This is a dark activated color changing mood lamp. Its brains is a ATtiny85, but you could also use an Arduino.It has a light sensor which sense the light condition and decide when the room light is turned off.This then will light a RGB LED and slowly fade through different colors.
The brain of the lamp is Attiny85. The LDR and 10K resitor makes the light sensor.The sensor output is connected to the attiny analog pin-3.The sensor detect when the room is dark and tell attiny to give varying pwm signals to the RGB led.According to the different values of PWM signal the color of the RGB led changes.For power switch I used a sliding switch.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.