This breakout little board is the easiest and quickest way to create a project with a single "toggle"
capacitive touch sensor. No microcontroller is required here - just power with 1.8 to 5.5VDC and
touch the pad to activate the sensor.
This sensor is a toggle output type: touch-on then touch-off. That means that when a capacitive load
is detected (e.g. a person touches the sensor-pad area) the red LED will alternate turning off and the
output pin will go high or low, respectively. This sensor is good for a project where you want to
activate something on the first touch, then deactivate it when touching again, like a switch. You can
also solder a wire to the middle pad and create your own capacitive pad if the built-in one isn't
suited to your project.
If you want to save power, the LED can be disconnected from the output pin (cut the trace between
the jumper marked as such). We designed this breakout to have infinite time-out. The chip does
support having the sensor time-out, so for example, if something is turned on, it will eventually turn
off on its own. If you'd like to use this mode, cut the TIMER jumper and then connect a
resistor/capacitor to the TIME pin. Check the datasheet for how to calculate the TIME pin to match
your desired timeout.
A small stick of 0.1" headers acompanies this breakout so you can solder and plug it into a
breadboard.
