This project is Christmas PCB developed for Julialabs PCB Challenge 2021, in which it shows the clothes that Santa Claus wears in very hot places.

• The board consists of an attiny85 connected to a cd4511 to control 14 three-core leds:

- 4 orange leds that go from the backlight.

- 5 blue LEDs that will light up the symbols on the shirt.

- 4 red LEDs to illuminate the front of the PCB

• The LEDs chosen are for low consumption applications due to being powered by a CR2030 battery, as they promise to deliver with 2mA the same brightness as a common LED consumes at 20mA, in which they are connected in series on the cd4511 to take advantage of the voltages from them and use fewer outputs.

• Is use attiny85 to create the alternation of colors, as the project is for turn on the orange leds first, then the red ones, then the blue , then the all the same time and then alternating the colors. Being able to use the button to switch the lighting order of the leds or wake up attiny85.

GitHub

Cart with components on mouser:

Mouser

#JULIALABSPCBCHALLENGE e #xmas2021