555 Design from the Inventor
555 Design from the Inventor
New 20-pin 555 ICs
Design Notes: New 20-pin 555 Timer ICs The necessity to fit the features of a 9-pin general purpose timer/oscillator into a new, low-cost 8-pin package mothered the key invention in the original 555 timer – cheap independence to power supply variation. This project demonstrates new possibilities for 555-timer designs with the contemporary sweet spot for …
Circuit Bending and e-textiles
Circuit Bending and e-textile When I saw Martin De Bie’s Textilo e-textile 555 oscillator I wondered if it could be extended to allow for body interactions with the pads using CMOS 555 timers in the spirit of the CrackleBox. I tested this CMOS 555 breadboard version. This informed suggested improvements to Textilo to Martin who …
555 Timer Resources
History A good and solid source of history is from Hans Camenzind himself He also wrote several interesting books. The history and detailed design considerations are covered in a book he kindly made available as a PDF file before his death in 2012: Circuits A convenient compendium of interesting circuits using the IC: Some more …