{"title":"SparkFun Spectrum Shield","handle":"sparkfun-spectrum-shield","url":"/products/sparkfun-spectrum-shield","description":"The SparkFun Spectrum Shield splits a stereo audio input into 7 frequency bands per channel using two MSGEQ7 graphic equaliser ICs. Read the amplitude of each band via your Arduino's ADC to create sound-reactive projects — from LED visualisers and light shows to sound-activated motors, relays, and more.\n\nThe shield features two 3.5 mm (1/8″) stereo jacks: one for audio input and one as a pass-through output, allowing you to connect it in-line between your audio source and speakers without interruption. Updated to the Arduino R3 layout.\n\nKey Features\n\n\nDual MSGEQ7 ICs – 7-band frequency analysis on both left and right channels\n\nStereo Input – 3.5 mm jack for audio source connection\n\nPass-Through Output – 3.5 mm jack to forward audio to speakers/headphones\n\nArduino R3 Layout – Standard shield form factor\n\nADC Readable – Band amplitudes read directly via Arduino analogue pins\n\n\nIdeal For\n\nAudio visualisers and LED light shows\nSound-reactive art installations\nMusic pattern detection\nSound-activated projects (motors, relays, lighting)\n\n\nPackage Contents\n\n1× SparkFun Spectrum Shield (headers not included)\n\n\n\nNote: Headers are not included and must be soldered on separately.\n\n\nResources\n\nHookup Guide\nMSGEQ7 Datasheet (PDF)\nSchematic (PDF)\nExample Code and Design Files (GitHub)\n","vendor":"SparkFun","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":12202,"title":"Default Title","sku":"SF-DEV-13116","price":60.53,"on_sale":false,"in_stock":true,"available_quantity":1,"option1":"Default Title"}]}