This is a very simple touch sensor switch that is build with the 555 timer IC. You just need to touch the metal plate and the relay gets energised and is kept in this state for about 100 seconds, then ...

Here is a great collection of touch switch circuits. A touch switch is an electronic device that enables us to control a circuit by simply touching a sensor. Simple touch switch circuit with 4011 – ...

This is a great lesson on how to get a simple touch sensor into your projects. This video appears to be one of a series of class visuals, and you can find several others on youtube under this account.

A simple four-component circuit allows a single I/O line from any microcontroller to sense the states of two capacitive touch sensors.

To achieve this invisibility the touch sensor circuit lines must be printed in sizes smaller than 5 microns. To give you a comparative example a human hair is 40 to 120 microns wide.

Conventional touch sensors for mobile devices draw power constantly because they work by generating an electrical field. A user’s finger distorts the field, and the sensor detects these distortions.

The iPhone 8 rumor mill continuesA flexible substrate can be used to fabricate the display panel and/or the touch sensor panel (referred to collectively herein as a “circuit panel”) of a ...