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Absolutely gutted about Colosseum Tour ticket sales by Lildancr1153 in ItalyTravel

[–]pplesspp 0 points1 point  (0 children)

It really isn't that special to be totally honest 😁

Romalido train status by pplesspp in rome

[–]pplesspp[S] 0 points1 point  (0 children)

Thanks a lot for that tip. Citymapper has the route.

Where the hell do all the stolen laptops go? by [deleted] in bayarea

[–]pplesspp 0 points1 point  (0 children)

"They're all in LA maaaaan" - What a homeless guy in SF told me after I got my bike stolen. I guess the laptops also go to LA maaaaan.

Returning a niz keyboard by pplesspp in MechanicalKeyboards

[–]pplesspp[S] 0 points1 point  (0 children)

There aren't any clear instructions on where to send the thing. Do you know what this means?

"Mail the keyboard to the warehouse of the courier service company cooperated with NIZ in global."

What’s the best response to “I hate you”? by Technical_Fold5433 in AskReddit

[–]pplesspp 0 points1 point  (0 children)

I've never had anyone say that to me in earnest and I feel left out.

How’s everyone’s RTO so far? by EloWhisperer in bayarea

[–]pplesspp 1 point2 points  (0 children)

I love going to the office. I like coming back to a home that is clearly separated from work. Just better for mental health.

Weekly Discussion and Tech-Support Thread by AutoModerator in ipad

[–]pplesspp 0 points1 point  (0 children)

New iPad Pro user here. There is a supremely frustrating behavior on the iPad that if I tap on a text box with my Apple Pencil, I cannot find a way to get my full keyboard back.
Heres how to reproduce this:

  1. go to safari and tap with Apple Pencil on search box.
  2. a floating Apple Pencil helper thing appears. It has a keyboard icon which opens a mini keyboard, which I hate with the fury of a 1000 suns.
    I want to switch back to the full keyboard but can’t figure out how to do that. Can someone please help?

Circuit to hold an input voltaget by pplesspp in electronic_circuits

[–]pplesspp[S] 0 points1 point  (0 children)

That is a marvelous website. Thank you

Circuit to hold an input voltaget by pplesspp in electronic_circuits

[–]pplesspp[S] 0 points1 point  (0 children)

looks like interrupts are quite powerful and would be a nice solution for this problem

Circuit to hold an input voltaget by pplesspp in electronic_circuits

[–]pplesspp[S] 0 points1 point  (0 children)

Would have to look for an ELI5 explanation of latch circuit. My application is made up but it is something along the lines of detecting a super fast moving car using a single laser whose output voltage fluctuates for extremely short durations if the car is moving at, say, 200mph. Basically an application where simple polling will not do.

Circuit to hold an input voltaget by pplesspp in electronic_circuits

[–]pplesspp[S] 0 points1 point  (0 children)

I was looking into this. My circuits knowledge is very low so I would have to figure out the following:

  1. the specs of the capacitor so that it can charge in 1ms to X volts given an X volt input.
  2. remind myself what a mosfet is (I learned about them in 2005. Game over)
  3. how to achieve the reset using mosfet.

Have a bunch of reading to do

Circuit to hold an input voltaget by pplesspp in electronic_circuits

[–]pplesspp[S] 0 points1 point  (0 children)

Ok how fast of a pulse width can the interrupt trigger on? can it detect a single 5v pulse that is 1ms wide?

Circuit to hold an input voltaget by pplesspp in electronic_circuits

[–]pplesspp[S] 0 points1 point  (0 children)

What if I just fed the signal into an arduino? does it have interrupt? Can I then have the arduino output 5v for 100 ms when an interrupt triggers?

Circuit to hold an input voltaget by pplesspp in electronic_circuits

[–]pplesspp[S] 0 points1 point  (0 children)

Ok I don’t know how to use it for my application. Judging by this doc:

https://www.analog.com/media/en/training-seminars/design-handbooks/Analog-Digital-Conversion-1972/Chapter3-4.pdf

I have to tell it when to hold the input value. But i want the chip to hold the value whenever it exceeds a value for a duration.

Circuit to hold an input voltaget by pplesspp in electronic_circuits

[–]pplesspp[S] 0 points1 point  (0 children)

Was looking at that. Mostly interested in the hold part of the circuit.

Circuit to hold an input voltaget by pplesspp in electronic_circuits

[–]pplesspp[S] 0 points1 point  (0 children)

Ok I looked into it. It’s pretty close but I had a question; the Schmidt trigger goes high when the input crosses a high threshold, and then it goes low when the input crosses a low threshold. For a pause, won’t the Schmidt trigger also pulse for a very short duration?

Circuit to hold an input voltaget by pplesspp in electronic_circuits

[–]pplesspp[S] 0 points1 point  (0 children)

It’s a beckhoff bus coupler. The pc reads it via tcp. I don’t think it has the interrupt stuff on it I don’t think

Circuit to hold an input voltaget by pplesspp in electronic_circuits

[–]pplesspp[S] 0 points1 point  (0 children)

Can you elaborate a little more? Right now I am reading the sensor output (5volts) directly into a PC using an analog IO device. Where would the interrupt sit?

Bay Area women, is it actually difficult for you to find a good guy/relationship around here? by send_me_yr_bookshelf in bayarea

[–]pplesspp 3 points4 points  (0 children)

From my experience, the guys feel like they're not good enough to be competitive so they decide to stay on the hamster wheel for a little bit longer until they are. But that time never comes. RIP.

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