How the Resistance and the AC Hum touch sensor (button-switch) works

Link to page: http://pcbheaven.com/wikipages/How_a_Touch_Button_works/

In this theory page, i explain how the touch switches (buttons) work. I cover various methods, the resistance touch sensor, the AC Hum touch sensor and the capacitance touch sensor. I extensively cover the capacitance touch sensors. Also, i explain how a capacitance touch sensor can be used to make buttons that are covered under non-conductive materials, such as plastic, wood, plexiglas etc.

This video is the first part, in which i explain the resistance and the AC Hum touch sensing techniques.

Category:

Science & Technology

Tags:

• electronic
• circuit
• pcb
• schematic
• diy
• project
• tutorial
• educational
• how-to
• how
• to
• do-it-yourself
• do
• it
• yourself
• electronics
• technology
• theory
• touch
• sensor
• switch
• button
• resistance
• resistive
• AC
• hum
• voltage
• detector

[Ivultorky]

cheers for the awesome video :)

hopefully touch switches will become a more popular choice as people get used to being delicate with more touch screens around.. i think they're pretty cool..

[pcbheaven]

@Ivultorky i first began this tutorial only for capacitance sensors, but it was like... half. So i decided to include the resistance. The AC hum is because many people confuse it with capacitance touch. I hope in a few hours i have the video ready.

[HamRadio2008]

Nice!