Simple Quartz Xtal CES Generator. Simultaneously generates both Dr. Daniel Kirsch's favorite frequency of 0.5 Hz and Dr. Bob Beck's 4 Hz frequency. By John-Alfred Ullasmann, 2005-11-28.
Tiny13 CES Design: Based on the Tiny13 programmable microcontroller. By John-Alfred Ullasmann, 2006-07-06.
Tiny13 Sawtooth CES Design: Based on the Tiny13 programmable microcontroller. By John-Alfred Ullasmann, 2006-07-06.
Flashing LED CES: Similar to "Lo-Power" and "2 Chip" but with a flashing LED. By John-Alfred Ullasmann, 2006-07-27.