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The outer shell unscrews to reveal solder terminals on the inside of the plug
These are your standard 9 Volt alkaline batteries from Rayovac
4x Phillips Machine Screw - 4-40
Fast TTFF at low signal level
SparkFun Spectrum Shield Shields, Sparkfun Originals Weather The outer shell unscrews toThe Spectrum Shield enables your Arduino with the capability of splitting a stereo audio input into 7 bands per channel. You can then read the amplitude of each channel using the ADC on your Arduino allowing you to control everything from LEDs to motors, pumps to relays, or even fire, all with sound. With this shield you will be able to have almost any project be able to react to music or sound! The Spectrum Shield features the MSGEQ7 graphic
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