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Adafruit Standalone Momentary Capacitive Touch Sensor Breakout

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Quoting product code: N51DQ

£6.49

About this product

Overview

  • No microcontroller required - power with 1.8 to 5VDC and touch the pad to activate the sensor
  • Toggle output - touch-on then touch-off
  • Infinite time-out built in but can be modified to add sensor time-out by cutting TIMER jumper and connecting a resistor-capacitor to the TIME pin - see datasheet for details

Product overview

• No microcontroller required - power with 1.8 to 5VDC and touch the pad to activate the sensor• Toggle output - touch-on then touch-off• Infinite time-out built in but can be modified to add sensor time-out by cutting TIMER jumper and connecting a resistor-capacitor to the TIME pin - see datasheet for details

This breakout board is the simplest way to create a project with a single "momentary" capacitive touch sensor. No microcontroller is required here - just power with 1.8 to 5.5VDC and touch the pad to activate the sensor.

When a capacitive load is detected (e.g. a person touches the sensor-pad area) the red LED lights up and the output pin goes high. 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 the more-responsive "fast mode" which draws about 0.5mA. If you need ultra-low (~50uA) power usage, the mode jumper can be cut on one side & soldered closed on the other to fix it into that mode. Check the datasheet for specific power usage measurements.

Comes with a fully assembled board, and a small stick of 0.1" header so you can solder and plug it into a breadboard. For additional contacts, we suggest using copper foil, then solder a wire that connects from the foil pad to the breakout. 2
For additional contacts, Adafruit suggest using copper foil, then solder a wire that connects from the foil pad to the breakout.

Adafruit also put to together a useful tutorial to help adding your touch sensor to your project!

Hello! I want to use this sensor as a momentary switch. All it needs to do is connect a circuit the same way a physical momentary switch would. Is this possible with this sensor straight out of the box or do I need some additional wiring and componentry?

Asked by: Benjamin
it is important to note that as a retail only company we are unable to assist with any design projects or queries, or advise on specific products that may be required for your purpose.
Answered by: Dominic
Date published: 2017-01-27
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