Backlit Dimmable LED Mirror with Motion Sensor

[petewill]

@Francois I usually put a "millis" delay for all of my sensors that don't need instant updates (temperature, humidity, light, etc). I have had some of my sensors updating too frequently and causing communication issues for the rest of my sensors. Maybe that's what's happening to you? Try adding some code so the light sensor only updates once per 10 seconds or what ever interval you feel is good. You can use my motion sensor code as an example for adding a delay with millis.

[henno]

@petewill Just wanted to let you know that I've built two of these for my daughters but instead of putting them behind a mirror I put it under their bed. Works really good, thanks for sharing!

[petewill]

@henno Cool idea!

[hek]

@henno said:

I've built two of these for my daughters but instead of putting them behind a mirror I put it under their bed.

Scares away all the monsters? :trollface:

[DrJeff]

@henno That is too funny I was at a hotel and they had LEDs under the cabinets with motion sensors to light the floor. So when I came home I knew I saw some guy doing something similar to a mirror that I'm gonna steal for under my bed to walk at night without bumping my toes! Thanks Pete!

[csa02221862]

For those of us without a central 12v system do you know what the current draw is?

What is your system setup? Thinking of doing the same.

[petewill]

@csa02221862 Sorry for the delayed reply. Unfortunately I don't remember what the power draw is. I believe it is around 1.5A but can't say for sure.

[csa02221862]

Thanks. I'm hopeing to do a "ehole house" 12v system also. What is your power source. I've been looking at

http://www.banggood.com/AC110V-220V-To-DC12V-12_5A-150W-Voltage-Transformer-Switch-Power-Supply-For-LED-Strip-p-984967.html?currency=USD&createTmp=1&utm_source=google&utm_medium=shopping&utm_content=saul&utm_campaign=led-gadget-US&gclid=Cj0KEQjw44exBRCu8vfS_bPEtNoBEiQACrt002cdBU-mBxB0Z5PGsGCkTgwp37OcWYL28zNGmJNjTu8aAitZ8P8HAQ

Thoughts?

[petewill]

@csa02221862 Depending on what you want to run it may be a little under powered. For the last year and a half I have been using a hacked 300 watt PC power supply. I originally just set it up as a temporary measure but it has been working great. I have even made some stupid wiring mistakes and shorted it out a few times. Each time I just fix the mistake and it powers right back on. I need to make a video of how I set everything up but I have had so little time lately...

[csa02221862]

Thanks for the info. I may get this for use in the "lab" and see what you are doing with the computer power supply when you do the video. I believe many of us would like to have a 12v/5v power distribution system in the house.

Your videos are OUTSTANDING!

[csa02221862]

Looking forward to the "whole house power" video.

I'm building this for two mirrors as well as kitchen under counter and bookcase down lighting.

Your Vera videos have been MOST helpful. You do great "practical" work.

THANKS AGAIN!

[petewill]

@csa02221862 Great! I have these all around my house in various places and I love them. All credit goes to @blacey.

I do need to work on the power video. There are so many things I want to work on I have been focusing on making videos as I work on new sensors. It's so hard to find time these days...

[Dave Dan]

@petewill ,

I have a question on this project.

I'm replicating it for a wider mirror and I was thinking about having two separate dimming zones ( left and right ). based on the sketch and the design: Do you think One arduino can control both sides or do I need 2 different arduinos (+ electronics) and one won't be enough.

Happy to details more if needed.

thanks in advance!

[petewill]

@Dave-Dan said:

Do you think One arduino can control both sides or do I need 2 different arduinos (+ electronics) and one won't be enough.

Definitely. I have one pro mini controlling 3 different dimmers. You just need to make sure you use PWM pins for the outputs.

[Dave Dan]

Cool, thanks for the quick reply.

I'm going to test this this weekend and see if I can make it work :)

[csa02221862]

Do you have the Fitzing and code for the 3 zone? I have several places to use this. Any "max wattage" info, per channel and total?

Thanks,
Richard

[petewill]

@csa02221862

Sorry it has been too long since I made this video and I don't remember the reference. If you're talking about my Arduino that dims three separate lights it's basically just the same wiring except you use 3 different PWM pins to the 3 different MOSFETs. The max wattage is determined by the MOSFET you use.

If that's not what you're referring to, let me know.

[csa02221862]

@petewill Yes that's what I'm talking about. Just wondering how the code was modified to discretely control the 3 zones.

[BulldogLowell]

@csa02221862 said:

@petewill Yes that's what I'm talking about. Just wondering how the code was modified to discretely control the 3 zones.

you want with or without the buttons?

If with, how would the buttons work?

[petewill]

@csa02221862 Sorry for the delayed reply. Busy day yesterday. Here is my code that I'm running in my 1.4.1/1.5 environment.

