Dimming LED Strips Controlled with PIR Sensors and RTC!

This project will leave you with a pair of LED strips in your chosen location that are dimmed on and off based on a pair of PIR sensors.

May 12, 2020

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lights

home automation

Components and supplies

PIR Motion Sensor (generic)

Arduino Uno R4 Pro - By OSEPP

Coin Cell Battery CR1220

Muzata 2M LED Channel system

Perma-Proto Breadboard, Quarter-size

Muzata 10PCS LED Channel corner, L-shape adapter

Power MOSFET N-Channel

Resistor 10k ohm

Standoff kit

Muzata Extension connectors for the LED Channels

OSEPP Sensor Shield

Cat5/Cat6 Surface Mounting Box

Real-Time Clock and Micro SD Breakout Board

Toggle Switch, Toggle

Hook Up Wire Kit, 22 AWG

Plastic Enclosure, Project Box

LED strips by Novostella

Tools and machines

Soldering iron (generic)

Wire Stripper & Cutter, 26-14 AWG Solid & Stranded Wires

Cross-tip "Phillips" screwdriver

Solder Wire, Lead Free

Helping Hand Tool, with Magnifying Glass

Tape Measure, Manual

Miter Box

Hacksaw

Drill bits, Assorted

Drill / Driver, Cordless

Project description

Code

LED_Strip_03_RTC

c_cpp

This program was made for my Arduino Uno R4, to operate a set of LED strips based on input from two motion sensors. The project incorporates a real-time clock, and is referenced in the code comments.

