Description
This is a calculator designed and dedicated to calculating the resistor and capacitor values for the popular NE555 square wave generator.This is unlike the other calculators you will find floating around. This calculator generates actual, usable component values; values that are found in your kit. No longer will you be asked to provide a 2546.74856Ω resistor.
This calculator will also allow you to tell it which components to use, based on what you have available. Don't have a 10KΩ resistor, or a 4.7 nF capacitor? Remove it from the list and you'll never be asked to use one.
This is a brute force calculator. Meaning it calculates every possible combination and if it comes within 1% of your desired frequency it will display it as a result. If battery concerns or the speed of the results is of concern, users can opt to have the calculations done via remote server. Your custom component list is still used for this process, but results can be generated in a fraction of the time.
Feedback and feature requests are always welcome. No comment too sour!
Explanation of permissions:
Full Internet access required for-
*Ads
*Remote calculation of values
Full source of version 1.7 can be found at:
http://stuff.foamcoffee.com/android/Calc555.tar.gz
Franz
Nov 5, 2011 11:58:08 PM
Sweet and simple Nicely done....
Terry
Oct 22, 2011 6:37:26 AM
Great app! Very useful!!!!
John
Sep 8, 2011 12:30:39 AM
Love it. Wish I had it years ago.
Borna
Aug 15, 2011 12:05:16 PM
Very useful app but can't close app!
Dan
Aug 9, 2011 4:43:12 PM
This is a good start to a helpful app. It woud be made better if it could expand larger to see circuit. Also would be nice to go back