Light & Interactivity : 💡 Final Floor Fixture (Floor Entrance) part II Week 7

First, we started testing my connection to the HUB. We connected to column 6, the success command response was definitely a great way to start the morning.

lastscan": "2022-03-04T15:51:22

"31": {

"state": {

"on": true,

"bri": 254,

"hue": 8417,

"sat": 140,

"effect": "none",

Our light was #31 - We checked out a Philips Hue lightbulb from the ER (I7549). Light #31 became ChriLo

-------

https://vimeo.com/showcase/6916443 - The videos were super helpful

HUE control - We had to capture the light from another HUB.

Troubleshooting the Connection with WPA - it took a bit a time to connect, I had to go back to the NYU computer registration website to make sure my Arduino was connected. It was connected, I worked on the connection the day before but only after visiting the site website again I was able to connect. Not sure if it this was an unrelated event but it worked.

Arduino Address:

MAC: 4C:11:AE:91:81:E4

Light Design/Construction

Christina and I are both interested in sustainability so we used mostly paper materials we found on the Junk Shelf. One man's trash is another man's treasure. In this case the treasure is a functioning lamp.

After our research we came to the conclusion that the space we got assigned is very hectic and difficult to focus. We wanted to work on a standing light, to create some focus on the plants and create a little Zen garden effect.

                                             

Arduino: We wanted to use a potentiometer and a switch. The potentiometer allows us to dim the light and the Switch is to turn on/off the light.

• Board:  To keep the components on I soldered the potentiometer to the wires.

Useful links :

https://itp.nyu.edu/physcomp/labs/labs-arduino-digital-and-analog/lab-sensor-change-detection/

https://vimeo.com/showcase/6916443

Testing the potentiometer

void setup() {

  Serial.begin(9600);

}

 

void loop() {

  int analogValue = analogRead(A0)/4; // read the sensor value

  Serial.println (analogValue);          // send the value serially as a binary value

}

---------

Program the Microcontroller to Read a Sensor Threshold Crossing // tipping point

int lastSensorState = LOW;   // sensor's previous state

int threshold = 512;   // an arbitrary threshold value

 

void setup() {

  Serial.begin(9600);

}

 

void loop() {

  // read the sensor:

  int sensorState = analogRead(A0);

 

  // if it's above the threshold:

  if (sensorState >= threshold) {

    // check that the previous value was below the threshold:

     if (lastSensorState < threshold) {

        // the sensor just crossed the threshold

        Serial.println("Sensor crossed the threshold");

     }

  }

  // save button state for next comparison:

  lastSensorState = sensorState;

}

• Code: Special thanks to Wasif you helped us develop the code

//ER LIGHT BULB I744

// LIGH #31 NAME ChriLo

#include <SPI.h>

//#include <WiFi101.h>

#include <WiFiNINA.h>

#include <ArduinoHttpClient.h>

#include "arduino_secrets.h"

char hueHubIP[] = "172.22.151.181";  // IP address of the HUE bridge

String hueUserName = "e0pYvbu1tK1yPgiIWb08zCKzJhAuoDHR2fHffeMZ"; // hue bridge username

WiFiClient wifi;

HttpClient httpClient = HttpClient(wifi, hueHubIP);

long lastRequest = 0;

void setup() {

  //Initialize serial and wait for port to open:

  Serial.begin(9600);

  // attempt to connect to Wifi network:

  while ( WiFi.status() != WL_CONNECTED) {

    Serial.print("Attempting to connect to WPA SSID: ");

    Serial.println(SECRET_SSID);

    // Connect to WPA/WPA2 network:

    WiFi.begin(SECRET_SSID, SECRET_PASS);

  }

  // you're connected now, so print out the data:

  Serial.print("You're connected to the network IP = ");

  IPAddress ip = WiFi.localIP();

  Serial.println(ip);

}

int currentBrightnessLevel;

int previousBrightnessLevel = -1;

bool hasChanged = false;

void loop() {

  delay(2000);

  // Reading value from potentiometer

  // Threshold into 10 buckets

  int potentiometer = analogRead(A0);

  currentBrightnessLevel = map(potentiometer, 0, 1023, 0, 20); // FIXME this might be a mapping issue for full brightness

  

  // If no previousBrightness is set, set it

  if (previousBrightnessLevel == -1) {

    previousBrightnessLevel = currentBrightnessLevel;

  }

  

  // Detect change in state

  hasChanged = currentBrightnessLevel != previousBrightnessLevel;

//Debug  

//  Serial.print("potentiometer: ");

//  Serial.println(potentiometer);

//  Serial.print("currentBrightnessLevel: ");

//  Serial.println(currentBrightnessLevel);

//  Serial.print("previousBrightnessLevel: ");

//  Serial.println(previousBrightnessLevel);

//  Serial.print("hasChanged: ");

//  Serial.println(hasChanged);

  // Send a request every 3000 (3 seconds)

  if (millis() - lastRequest > 5) { // time it takes 

    // Don't do anything if state hasn't changed

    if (!hasChanged) {

      return;

    }

    // Dim Light & Update Previous & Current

    int brightness = currentBrightnessLevel * 20;

    dimLight(brightness);

    previousBrightnessLevel = currentBrightnessLevel;

    

    lastRequest = millis();

  }

}

void dimLight(int brightness) {

  Serial.println("Dimming Light: ");

  // HTTP Request - Light API

  String request = "/api/" + hueUserName;

  request += "/lights/31/state";

  // JSON Request - Message Body

  String contentType = "application/json";

  String hueCmd = "{\"on\": true, \"bri\": BRIGHTNESS}"; // {"on": true, "bri": BRIGHTNESS}

  String bri = String(brightness);

  hueCmd.replace("BRIGHTNESS", bri);

  // Debug

  // see what assembled to send

//  Serial.print("PUT request to server: ");

//  Serial.println(request);

//  Serial.print("JSON command to server: ");

  // HTTP Request

  // make the PUT request to the hub

  httpClient.put(request, contentType, hueCmd);

  // HTTP Response

  //read the status code and body of the response

  int statusCode = httpClient.responseStatusCode();

  String response = httpClient.responseBody();

//  Serial.println("");

//  Serial.println("Response");

//  Serial.println(response);

}

FINAL