Published October 6, 2018 © CC BY-NC-SA

Katara Water Lamp

A water fountain equipped with LED lighting controlled by Bluetooth.

IntermediateWork in progressOver 1 day1,248

Things used in this project

Hardware components

Microchip ATmega328

Washer Pump

12V Car Universal Windshield Windscreen Washer Pump

Bluetooth Module

Software apps and online services

Autodesk Fusion

Arduino IDE

Hand tools and fabrication machines

Laser cutter (generic)

3D Printer (generic)

Story

Intro: Katara Water Lamp

A water fountain equipped with LED Lighting controlled by Bluetooth.

Katara is light water and frequency integration project, when the light hits the water just right, it creates beautiful visual effects that will leave you in an AWE.

This project is done by fablab Irbid`s Deputy Manager, Nadine Tuhaimer.

For more information visit her website : Nadine Tuhaimer

Step 1: Materials and Tools.

In case you want to make your own Katara, you'll need the following:

1. Bluetooth Module

2. LED Strip

3. 12V Car Universal Windshield Windscreen Washer Pump

4. Acrylic (black 6mm, Clear 3mm).

5. Wood 18mm (1x1 m) - I used MDF due to availability

6. 3D Printing Filament (PLA) - 970 grams

7. Clear Resin - 215ml

Step 2: Design and Manufacturing

1 / 7

3D Design Using Fusion360

We used Fusion 360 to do all the design related task. We wanted to design something that would look close to a water drop as Katra project includes water integration. Parts of the design are going to be CNC'd, others will be 3D Printed and Lasercut.

You can find the source file in the attachments.

3D printing:

A- FDM Printed Parts

We decided to print the back part of the box that carries the water tank and electronics.

After I saved the file as STL, I opened it with Cura. We used the following settings:

Layer Height: 0.1mm

Wall Thickness: 0.8mm Top/Bottom

Thickness: 0.8mm

Infill: 50%, infill dictates how rigid your print is

Print Speed: 60mm/s

Material Used: PLA Printing

Temprature: 215

Nozzle: 0.4mm

Print Bed Temprature: 60

Support was enables and set to everywhere becuase I have tracks for the acrylic.

Support Pattern: Zig Zag.

Support Density: 5%.

2. The next part we printed was the left and right joints. we also used Cura asn set the same settings.

3.funnel :

The funnel was self supported and didn't need any support. I used the same settings as before since I used the same material and the results were great.

B- SLA Printed Tank

We print the water tank using SLA since we want it to be water proof.

The printer available in the lab is the Form2 and we used clear resin to print the tank so we can see the water level.

CNC " Computer Controlled Machining"

We converted the 3D parts into 2D to cut them using the ShopbotCNC machine using the following settings:

The tool we used is the 1/4" endmill.

Spindle speed : 1400 r.p.m

Feed rate: 3.00 inch/sec

Plung rate: 0.5 inch/sec

Once all the parts were done, I had to do some sanding to get a perfect finish, then I painted it all in black, even the 3D Printed parts. The only thing I left in white is the funnel

Laser cut:

We designed really simple pieces, like the acrylic separation that would fit into the bottom box and separate between the water tank and electronics. used a 6mm black acrylic and the settings for cutting is:

Power 100 %

Speed 0.35.

Frequency 5000.

We also cut the outer frame using laser to give my project a shiny feel, using 3mm black acrylic and the settings for cutting is:

Power 100 %

Speed 0.8.

Frequency 1000.

Step 3: Electronics

1 / 2

The components of Katra board are :

Atmega328P X 1

Crystal 16MHz.

Pin headers.

voltage regulators X2. One will regulate the voltage from 12V to 5V, the other will regulates the voltage from 5V to 3.3V.

MOSFET x1

potentiometer 10 K X1

The schematic and the design of the board shown in the above pictures.

Input & Output Devices

Micro Servo motor" The tiny little servo can rotate approximately 90 degrees (45 in each direction)"

LED strip : In the code we use FASTLED Library.

Washer pump : it uns on 5V-12V. We only need 5V for Katra project.

We need the pump to keep operating all the time with certain pulses. And the same goes for the LED Strip and the Servo Motor. We use timer library. The Katra code is attached.

Step 4: Networking & Communications

We used HC-05 Bluetooth module, Then we wrote the code for the Bluetooth, it just checks if any data is received and compares it using a switch case code.

The above video shows the communication with the project through an Android Application calledBluetooth Terminal HC-05.

