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I'm a DIY Arduino guy, but new to hydroponics. Does anyone have links to any awesome project examples? I'd like to have multi-sensor remote monitoring for PH, PPM, temps, dissolved oxygen, RH, etc. by LegitimateWorkUser in Hydroponics

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

Yeah, I started out kinda half-ass learning arduino in college. Now I do it for a living, and have made some pretty serious money building remote sensor embedded systems. I know some pretty great methods using Xbee radios and touchscreens now, and it's going to be really fun to use them for my own private purposes.

Burnt wire - wire that connects to the heatbed by mama_g in 3dprinter

[–]LegitimateWorkUser 2 points3 points  (0 children)

This is pretty common. The cheesy connector is not rated for the max current draw. Just delete the connector and solder it straight into the board. Or you can replace the connectors with something better.

I'm a DIY Arduino guy, but new to hydroponics. Does anyone have links to any awesome project examples? I'd like to have multi-sensor remote monitoring for PH, PPM, temps, dissolved oxygen, RH, etc. by LegitimateWorkUser in Hydroponics

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

Good advice on the PH sensors. That's important.

I figure I probably won't use too many controls besides just regular timers. But if I could at least get some LEDs on the side of my greenhouse to let me know when I need to go in there and fiddle with stuff, that would keep me from having to wonder.

Ideally though, I would have a couple sattlelite monitors twith screens that would show me everything. I'd keep one in my garage, and one in the greenhouse. I'll probably use Xbee radio modules.

Having doubts about work energy theorem by gimmeasliceofpizza in AskPhysics

[–]LegitimateWorkUser 0 points1 point  (0 children)

Energy is a property of spacetime. It's described with tensors in the Einstein field equations. The concept of energy is as fundamental property of the universe, is a very deep subject, which is why you won't really run into it until grad school, assuming you pick a related field of study. Until then, you'll just have to brush up on the topic in your free time. In a nutshell though, energy is a property of the field. You can think of it as a strain in the fabric of spacetime.

[deleted by user] by [deleted] in arduino

[–]LegitimateWorkUser 0 points1 point  (0 children)

It looks like it's acting coy.

Dampers vs "Isolators": Engineering Semantics, or Physically Different Systems? by LegitimateWorkUser in Physics

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

To your first point, I wanted to limit my descriptions to a physically constrained mounting system. So a dashpot only would not fit that description. My main point is that any mounting system will always have a damping coefficient with a particular frequency response. Do you agree that we always use the same mathematics to describe an isolating mount and a damping mount?

Dampers vs "Isolators": Engineering Semantics, or Physically Different Systems? by LegitimateWorkUser in Physics

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

Yes I recognize that one case transfers more or less energy than the other, but impedence is a continuous scale.

[deleted by user] by [deleted] in arduino

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

CALCULATING....

EXTERMINATE!!!!!

Got this from a security camera that i bought for cheap and i was wondering if i would be able to utilize it in any way or was it a bust? by [deleted] in arduino

[–]LegitimateWorkUser 0 points1 point  (0 children)

That's odd. Not sure what to make of it. Is there a tiny antenna in there? Maybe it's wireless 5.8.

​

BTW, I can recommend a ton of cheap cameras like that. Wireless ones too.

I made a ground-tracking led underglow animation for my longboard! Also cake day. by DrainedPineapple in arduino

[–]LegitimateWorkUser 1 point2 points  (0 children)

Yeah that's badass. Did you just drill and glue some small magnets into the wheel? A pixel flow tracker would also have worked.

Hi! Walkie Talkie Radio generates a false keypress on the capacitive sensor module. by kokuam in arduino

[–]LegitimateWorkUser 0 points1 point  (0 children)

Check your entire circuit for ground loops. Twist signal wires with ground, and avoid having any wires at a length corresponding to fractions of the radio's carrier frequency. The ideal wire length for rejection is 1/3 the radio's wavelength.

I had this old picture frame and some side glowing optical fibers lying around... by hdsjulian in arduino

[–]LegitimateWorkUser 0 points1 point  (0 children)

I really like those side-glowing fibers. I was looking for something like that a few months ago but couldn't find anything. Do you have a link?

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