/***
 * 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.
 * 
 * DESCRIPTION
 * This sketch provides a Dimmable LED Light using PWM and based Henrik Ekblad 
 * <henrik.ekblad@gmail.com> Vera Arduino Sensor project.  
 * Developed by Bruce Lacey, inspired by Hek's MySensor's example sketches.
 * 
 * The circuit uses a MOSFET for Pulse-Wave-Modulation to dim the attached LED or LED strip.  
 * The MOSFET Gate pin is connected to Arduino pin 3 (LED_PIN), the MOSFET Drain pin is connected
 * to the LED negative terminal and the MOSFET Source pin is connected to ground.  
 *
 * This sketch is extensible to support more than one MOSFET/PWM dimmer per circuit.
 *
 * REVISION HISTORY
 * Version 1.0 - February 15, 2014 - Bruce Lacey
 * Version 1.1 - August 13, 2014 - Converted to 1.4 (hek)
 * Version 1.2 - January 22, 2015 - Created a seperate control for the basement LEDs 
 * Version 1.3 - March 7, 2015 - Added coat closet LED
 *
 ***/
#define SN "Basement LEDs"
#define SV "1.3"

#include <MySensor.h> 
#include <SPI.h>

#define NODE_ID AUTO //Change to a number to manually assign a node ID

#define MASTER_WINDOW_LED_CHILD 0
#define COAT_CLOSET_LED_CHILD 1
#define UPSTAIRS_RAIL_LED_CHILD 30
#define BASEMENT_DESK_LED_CHILD 40

#define MASTER_WINDOW_LED_PIN 3      // Arduino pin attached to MOSFET Gate pin
#define UPSTAIRS_RAIL_LED_PIN 5
#define BASEMENT_DESK_LED_PIN 6
#define COAT_CLOSET_LED_PIN 9

#define FADE_DELAY 10  // Delay in ms for each percentage fade up/down (10ms = 1s full-range dim)

//MySensor gw;
MySensor gw(4, 10);  //Change CE PIN to free up another PWM pin

static int currentLevelUpstairsRail = 0;
static int currentLevelBasementDesk = 0;
static int currentLevelMasterWinLight = 0;
static int currentLevelCoatCloset = 0;


/***
 * Dimmable LED initialization method
 */
void setup()  
{ 
  Serial.println( SN ); 
  gw.begin( incomingMessage,  NODE_ID);
  
  // Register the LED Dimmable Light with the gateway
  gw.present(UPSTAIRS_RAIL_LED_CHILD, S_DIMMER );
  gw.present(BASEMENT_DESK_LED_CHILD, S_DIMMER ); 
  gw.present(MASTER_WINDOW_LED_CHILD, S_DIMMER );
  gw.present(COAT_CLOSET_LED_CHILD, S_DIMMER );
  
  gw.sendSketchInfo(SN, SV);
}

/***
 *  Dimmable LED main processing loop 
 */
void loop() 
{
  gw.process();
}



void incomingMessage(const MyMessage &message) {
  if (message.type == V_LIGHT || message.type == V_DIMMER) {
    
    //  Retrieve the power or dim level from the incoming request message
    int requestedLevel = atoi( message.data );
    
    // Adjust incoming level if this is a V_LIGHT variable update [0 == off, 1 == on]
    requestedLevel *= ( message.type == V_LIGHT ? 100 : 1 );
    
    // Clip incoming level to valid range of 0 to 100
    requestedLevel = requestedLevel > 100 ? 100 : requestedLevel;
    requestedLevel = requestedLevel < 0   ? 0   : requestedLevel;
    
//    Serial.print( "Changing level to " );
//    Serial.println( requestedLevel );


    //fadeToLevel( requestedLevel );//old code
    fadeToLevel( message.sensor, requestedLevel );
    }
}



void fadeToLevel(int ledChild, int toLevel ) {
//    Serial.print( "In the FadeToLevel method.  ChildID: " );
//    Serial.println( ledChild );

  int currentLevel;
  int ledPin;
  
  if(ledChild == UPSTAIRS_RAIL_LED_CHILD){
    currentLevel = currentLevelUpstairsRail;
    ledPin = UPSTAIRS_RAIL_LED_PIN; 
  }
  else if(ledChild == MASTER_WINDOW_LED_CHILD){
    currentLevel = currentLevelMasterWinLight;
    ledPin = MASTER_WINDOW_LED_PIN;
  }
  else if(ledChild == COAT_CLOSET_LED_CHILD){
    currentLevel = currentLevelCoatCloset;
    ledPin = COAT_CLOSET_LED_PIN;
  }
  else{
    currentLevel = currentLevelBasementDesk;
    ledPin = BASEMENT_DESK_LED_PIN;
  }
  
  int delta = ( toLevel - currentLevel ) < 0 ? -1 : 1;
  
  while ( currentLevel != toLevel ) {
    currentLevel += delta;
    analogWrite(ledPin, (int)(currentLevel / 100. * 255) );
    delay( FADE_DELAY );
//    Serial.println( ledPin );
  }
  
  if(ledChild == UPSTAIRS_RAIL_LED_CHILD){
    currentLevelUpstairsRail = toLevel;
  }
  else if(ledChild == MASTER_WINDOW_LED_CHILD){
    currentLevelMasterWinLight = toLevel;
  }
  else if(ledChild == COAT_CLOSET_LED_CHILD){
    currentLevelCoatCloset = toLevel;
  }
  else{
    currentLevelBasementDesk = toLevel;
  }
    //gw.sendVariable( ledChild, V_LIGHT,  currentLevel > 0 ? 1 : 0 ); 
    //gw.sendVariable( ledChild, V_DIMMER, currentLevel );
    MyMessage dimmerMsg(ledChild,  V_DIMMER);
    gw.send(dimmerMsg.set(currentLevel));
    
  
}```