555 Timer Tool
Free AppAbout 555 Timer Tool
This is a tool to help electronics hobbyists easily select component values for the ubiquitous 555 Timer chip.
You simply enter the frequency (or alternatively the delay period) that you want your 555 timer chip to run at - and an initial timing capacitor value - then the 555 Timer Tool calculates a list of the best combinations of other components that meet your requirements.
As a convenience, you can also use touch gestures to snap component values up or down to the next preferred value. To do that just stroke the values displayed on the circuit diagram. Stroke upward to adjust upwards, or stroke down to adjust downwards.
The preferred value range that values are snapped to is selected by choosing "Preferences" from the options menu.
For example, suppose you wanted a 555 timer to oscillate at 440 Hz (the A above middle C on the piano keyboard) then just:
- click the f (frequency) button on the circuit diagram, enter 440 then press the OK button
- click the C1 button on the circuit diagram, enter 47, then press the nF button, then press the OK button.
The 555 Timer Tool calculates combinations close to 440 Hz and updates the values on the circuit diagram with the closest combination.
How do you know to key in 47 nF as the initial value for C1? ...well, you don't - but you have to start somewhere and 47 nF is middle of the road!
All Application Badges
Free
downl.
downl.
Android
2.3.3+
2.3.3+
Bug
buster
buster
Android app
App History & Updates
What's Changed
- Fixed the duty cycle calculation
- Enabled move to external storage
- Fixed the duty cycle calculation
- Enabled move to external storage
More downloads 555 Timer Tool reached 100 000 - 500 000 downloads
More downloads 555 Timer Tool reached 50 000 - 100 000 downloads
Version update 555 Timer Tool was updated to version 1.03
More downloads 555 Timer Tool reached 50 000 - 250 000 downloads
What are users saying about 555 Timer Tool
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I like this apps
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works good,
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thanks
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BOOM
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Sr.
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47nf?? "Clowns to the left of me- JOKERS TO THE RIGHT. NOW I.M STUCK IN THE MIDDLE WITH YOU!" :-) 47 IS SWEET KNOWLEDGE F9R SOME 1 WHO REFUSES SCHOOL. I AM AN INTERNET CHILD. SCREW SCHOOL & ALL THEIR IGNORANCE. SELF MADE PPL ROCK! TY FOR APP.. BTW(555IC TO PULSE NEO MAGNETS) SSHHHHH. ITS A SECRET.... school WILL NOT ACKNOWLEDGE RADIANT ENERGY/WATTS. TESLAS ROLLING OVER. SCHOOL IS FOR ROBOTS. A SLAVE FACTORY.
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by C####:
by C####:
Would like to select duty cycle and the ability to lock some parameters. Like set 1khz 50% duty cycle and have it calculate capacitor and resistors.
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by C####:
Nice app
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No hassle :)
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Perfect ,good .
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by N####:
Good
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Sai
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Thanks for the effort... this very usefull for design before start soldering...
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Limited options of input.
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i make harmonium used ic 555.in small box.touch and play...
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!!!!!buenisimo!!!!....
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Can't seem to get it to work on Nexus 7
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Need monostable schematic and calculations.
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All hail the multivibrator!
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I needed
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by S####:
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555 chips are cheap and reliable and this will help to plan a project
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Did not do anything
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by S####:
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good
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by K####:
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This is great training tool for electronics.
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Excellent
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thanks
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Perfect ,good .
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by E####:
works good,
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by G####:
I like this apps
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Glad to see some android apps for the electronics and microchip people. Thanks dev!
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Very handy even these days
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Need update with bypass diode for dutycycle greater than 50%
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Sem dúvidas muito útil. Mostra às combinações de componentes possíveis
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It looks great
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Got to get this one
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Although, it seems that the calculation of the duty cycle are incorrect.
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Very useful app, great. Thanks dev
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by M####:
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Thanks :)
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Boo
by Q####:
i make harmonium used ic 555.in small box.touch and play...