SinuXVR / Attiny13A-LED-string

ATtiny13 controlled Christmas LED string

Features

• Uses a Charlieplexing technique to control 2 groups of LEDs using 2 wires
• Auto mode
• Static mode
• 9 blinking modes with 3 different speeds
• 10 to 30 LEDs support
• To switch to the next speed or mode, just power off and power on the MCU 1-2 times
• Current speed and mode are automatically locked after 30-60 seconds

Circuit diagram

• C1: 0.1 to 1uF
• R1: 10 to 20 uF

Flashing

-Ulfuse:w:0x79:m -Uhfuse:w:0xFD:m