1/*   5/8/2020
2 *   Program by Gabriel Winkler
3 *   
4 *   This  program uses the DS1307 real time clock to control two sets of LED strips.
5 *   One set will fade up and down in brightness while the other will come on instantly.
6  *   The two strips are triggered by a pair of PIR sensors, one for each strip.
7*/
8#include<Wire.h>                // This will be used by the Real Time Clock
9#include<TimeLib.h>             // This too...
10#include<RTClib.h>              // ...and this.
11
12//  Defining the pins for the two strips
13#define HALL_LED 9
14#define CLOSET_LED  6
15
16int calTime = 20;               // This is the time we allow the sensors  to calibrate
17long unsigned int lowIn;        // This is the number of milliseconds  the sensor must be LOW before
18                                //  we assume motion  has stopped
19long unsigned int pause = 5000; // Our default pause time, 5 seconds.
20boolean  lockLow = true;         
21boolean lockLow2 = true;        // Needed to separate  the lockLow variables so the lights will turn off correctly
22boolean takeLowTime;
23boolean  takeLowTime2;
24int pirHallPin = 10;            // the pin that the PIR sensor  is connected to for the hall light
25                                // Pin 11  will be always on but very dim due to a small draw in amps...
26int pirClosetPin  = 11;          // the pin that the PIR sensor is connected to for the closet light
27
28//  Setting the variables for brightness
29int bright = 255;
30int nightBright = 20;
31//  Individual strip brightness values
32int hallBright = 0;
33int closetBright =  0;
34int nightHallBright = 0;
35int nightClosetBright = 0;
36
37// Fade speed  control. Higher numbers mean faster fading.
38int fadeSpd = 10;
39int nightFadeSpd  = 2;
40
41// For real-time clock:
42RTC_DS1307 rtc;
43
44void setup() {
45  // This section is for the PIR sensor
46  Serial.begin(9600); // Don't forget  to set the serial monitor to this value...
47  if(!rtc.begin()){
48    Serial.println("RTC  not working.");
49    while(true);
50  }
51  rtc.adjust(DateTime(F(__DATE__),  F(__TIME__)));
52  pinMode(pirHallPin, INPUT);
53  pinMode(pirClosetPin, INPUT);
54  digitalWrite(pirHallPin, LOW);
55  digitalWrite(pirClosetPin, LOW);
56  //  Give  the sensor time to calibrate...
57  Serial.print("Calibrating sensor... ");
58  for(int i = 0; i < calTime; i++){
59    Serial.print("-");
60    delay(1000);
61  }
62  Serial.println(" done.");
63  Serial.println("*** SENSOR ACTIVE ***");
64  delay(50);
65
66  
67  // Setting pins for output
68  pinMode(HALL_LED, OUTPUT);
69  pinMode(CLOSET_LED, OUTPUT);
70//  pinMode(BUTTON, INPUT);
71}
72
73void TurnOnHall(){
74  for (int i=0; i < 256; i++){
75    analogWrite(HALL_LED, hallBright);
76    hallBright  += 1;
77    delay(fadeSpd);
78  }
79  Serial.println("Hall Light on.");
80}
81
82void  TurnOnCloset(){
83//  for (int i=0; i < 256; i++){
84  analogWrite(CLOSET_LED,  bright);
85//    closetBright += 1;
86//    delay(fadeSpd);
87//  }
88  Serial.println("Closet  light on.");
89}
90
91void TurnOffHall(){
92  for (int i=0; i < 256; i++){
93    analogWrite(HALL_LED, bright);
94    bright -= 1;
95    delay(fadeSpd);
96  }
97  Serial.println("Hall light off.");
98}
99
100void TurnOffCloset(){
101//  for (int i=0; i < 256; i++){
102    analogWrite(CLOSET_LED, closetBright);
103//    bright -= 1;
104//    delay(fadeSpd);
105//  }
106  Serial.println("Closet  light off.");
107}
108
109void TurnOnHallNight() {
110  for (int i=0; i < 20; i++){
111    analogWrite(HALL_LED, nightHallBright);
112    nightHallBright += 1;
113    delay(nightFadeSpd);
114  }
115  nightHallBright = 0;
116}
117
118void TurnOnClosetNight(){
119  for (int  i=0; i < 20; i++){
120    analogWrite(CLOSET_LED, nightClosetBright);
121    nightClosetBright  += 1;
122    delay(nightFadeSpd);
123  }
124  nightClosetBright = 0;
125}
126
127void  TurnOffHallNight() {
128  for (int i=0; i < 20; i++){
129    analogWrite(HALL_LED,  nightBright);
130    nightBright -= 1;
131    delay(nightFadeSpd);
132  }
133  nightBright  = 20;
134  analogWrite(HALL_LED, 0);
135}
136
137void TurnOffClosetNight(){
138  for (int i=0; i < 20; i++){
139    analogWrite(CLOSET_LED, nightBright);
140    nightBright  -= 1;
141    delay(nightFadeSpd);
142  }
143  nightBright = 20;
144  analogWrite(CLOSET_LED,  0);
145}
146
147void TestFlash(){ // This is to help find where in the loop the  program is.
148  for (int i=0;i < 3;i++){
149    analogWrite(HALL_LED, nightBright);
150    delay(300);
151    analogWrite(HALL_LED, 0);
