xmas_v3

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

HybridAir

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Description
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Components 8
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Description

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

Details

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.

Components

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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Project Logs

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PCB Ready
HybridAir • 11/12/2016 at 21:26 • 0 comments

As of today, I have finished the PCB design and sent it off to be manufactured.
Init
HybridAir • 11/10/2016 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.