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555_Timer_free

New - 555 Timer Free


  • 3 astable modes
  • monostable (one-shot) mode
  • duty cycle indicator
  • can tweak R & C values
Astable - Duty cycle > 50% Astable - Duty cycle = 50%
Astable - Duty cycle > 50% Astable - Duty cycle = 50%
Astable - Duty cycle < 50% Monostable (one-shot)
Astable - Duty cycle < 50% Monostable (one-shot)

Main window of 555 Timer Free

color codes

One of four timer modes

surface mount devic

555 Timer Free v1.1 download [May 29, 2011]

This application can be downloaded for free, and can be used indefinitely.

This application or its setup file, or any portion thereof, may not be redistributed by any means whatsoever, except with the expressed permission of Schematica Software.


Compatible with Windows 7, Vista, XP, 2K


555 Timer PRO

EXE setup file:

Timer_Free_Setup.exe 1.62MB 555 Timer Free

Archived setup file:

Timer_Free_Setup.zip 1.60MB free 555 timer


Please report any dowloading problems to support@schematica.com.