152    analogWrite(CLOSET_LED,  nightBright);
153    delay(300);
154    analogWrite(CLOSET_LED, 0);
155    delay(100);
156  }
157}
158
159void loop() {
160  // This will get the hour of the day from the  RTC module
161  DateTime now = rtc.now();           // Sets the "now" variable  to the current time
162//  Serial.print("Hour: ");           
163//  Serial.println(now.hour(),  DEC);  // This lets us see what the hour is reading
164
165// This if statement  will use the hour of the day to decide day or night ops
166// Changing the high  number will adjust the hour when the night settings take over.
167// Changing the  low number will adjust the hour when the night settings stop.
168  if(now.hour()  >= 21 || now.hour() <= 9){
169      // TurnOnHallNight will be for the hall LED  strip
170    if(digitalRead(pirHallPin) == HIGH){
171      if(lockLow){
172        lockLow  = false;
173        Serial.println("---");
174        Serial.print("Night motion  detected in the hall at ");
175        Serial.print(now.hour(), DEC);
176        Serial.print(":");
177        Serial.println(now.minute(), DEC);
178        delay(50);
179        TurnOnHallNight();
180      }
181      takeLowTime = true;
182    }
183    if(digitalRead(pirHallPin)  == LOW){
184      if(takeLowTime){
185        lowIn = millis();
186        takeLowTime  = false;
187      }
188      if(!lockLow && millis() - lowIn > pause){
189        lockLow  = true;
190        Serial.print("Night motion ended in the hall at ");
191        Serial.print(now.hour(),  DEC);
192        Serial.print(":");
193        Serial.println(now.minute(), DEC);
194        
195        TurnOffHallNight();
196      }
197    }
198  
199   // TurnOnClosetNight  will be for the closet LED strip.
200    if(digitalRead(pirClosetPin) == HIGH){
201      if(lockLow2){
202        lockLow2 = false;
203        Serial.println("---");
204        Serial.print("Night motion detected in the closet at ");
205        Serial.print(now.hour(),  DEC);
206        Serial.print(":");
207        Serial.println(now.minute(), DEC);
208        delay(50);
209        TurnOnClosetNight();
210      }
211      takeLowTime2  = true;
212    }
213    if(digitalRead(pirClosetPin) == LOW){
214      if(takeLowTime2){
215        lowIn = millis();
216        takeLowTime2 = false;
217      }
218      if(!lockLow2  && millis() - lowIn > pause){
219        lockLow2 = true;
220        Serial.print("Night  motion ended in the closet at ");
221        Serial.print(now.hour(), DEC);
222        Serial.print(":");
223        Serial.println(now.minute(), DEC);
224        TurnOffClosetNight();
225      }
226    }
227  }
228// Below this should all be for daytime running...
229  else{ 
230      // TurnHallOn will be for the hall, and should be called in the  first two "if" statements.
231    if(digitalRead(pirHallPin) == HIGH){
232      if(lockLow){
233        lockLow = false;
234        Serial.println("---");
235        Serial.print("Motion  detected in the hall at ");
236        Serial.print(now.hour(), DEC);
237        Serial.print(":");
238        Serial.println(now.minute(), DEC);
239        delay(50);
240        TurnOnHall();
241      }
242      takeLowTime = true;
243    }
244    if(digitalRead(pirHallPin)  == LOW){
245      if(takeLowTime){
246        lowIn = millis();
247        takeLowTime  = false;
248      }
249      if(!lockLow && millis() - lowIn > pause){
250        lockLow  = true;
251        Serial.print("Motion ended in the hall at ");
252        Serial.print(now.hour(),  DEC);
253        Serial.print(":");
254        Serial.println(now.minute(), DEC);
255        TurnOffHall();
256      }
257    }
258  
259   // TurnClosetOn will be for  the closet, and should be called in the second two "if" statements.
260    if(digitalRead(pirClosetPin)  == HIGH){
261      if(lockLow2){
262        lockLow2 = false;
263        Serial.println("---");
264        Serial.print(now.hour(), DEC);
265        Serial.print(":");
266        Serial.println(now.minute(),  DEC);
267        delay(50);
268        TurnOnCloset();
269      }
270      takeLowTime2  = true;
271    }
272    if(digitalRead(pirClosetPin) == LOW){
273      if(takeLowTime2){
274        lowIn = millis();
275        takeLowTime2 = false;
276      }
277      if(!lockLow2  && millis() - lowIn > pause){
278        lockLow2 = true;
279        Serial.print("Motion  ended in the closet at ");
280        Serial.print(now.hour(), DEC);
281        Serial.print(":");
282        Serial.println(now.minute(), DEC);
283        TurnOffCloset();
284      }
285    }
286  }
287}

