SparkFun Capacitive Touch Breakout - AT42QT1010 Capacitive, Sparkfun Originals Systems & Accessories They are ½" long and

They are ½" long and come in packs of ten

but not to populate it

10uF 25V Capacitor

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This is your basic spool of lead free solder with a water soluble resin core

SparkFun Capacitive Touch Breakout - AT42QT1010 Capacitive, Sparkfun Originals Systems & Accessories They are ½" long andIf you need to add user input without using a button, then a capacitive touch interface might be the answer. The AT42QT1010 SparkFun Capacitive Touch Breakout offers a single capacitive touch button with easy to use digital I O pins. The AT42QT1010 is a dedicated, single button capacitive sense chip. The chip handles monitoring a conductive area for touch. As long as a touch (e. g. from a finger) is detected, the AT42QT1010 keeps the output line high.