Winky Lights Projects
Completed Winky Lights Board
Name: Winky20 Board
CPU: PIC12C509
Status: Completed and Tested.
Summary: The Winky Lights Project uses differential coupled LEDs to maximize the number of LEDs per I/O lines.
Specifications
Dimensions: 0.8" x 1.0"
Power: 3 to 5 VDC
Schematics Multi20wink_sch
User's Manual InformationSheet

Description

The Winky Lights Project was a series of boards using differentially coupled LEDs to maximize the number of LEDs per I/O lines.
The idea was to provide inexpensive LED winky light driver boards for toys and other consumer products.

This model used 5 I/O lines to drive 20 LEDs. It is also programmable. Shorting an I/O pin to ground during power up will select one of 5 other sequences instead of the default random pattern.

Additionally, closing the contacts during power up will increase the delay between pattern repeats.