/*   5/8/2020
 *   Program by Gabriel Winkler
 *   
 *   This  program uses the DS1307 real time clock to control two sets of LED strips.
 *   One set will fade up and down in brightness while the other will come on instantly.
  *   The two strips are triggered by a pair of PIR sensors, one for each strip.
*/
#include<Wire.h>                // This will be used by the Real Time Clock
#include<TimeLib.h>             // This too...
#include<RTClib.h>              // ...and this.

//  Defining the pins for the two strips
#define HALL_LED 9
#define CLOSET_LED  6

int calTime = 20;               // This is the time we allow the sensors  to calibrate
long unsigned int lowIn;        // This is the number of milliseconds  the sensor must be LOW before
                                //  we assume motion  has stopped
long unsigned int pause = 5000; // Our default pause time, 5 seconds.
boolean  lockLow = true;         
boolean lockLow2 = true;        // Needed to separate  the lockLow variables so the lights will turn off correctly
boolean takeLowTime;
boolean  takeLowTime2;
int pirHallPin = 10;            // the pin that the PIR sensor  is connected to for the hall light
                                // Pin 11  will be always on but very dim due to a small draw in amps...
int pirClosetPin  = 11;          // the pin that the PIR sensor is connected to for the closet light

//  Setting the variables for brightness
int bright = 255;
int nightBright = 20;
//  Individual strip brightness values
int hallBright = 0;
int closetBright =  0;
int nightHallBright = 0;
int nightClosetBright = 0;

// Fade speed  control. Higher numbers mean faster fading.
int fadeSpd = 10;
int nightFadeSpd  = 2;

// For real-time clock:
RTC_DS1307 rtc;

void setup() {
  // This section is for the PIR sensor
  Serial.begin(9600); // Don't forget  to set the serial monitor to this value...
  if(!rtc.begin()){
    Serial.println("RTC  not working.");
    while(true);
  }
  rtc.adjust(DateTime(F(__DATE__),  F(__TIME__)));
  pinMode(pirHallPin, INPUT);
  pinMode(pirClosetPin, INPUT);
  digitalWrite(pirHallPin, LOW);
  digitalWrite(pirClosetPin, LOW);
  //  Give  the sensor time to calibrate...
  Serial.print("Calibrating sensor... ");
  for(int i = 0; i < calTime; i++){
    Serial.print("-");
    delay(1000);
  }
  Serial.println(" done.");
  Serial.println("*** SENSOR ACTIVE ***");
  delay(50);

  
  // Setting pins for output
  pinMode(HALL_LED, OUTPUT);
  pinMode(CLOSET_LED, OUTPUT);
//  pinMode(BUTTON, INPUT);
}

void TurnOnHall(){
  for (int i=0; i < 256; i++){
    analogWrite(HALL_LED, hallBright);
    hallBright  += 1;
    delay(fadeSpd);
  }
  Serial.println("Hall Light on.");
}

void  TurnOnCloset(){
//  for (int i=0; i < 256; i++){
  analogWrite(CLOSET_LED,  bright);
//    closetBright += 1;
//    delay(fadeSpd);
//  }
  Serial.println("Closet  light on.");
}

void TurnOffHall(){
  for (int i=0; i < 256; i++){
    analogWrite(HALL_LED, bright);
    bright -= 1;
    delay(fadeSpd);
  }
  Serial.println("Hall light off.");
}

void TurnOffCloset(){
//  for (int i=0; i < 256; i++){
    analogWrite(CLOSET_LED, closetBright);
//    bright -= 1;
//    delay(fadeSpd);
//  }
  Serial.println("Closet  light off.");
}

void TurnOnHallNight() {
  for (int i=0; i < 20; i++){
    analogWrite(HALL_LED, nightHallBright);
    nightHallBright += 1;
    delay(nightFadeSpd);
  }
  nightHallBright = 0;
}

void TurnOnClosetNight(){
  for (int  i=0; i < 20; i++){
    analogWrite(CLOSET_LED, nightClosetBright);
    nightClosetBright  += 1;
    delay(nightFadeSpd);
  }
  nightClosetBright = 0;
}

void  TurnOffHallNight() {
  for (int i=0; i < 20; i++){
    analogWrite(HALL_LED,  nightBright);
    nightBright -= 1;
    delay(nightFadeSpd);
  }
  nightBright  = 20;
  analogWrite(HALL_LED, 0);
}

void TurnOffClosetNight(){
  for (int i=0; i < 20; i++){
    analogWrite(CLOSET_LED, nightBright);
    nightBright  -= 1;
    delay(nightFadeSpd);
  }
  nightBright = 20;
  analogWrite(CLOSET_LED,  0);
}

void TestFlash(){ // This is to help find where in the loop the  program is.
  for (int i=0;i < 3;i++){
    analogWrite(HALL_LED, nightBright);
    delay(300);
    analogWrite(HALL_LED, 0);
    analogWrite(CLOSET_LED,  nightBright);
    delay(300);
    analogWrite(CLOSET_LED, 0);
    delay(100);
  }
}

void loop() {
  // This will get the hour of the day from the  RTC module
  DateTime now = rtc.now();           // Sets the "now" variable  to the current time
//  Serial.print("Hour: ");           
//  Serial.println(now.hour(),  DEC);  // This lets us see what the hour is reading

