Timer circuits for LEDs?

jeffrey morris

Is it possible to create a timer circuit using a "555" timer chip that flash LEDs like the flashing red lights on a school bus?

PJAllen

Yes!

Here's a link for the datasheet.· Specifically, look on the last page -- astable oscillator.· I prefer the CMOS 7555 over the bi-polar "555".·

http://www.semiconductors.philips.com/acrobat_download/datasheets/ICM7555_ICM7555I_ICM7555C_1.pdf