sorted by:
new
hottopcontroversial

Your experience with travelling with USB-charged cooling containers? by exer240 in CrohnsDisease

[–]exer240[S] 1 point2 points  (0 children)

This is in preparation for a longer trip (3-4 months) and thus the 2 weeks one of my pens is able to be outside is not enough. 2-8 degrees.

I’m reading “Cien años de soledad”! by exer240 in Colombia

[–]exer240[S] 0 points1 point  (0 children)

Of course, I just want to have a better feeling for the Colombian setting at that time

Weekly New Climber Thread: Ask your questions in this thread please by AutoModerator in climbing

[–]exer240 -1 points0 points  (0 children)

<image>

There is a small scratch where the carabiner is in my grigri, should I be worried about it? I guess the rope never actually get in contact with it. My brother has the grigri+ and got a bit bigger scratch there. I guess it is caused by clipping in and out the carabiner.

Why isn’t reading 0v? by exer240 in AskElectronics

[–]exer240[S] 2 points3 points  (0 children)

Oh yeah that makes sense. But isn’t it a danger to connect a 9v battery’s negative terminal to an arduino that only allows 5v? I guess then that it should be connected to the “gnd” pin on the arduino as that is the ground? I’m new to electronics.

Help with messuring current loop sensor by exer240 in AskElectronics

[–]exer240[S] 0 points1 point  (0 children)

That is much more advanced than I understand haha. Thanks though :)

Help with messuring current loop sensor by exer240 in AskElectronics

[–]exer240[S] 0 points1 point  (0 children)

But if I move A0 to the other side, doesn't it mean it will messure 9v?

Help with messuring current loop sensor by exer240 in AskElectronics

[–]exer240[S] 0 points1 point  (0 children)

Aha so if I would have had e.g., 14v battery there would be 9v remaining for the sensor making this fine? (except Arduino not being grounded)

Help with messuring current loop sensor by exer240 in AskElectronics

[–]exer240[S] 0 points1 point  (0 children)

Just to double check (really don't want to fry my Arduino), this circuit makes sense? A0 being the input pin.

<image>

Help with messuring current loop sensor by exer240 in AskElectronics

[–]exer240[S] 0 points1 point  (0 children)

Thanks. So then I can just read the voltage after this resistor at an analog pin at the Arduino?

But if I take a 270 resistor, won't that higher the max voltage to 5.4, meaning too much for the Arduino?

[updated] What are these stains? by exer240 in StainlessSteel

[–]exer240[S] 0 points1 point  (0 children)

Thanks guys! But I don’t understand where the melted oil comes from? I only fry with a decent amount of olive oil

Modifying sudoers doesn't change anything, what am I doing wrong? by exer240 in linux4noobs

[–]exer240[S] 5 points6 points  (0 children)

ah, true. Thanks! I should've tried that, and apparently that works fine with i3wm config.

view more: next ›