LED Flashers, Group 1 These are basic 555 LED flashers. All of them alternate between the red and green LED. Flasher 1 - This configuration of LEDs will work on all 555's. There are LEDs where both these colors are in the same package, in which ca

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Dice Oscillator

This circuit will oscillate at max speed using standard 555 calculation before slowing down and stopping.  This will create a dramatic effect for game circuits such as dice or heads / tails. 555/556 Design Data and Schematics

Includes the math and schematics needed to design with these chips.  Lifted out of the data book for the most part. 555 Fader 03 555/556 Design Data and Schematics Page 2

Includes the math and schematics needed to design with these chips. Lifted out of the data book for the most part. Compliments the 1st version. 2 555 timers 555 Heterodyne 02 Sequencer Bar Graph Style 01

A basic shift register approach to sequencing. 555 hetrodyne Sequencer Bar Graph Style 02

How to use a 4017 and 4071 to do this job. 555 no variation oscillator w duty cycle 555 Flashing Police Lights V11 555 Flashing Police Lights V20 LED Flashers, Group 1

These are basic 555 LED flashers.  All of them alternate between the red and green LED.

Flasher 1 - This configuration of LEDs will work on all 555's.  There are LEDs where both these colors are in the same package, in which ca 555 Triangle Generator 555 Linear Sawtooth

R1 should be large as practical, to prevent Q1 and Q2 from warming up.  The current mirror Q1 and Q2 should be as close as possible, to keep them at the same temperature. 555 speaker