(msg.set("0"));  // send all-clear to prepare for future detections
  }
}

void presentation()
{
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo("NRF Motion Sensor", "1.0");
   // wait(SHORT_WAIT);
   // present(CHILD_ID_TEMP, S_TEMP,"Onboard Temperature");
  wait(SHORT_WAIT);
  // Register all sensors to gw (they will be created as child devices)
  present(CHILD_ID, S_MOTION,"Motion Sensor");

  wait(SHORT_WAIT);
  
  present(ID_S_MULTIMETER,S_MULTIMETER,"Electric Station");
  wait(SHORT_WAIT);
}


void setup() {
    // put your setup code here, to run once:
    //hwInit();
  //hwPinMode(LED_BUILTIN,OUTPUT_D0H1);
  //hwPinMode(SENSOR1,INPUT);

   //nrf_temp_init();
  pinMode(LED_BUILTIN , OUTPUT);
    digitalWrite(LED_BUILTIN , LOW);
  blinkityBlink(5);  //signify power-up and start of operations

  // set interrupts, pin default is HIGH
  attachInterrupt(SENSOR1, handle_irq3, CHANGE);
}

void loop() {
  // put your main code here, to run repeatedly:
  //send(msgTemp.set(read_temp_value(),2));
  batteryVoltage=((float)hwCPUVoltage())/1000.0;  //take voltage measurement after transmission to hopefully measure lowest voltage that occurs. 
  send(msg_S_MULTIMETER_V_VOLTAGE.set(batteryVoltage,3));  //send battery voltage with 3 decimal places
  sleep(900000); //sleep 15 min
}