Jumper: Arduino controlled animation

In this project, I have connected an Arduino to my computer and used a photoresistor to control an animation on the screen. Other sensors could have been used, but I chose a photoresistor because it feels like magic!!The photoresistor responds to changes in ambient light as my hand moves up and dow

Description: Jumper: Arduino controlled animation Rating: 3.5 Reviewer: Unknown ItemReviewed: Jumper: Arduino controlled animation

Poor Man's Colour Detector (Part 2) - The project

In this project we will be detecting the colour of 3 different Mega Blok colours (Red, Yellow and Green). We will be using an Arduino UNO connected to  2 LEDs (one Yellow and one Red LED) as light detectors, and an RGB LED to illuminate the subject. We will use a Photocell to account for varying ambient light levels. 

The signals from the LED light sensors will be sent to a Processing.org program via a Serial command. The computer program will make use of my Neural Network to classify the pattern of results and hopefully provide the correct colour "answer". The program should change the colour of the computer screen background to coincide with the colour of the Mega Blok.

The Video

We now have the power to control which LED we want to light up. This would look very nice with different coloured LEDs, but unfortunately I am stuck with the Yellow and Red ones from the Sparkfun Inventor's Kit.

Fritzing Sketch

    Image created using Fritzing : http://fritzing.com



Arduino Code

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/* ========================================================     Project : Photo resistor (Light dependent resistor) and LEDs      Author : ScottC     Created : 23rd May 2011 Description : Use a photo resistor to create an LED animation. ============================================================ */ //Define the analog pin the photo resistor is connected to (A0) int photoRPin = 0; void setup() {     //initialise the LED Pins as OUTPUTS     for (int i=4; i<14; i++){       pinMode (i, OUTPUT);     } } void loop(){     //Turn off all the LEDs before continuing     for (int i=4; i<14; i++){       digitalWrite(i, LOW);     }       /* Read the light level:      Adjust the analog reading values ranging from 120 to 600      to span a range of 4 to 13. The analog reading of 120      is when there is maximum resistance, and the value of 600      is when there is minimum resistance. These analog readings      may vary from photo resistor to photo resistor, and therefor      you may need to adjust these values to suit your particular      LDR. */     int photoRead = map(analogRead(photoRPin), 120, 600, 4, 13);          /* Make sure the value of photoRead does not go beyond the values       of 4 and 13 */     int ledPin = constrain(photoRead, 4, 13);          /* Turn the LED on for a fraction of a second */     digitalWrite(ledPin, HIGH);     delay(10);     digitalWrite(ledPin, LOW); }

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Description: Photo Resistor and LEDs Rating: 3.5 Reviewer: Unknown ItemReviewed: Photo Resistor and LEDs