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Questions tagged [trigger]

A type of oscilloscope sweep in which a *trigger*, or waveform characteristics matching a user-specified condition, will initiate the sweep. A trigger can also be an event, such as a pulse, which causes a circuit to begin performing some action.

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2
votes
1answer
508 views

Trigger switch using basic components

I am doing a project at a local fair which is one of those 'steady hands' games. I am adding a twist that if you touch the wire with the loop you are dragging through it once, distractions will start. ...
18
votes
5answers
29k views

Why edge triggering is preferred over level triggering?

I am trying to understand why edge triggering is preferred over level triggering. In my book it is not explained clearly. After searching online I came to know that edge triggering is insensitive to ...
2
votes
5answers
142 views

device for outputting HIGH when input have been HIGH?

I am looking for a device or circuit that outputs HIGH when a pushbutton has been pressed (if the button is pressed again it is supposed to still output HIGH), also, if possible, another pushbutton ...
6
votes
1answer
744 views

Capacitive touchscreen [duplicate]

I am doing project in which I want to perform read and write operation by using a capacitive touchscreen. What I know is I can trigger capacitive touch screen by: By using electromagnet as I heard ...
3
votes
2answers
691 views

Turning on and off car ignition - created two pulses?

I'm building a car DVR using a GoPro. The GoPro can be turned on by shorting out two pins on the gopro bus and then turned off by shorting out the same two pins. So when the car's ignition is turned ...
35
votes
4answers
122k views

What does edge triggered and level triggered mean?

I am studying 8085 microprocessor architecture and the word edge triggered and level triggered confusing me really very much. Can anyone explain me it in layman's words ? While studying the ...
4
votes
4answers
257 views

Breakaway Glass Triggering

I need to electrically "sense" when a brick is thrown through a vertically-oriented pane of breakaway glass, breaking it. My first thought was to paint a thin strip of clear conductive ink/paint/gel ...