Schematics

Code

Katara Code

//Flash two LEDs at different rates using Simon Monk's Timer library
//http://www.doctormonk.com/2012/01/arduino-timer-library.html
//
//Jack Christensen 30Sep2013
//
//Beerware license: Free for any and all purposes, but if you find it
//useful AND we actually meet someday, you can buy me a beer!
#include <Servo.h>

#include <FastLED.h>
#include "Timer.h"                     //http://github.com/JChristensen/Timer
int pos=0;
int pump = 5;   // pump is connected to pin 5   
int pos1=170; 
int pos2=180; 
#define potentiometer A0 // to get the reading of the potentiometer and write it to the delay of the servo.                 
unsigned long PERIOD1 = 2;    

Timer t;                            
Servo myservo; 
#define LED_PIN     7 //Strip Data pin is connected to pin 10 of the arduino 
#define NUM_LEDS    30 // initially there were 30 LEDs in the strip, I cut the last 2 so there are only 28 now

CRGB leds[NUM_LEDS]; //initial values for the LED 
int x = 100;
int y = 50;
int z = 20;

unsigned long previousMillis = 0;        // will store last time Servo was updated
unsigned long previousMillisLED = 0;  // will store the last time the LED was lit

// constants won't change :
long interval;  // for the servo delay
long intervalLED = 20; // for the servo delay of the LED Strip
void setup(void)
{
    Serial.begin(9600); // for BT communication 
    FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);  myservo.attach(9); //define the LED Strip used
    pinMode(pump, OUTPUT);
    t.every(15,servo);  // call the servo function every 15 milliesecond
    t.every(25, LED); // call the LED function every 25 milliesecond
    t.oscillate(pump, PERIOD1, HIGH);
}

void loop(void)
{
    t.update(); //Update the timer
    if (Serial.available()){ // check if data is received 
      {
        char input=Serial.read(); 
       switch (input){
        case '1': // stop the servo
        pos1=0; 
        pos2=0; 
        break; 
        case '2':  // let the servo sweep 
        pos1=170; 
        pos2=180; 
        break; 
        case'3': // turn off strip 
        x=0; 
        y=0; 
        z=0; 
        break;
        case '4': //light the strip back 
        x = 80;
        y = 0;
        z = 125;
        break;  
        case '5':  // Make LED strobe slower
        intervalLED=30; 
        break;
        case '6':
        intervalLED=5;  // Make LED strobe faster 
        break;
        case '7': 
        intervalLED=20;  // Make LED strobe medium 
        break; 
       }
    }

    }
}

void servo(){ // Servo Function 
  interval= map (analogRead(potentiometer),0,1023,0,10); // change the delay of the servo depending on the potentiometer reading 
  for (pos = pos1; pos <=pos2; pos += 1) { // goes from 0 degrees to 180 degrees
    // in steps of 1 degree
    myservo.write(pos); 
  }// tell servo to go to position in variable 'pos'
    unsigned long currentMillis = millis();

  if (currentMillis - previousMillis >= interval) {
    // save the last time you blinked the LED
    previousMillis = currentMillis;                     // waits 15ms for the servo to reach the position
  
  for (pos = pos2; pos>= pos1; pos -= 1) { // goes from 180 degrees to 0 degrees
    myservo.write(pos);              // tell servo to go to position in variable 'pos'
    delay(5);                       // waits 15ms for the servo to reach the position
  }
  }
}

void LED(){
  memset(leds,(x,y,z),sizeof(leds)); //use this instead of for loop 
  FastLED.show();
  unsigned long currentMillisLED = millis();

  if (currentMillisLED - previousMillisLED >= intervalLED) {
    previousMillisLED = currentMillisLED;           
    // save the last time you blinked the LED
  memset(leds,(0,0,0),sizeof(leds));
  FastLED.show();  
}
}

Credits

Fablab_Irbid

6 projects • 32 followers

Contact

Thanks to Nadine Tuhaimer ..

Comments

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Katara Water Lamp

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Intro: Katara Water Lamp

Step 1: Materials and Tools.

Step 2: Design and Manufacturing

Step 3: Electronics

Step 4: Networking & Communications

Custom parts and enclosures

3D Design

Schematics

Katara board

Code

Katara Code

Credits

Fablab_Irbid

Comments

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Katara Water Lamp

Katara Water Lamp

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Intro: Katara Water Lamp

Step 1: Materials and Tools.

Step 2: Design and Manufacturing

Step 3: Electronics

Step 4: Networking & Communications

Custom parts and enclosures

3D Design

Schematics

Katara board

Code

Katara Code

Credits

Fablab_Irbid

Comments

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