SparkFun Audio Plug - 3.5mm Connectors Solar You can use these for

You can use these for tap or knock sensors pretty easily by reading the voltage on the output

there are four LEDs that

If you have a power supply with a barrel jack and want to plug it into a breadboard

Current 12mA

Standard 22 AWG solid Yellow hook up wire

SparkFun Audio Plug - 3.5mm Connectors Solar You can use these forThis is a simple 3. 5mm TRS stereo audio jack with a screw on plastic shroud. These are great for projects that plug into headphone jacks. Stereo plugs can also be used for carrying serial comm connections! The outer shell unscrews to reveal solder terminals on the inside of the plug. Solder on your wires and crimp the strain relief to make a finished, professional looking cable.