Sparkfun Sparkfun SEN-14520 1 pc(s)

If you need to add user input without using a key, then a capacitive touch interface could be the answer. The AT42QT1011 Sparkfun capacitive touch breakout offers a single, short-term capacitive touch button with easy-to-use digital I/O pins. The AT42QT1011 is a dedicated, capacitive single-button sensor chip. The chip monitors a conductive area for touch. As long as a contact (e.g. by a finger) is detected, the AT42QT1011 keeps the output line high. Otherwise, the line is kept low. All you need to do is provide a power source (1.8V?5V) and ground for the AT42QT1011 to work. A PAD pin is also available if you want to create your own external electrode. Unlike its sibling, the AT42QT1011 does not have an internal time-out, i.e. if you hold your finger on the breakout pad for a longer period of time, it remains switched on. The difference between the AT42QT1010 and the AT42QT1011 is small, but can make a big difference depending on the application in your project. This text is machine translated.