Final Project¶
For my final project, I thought of something I needed, and when I looked around my room, I found that I needed a bedside lamp for my sleep. The special thing about this light is that it will work automatically by sensing the lightness of the room.
Design¶
At the beginning, I designed the structure of the lamp by using MakerCase and Fusion 360. By using MakerCase, I chose the shape and dimensions, while on Fusion 360 I designed the pattern, which is a square pattern.
Material¶
For the material, I chose to use 6mm thick acrylic to have a pretty cut shape, as well as a strong and heavy structure to prevent any crashes. I painted it black to match any place. To diffuse the light, I used 3mm thick milky white acrylic.
Fabrication¶
To fabricate the lamp, I used a laser cutting machine, and I also used glue to connect all the pieces with each other.
Electronics¶
Moving to the electronic part, I used an Adafruit Feather to control the system. I used an addressable RGB LED and a phototransistor (LDR sensor). The lamp has three different levels of brightness, and the sensor will read the surrounding lightness and change the level of brightness based on that.
Code¶
// Include the necessary library
#include <Adafruit_NeoPixel.h>
// Define the pin for the LED strip
#define LED_PIN 6
// Define the number of LEDs in the strip
#define NUM_LEDS 60
// Define the pin for the light sensor
#define LIGHT_SENSOR_PIN A0
// Define the brightness levels
#define BRIGHT_LEVEL 255
#define MID_BRIGHT_LEVEL 100
#define DARK_LEVEL 0
// Create a NeoPixel object
Adafruit_NeoPixel strip(NUM_LEDS, LED_PIN, NEO_GRB + NEO_KHZ800);
void setup() {
// Initialize the NeoPixel strip
strip.begin();
strip.show(); // Initialize all pixels to 'off'
}
void loop() {
// Read the value from the light sensor
int lightSensorValue = analogRead(LIGHT_SENSOR_PIN);
Serial.println(lightSensorValue);
// Adjust the brightness based on the light sensor value
if (lightSensorValue > 800) {
// Bright outside, turn off the LEDs
adjustBrightness(DARK_LEVEL);
} else if (lightSensorValue > 500) {
// Somewhat dim outside, set to mid brightness
adjustBrightness(MID_BRIGHT_LEVEL);
} else {
// Dark outside, set to high brightness
adjustBrightness(BRIGHT_LEVEL);
}
// Delay for a short time
delay(100);
}
void adjustBrightness(uint8_t brightness) {
// Set the brightness of all LEDs
for (int i = 0; i < NUM_LEDS; i++) {
strip.setPixelColor(i, strip.Color( brightness, brightness, brightness));
}
strip.setBrightness(brightness);
strip.show();
}
