555 Timer Project Design Software for Beginners and Experts

22 timer design wizards - 14 for the astable mode, 8 for the monostable mode
input circuitry - for gating an astable or triggering a monostable. Input categories are switch, touchplate, continuity, liquid level, AC detect, light, sound, and temperature.
counter wizards - facilitate divide by/count to strategies using common binary and decade counters
output circuitry - that can be activated by the 555 timer. Includes switching loads, driving motors, driving LEDs, lamps, numeric and bargraph displays, and audio, ultrasound and RF outputs
555 Timer
This program allows you to calculate Resistor and Capacitor values for both Astable and Monostable modes.