Adafruit’s Circuit Playground update 1.0.1 is in Apple’s iTunes App Store! If you have 1.0 you automatically get the update for free. If you were on the fence, now is a great time to pick up our app! Here’s are the updates for 1.0.1
- Support for region-specific decimal & grouping separators
- Support for iPhone 3G & iOS 4.2
- Resistance fields now accept abbreviated input values
- Fixed bug where CapCodeCalc returned incorrect values for some input formats
- Fixed bug causing MultiResCalc & MultiCapCalc to sometimes load incorrectly
- Prevented modules from loading simultaneously when selected in fast succession
- Fixed bug where Datasheet Viewer’s page bar was sometimes positioned incorrectly
- Fixed bug causing ResCodeCalc to sometimes load with incorrect band mode
- + add’l tweaks/optimizations – and more to come!
As you can tell we’re working on updates and new features with this app. Best of all, when you buy the app you get a coupon for Adafruit store for the cost of the app!
“Very useful “by MakerMaker![]()
Incredibly handy for anyone working in electronics. Perfect for engineers and non-engineers alike.
“Just what this hobbyist needs” by JoshuaUnwin![]()
I love the clean look and focused tools in this app. It has earned a spot on my first home screen…
Circuit Playground simplifies electronics reference & calculation so you can have more fun hacking, making, & building your projects! This app is designed for both iPhone and iPad.
- Decipher resistor & capacitor codes with ease
- Calculate power, resistance, current, and voltage with the Ohm’s Law & Power Calc modules
- Quickly convert between decimal, hexadecimal, binary or even ASCII characters
- Calculate values for multiple resistors or capacitors in series & parallel configurations
- Store, search, and view PDF datasheets
- Access exclusive sneak peaks, deals & discounts at Adafruit Industries
All that, plus updates with additional features & enhancements – MANY NEW CALCULATORS AND TOOLS being added! Not on iOS? An Android version is in the works
For now, if you’d like to support a cool Android app and developer check out ElectroDroid. Please scroll down here and watch the HD video below about Circuit Playground and check out the screen shots!
Circuit Playground - Made with love by Adafruit, Collin Cunningham, Limor Fried, Daigo Kawasaki, Mosfet and Phillip Torrone

Printable catalog (PDF)




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"Support for iPhone 3G & iOS 4.2" YESSS! This seriously made my evening….yep the whole evening. Thank you for supporting the old school iOS!
Comment by Preston Fall — February 22, 2012 @ 3:25 am
Thank you VERY much for iPhone 3G/iOS 4.2 support! I just bought it from the App Store.
Out of curiosity, what did you have to do to be able to support the older device/OS?
Comment by Tanner Lovelace — February 22, 2012 @ 11:39 am
Me Three (on the iOS 4.2.1 support)!! THANK YOU!!
My iPod touch 2G is very happy, as am I.
Comment by Crawford — February 22, 2012 @ 4:41 pm