An LED matrix display Christmas tree ornament. The successor to 2015's xmas_v2.

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A minimal, snowflake-shaped LED matrix Christmas tree ornament. An ATTiny24 displays scrolling messages on a charlieplexed 5*8 LED matrix display.

An ATTiny24 controls all aspects of this device. It scrolls up to 5 unique, 18 byte long messages on its charlieplexed LED matrix display. The display is driven directly by the ATTiny using 7 pins, with no other supporting hardware. It is powered by a 3V coin cell, and uses an average of 8 mA during normal operation, and 5 uA while sleeping. The button is used to switch between displayed messages, and to enable/disable sleep mode.

  • 1 × ATTiny24 Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
  • 1 × SMD Tactile Button Switch 6*6mm
  • 40 × 0603 SMD LEDs
  • 7 × 47 ohm 0603 SMD resistors
  • 1 × .1uf 0805 SMD capacitor

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  • PCB Ready

    HybridAir11/12/2016 at 21:26 0 comments

    As of today, I have finished the PCB design and sent it off to be manufactured.

  • Init

    HybridAir11/10/2016 at 03:21 0 comments

    All prototyping and programming for the xmas_v3 has been completed as of a couple days ago. As always, small and quick updates to this project are posted on my Twitter, and overall status updates here.

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