During the 2006 Maker Fair the Graffiti Research Lab was demoing their LED Throwies and Pat & Ward Cunningham were demonstrating Cybords. While talking someone made a comment about wanting to give the Throwies a voice. Ward & Pat took a simple ATtiny45 chip and added it to the mix to give the LED a voice. Computerized Throwie Demo
Step 1: Get the Supplies
<ul><li>10mm Diffused LED
<li>Programed ATtiny45 Computer
<li>CR2032 3V Lithium Battery
<li>1/2" Dia x 1/8" Thick NdFeB Disc Magnet, Ni-Cu-Ni plated
<li>1-inch wide Strapping Tape
For a more complete parts list see: LED Throwies instructables page
Step 2: How We Program the Chip
Step 3: Bend the Leads
We bent off the middle leads so that they wouldent get in the way.
Step 4: Solder the Leads
The longer LED lead should be soldered to the 'vcc' (power) and 'rst' pins of the chip. This shorts the chip reset and gives it a more secure conection. Make sure to reference the wiring diagram in this step to get the pins correct.