// This if statement  will use the hour of the day to decide day or night ops
// Changing the high  number will adjust the hour when the night settings take over.
// Changing the  low number will adjust the hour when the night settings stop.
  if(now.hour()  >= 21 || now.hour() <= 9){
      // TurnOnHallNight will be for the hall LED  strip
    if(digitalRead(pirHallPin) == HIGH){
      if(lockLow){
        lockLow  = false;
        Serial.println("---");
        Serial.print("Night motion  detected in the hall at ");
        Serial.print(now.hour(), DEC);
        Serial.print(":");
        Serial.println(now.minute(), DEC);
        delay(50);
        TurnOnHallNight();
      }
      takeLowTime = true;
    }
    if(digitalRead(pirHallPin)  == LOW){
      if(takeLowTime){
        lowIn = millis();
        takeLowTime  = false;
      }
      if(!lockLow && millis() - lowIn > pause){
        lockLow  = true;
        Serial.print("Night motion ended in the hall at ");
        Serial.print(now.hour(),  DEC);
        Serial.print(":");
        Serial.println(now.minute(), DEC);
        
        TurnOffHallNight();
      }
    }
  
   // TurnOnClosetNight  will be for the closet LED strip.
    if(digitalRead(pirClosetPin) == HIGH){
      if(lockLow2){
        lockLow2 = false;
        Serial.println("---");
        Serial.print("Night motion detected in the closet at ");
        Serial.print(now.hour(),  DEC);
        Serial.print(":");
        Serial.println(now.minute(), DEC);
        delay(50);
        TurnOnClosetNight();
      }
      takeLowTime2  = true;
    }
    if(digitalRead(pirClosetPin) == LOW){
      if(takeLowTime2){
        lowIn = millis();
        takeLowTime2 = false;
      }
      if(!lockLow2  && millis() - lowIn > pause){
        lockLow2 = true;
        Serial.print("Night  motion ended in the closet at ");
        Serial.print(now.hour(), DEC);
        Serial.print(":");
        Serial.println(now.minute(), DEC);
        TurnOffClosetNight();
      }
    }
  }
// Below this should all be for daytime running...
  else{ 
      // TurnHallOn will be for the hall, and should be called in the  first two "if" statements.
    if(digitalRead(pirHallPin) == HIGH){
      if(lockLow){
        lockLow = false;
        Serial.println("---");
        Serial.print("Motion  detected in the hall at ");
        Serial.print(now.hour(), DEC);
        Serial.print(":");
        Serial.println(now.minute(), DEC);
        delay(50);
        TurnOnHall();
      }
      takeLowTime = true;
    }
    if(digitalRead(pirHallPin)  == LOW){
      if(takeLowTime){
        lowIn = millis();
        takeLowTime  = false;
      }
      if(!lockLow && millis() - lowIn > pause){
        lockLow  = true;
        Serial.print("Motion ended in the hall at ");
        Serial.print(now.hour(),  DEC);
        Serial.print(":");
        Serial.println(now.minute(), DEC);
        TurnOffHall();
      }
    }
  
   // TurnClosetOn will be for  the closet, and should be called in the second two "if" statements.
    if(digitalRead(pirClosetPin)  == HIGH){
      if(lockLow2){
        lockLow2 = false;
        Serial.println("---");
        Serial.print(now.hour(), DEC);
        Serial.print(":");
        Serial.println(now.minute(),  DEC);
        delay(50);
        TurnOnCloset();
      }
      takeLowTime2  = true;
    }
    if(digitalRead(pirClosetPin) == LOW){
      if(takeLowTime2){
        lowIn = millis();
        takeLowTime2 = false;
      }
      if(!lockLow2  && millis() - lowIn > pause){
        lockLow2 = true;
        Serial.print("Motion  ended in the closet at ");
        Serial.print(now.hour(), DEC);
        Serial.print(":");
        Serial.println(now.minute(), DEC);
        TurnOffCloset();
      }
    }
  }
}

Downloadable files

Wire map, minus the sensors and Sensor Shield

This is my layout for wire placement. Use your skills or pictures from other sections in my project as a guide for the sensors and Shield.

Wire map, minus the sensors and Sensor Shield

This is my layout for wire placement. Use your skills or pictures from other sections in my project as a guide for the sensors and Shield.

Wire map, minus the sensors and Sensor Shield

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