Circuit Playground simplifies electronics reference & calculation – so you can have more fun hacking, making, & building your projects.

• Calculate component values for Op Amp, 555, RC Filter, Resistor Divider circuits & more
• Decipher resistor & capacitor codes with ease
• Calculate power, resistance, current, and voltage with Ohm's Law & Power Calculators
• Quickly convert between decimal, hexadecimal, binary or ASCII characters
• Calculate values for multiple resistors or capacitors in series or parallel
• Pinout diagrams for widely-used ICs, connectors, & boards
• Find color for LED wavelength
• Detect a magnet's polarity
• Show off your project by submitting pics to Adafruit's Show & Tell
• Access exclusive deals from Adafruit Industries

All that, plus more functions & enhancements to come!

What’s New

Version 2.1.3

- Ohm's Law module: now the default state shows value symbols instead of units
- Capacitor codes: fixed problem entering decimal values
- Minor bug fixes and improvements

Ratings and Reviews

4.2 out of 5
5 Ratings

5 Ratings

- qwerty22 - ,

Great App.

Works great for me. I see the views in the other comments but I think it is fine how it is. Does everything I need and more. The only thing I would add is the common data sheets idea.

JasonNolan ,


The content is fine. Just a handy version of content you can find online. It crashes a lot though. I’ll give it 3 stars when it stops crashing.

James 11 1964 ,

Very handy app

Great app! Handy, everything I need in one spot. PDF data sheet storage is a great feature as well


Adafruit Industries LLC
34.3 MB

Requires iOS 9.3 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating
Rated 4+
© 2017 Adafruit Industries


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