Circuit Playground App Update – Magnetic Pole Detection

Circuit Playground for iOS has been updated with a new feature – magnetic pole detection! You can now determine the polarity of small magnets with your iPhone or iPad:

Warning: Strong magnets can permanently damage your device. To avoid damage, do not place rare earth magnets less than 8cm away from your device.

To detect a magnet’s pole, hold the magnet stationary about 30cm away from your device’s sensor position (as shown in the image). Slowly bring your device closer until a North or South polarity is displayed.

Head over to the App Store to grab the latest version of Circuit Playground.

Note: We wanted to add this feature on the Android version of the app as well, but unfortunately the magnetometer locations varied too greatly between devices.


Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

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