ATMega16 LEDs Snow Effect Circuit LED snow crystal

It really is a great led light application LEDs so fluently is moving a profit crystalline with mold has been excellent ATMega16 microprocessor 32 Edet output used to all the LEDs griplar connected software BASCOM-AVR 1.11.9.0 prepared with all encode scheme molded case also sprint layout pcb drawing is on.

The electronic circuit on the microcontroller creates 32 independent PWM channels. The electrical circuit of the screen – snowflakes is combined into 32 channels by mixed (parallel-serial) switching on of LEDs. The location of the LEDs on the screen was calculated in the simulator and their 12-beam symmetry was “watched” live. The unique software made it possible to create a bright, colorful, non-repetitive dynamic effect that will brighten up any holiday.

The snowflake is physically assembled on two printed circuit boards – on one – an ATMEGA16 microcontroller with 259 ultra-bright blue LEDs and on the other – transistor switches. The boards are connected by single-row connectors – combs. It is very convenient for installation and further maintenance.

One piece of advice: if you want your snowflake to be great, do not spend your money on LEDs. I recommend using it with a viewing angle of 180 degrees and a brightness of more than 0.5 candela. It works from an AC adapter 12V 500mA. The snowflake will look more noble if it is decorated with a decorative coating. It is made of PVC plastic and painted with spray car enamel in steel color.

I made several snowflakes in different colors. But in my opinion, the most spectacular one was made of blue LEDs. If you use red or yellow LEDs, you will need to change the resistances of the resistors marked with stars as follows: R1 – 560 ohms, R2, R4 … – 82 ohms, R3, R5 … – 160 ohms. The resistors for blue, green and white LEDs are shown in the diagram.