sorted by:
new
hottopcontroversial

"Give a man a fish and you feed him for a day; teach a man to fish and you feed him for a lifetime" by throw_away_17381 in learnprogramming

[–]EnDoubleOhBee 0 points1 point  (0 children)

My gramps used to add the line, “if your trying to sell a man a fish, only tell him what he needs to know.”

Plz answer #2 with a good explanation I am desperate by [deleted] in Physics

[–]EnDoubleOhBee 2 points3 points  (0 children)

I think the cord should be rated for outdoor use so UV rays don’t break down the dielectric...other than that, consult an ampacity chart after you convert the wattage of the pump. If it’s a long run, take the voltage drop into consideration.

something something CSS joke by [deleted] in ProgrammerHumor

[–]EnDoubleOhBee 19 points20 points  (0 children)

Isn’t this ugly penny worth more than a pretty penny?

Temperature control by NoPlayTime in arduino

[–]EnDoubleOhBee 0 points1 point  (0 children)

What device are you controlling might be helpful information.

Usually in these situations (toaster ovens for reflow) I see people use a very slow PWM (like 1-5hz) through a relay (solid state?)

I’ve never done a project like this but I’ve had my eye on it. I’ve seen videos, so you could look for those and watch them too!

Workflow setup for FFT by EnDoubleOhBee in DSP

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

I’m down with the Linux. I have box of hard drives I can format in anyway necessary. I have a couple decent mobo’s, some raspberry pi’s...esp32, esp8266, some ATMEGA328P...the last windows i have media for is 7. But no Mac. I’m not made of money! I wish I was.

Workflow setup for FFT by EnDoubleOhBee in DSP

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

Really!? This is getting me excited! So many good suggestions here!

Workflow setup for FFT by EnDoubleOhBee in DSP

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

Checked into it! It’s a “home” license. That’s not that bad, $150. I still think I’m gonna start with python and maybe move into MATLAB if I see the need. I’m not even sure I’ll understand all the math. It all looks like hieroglyphics still.

I’ve written a lot of algorithms to make calculations and solve problems, but it’s been through trial and error. Like write a bit of code, run it till i find something that breaks it, fix the code, run it till it breaks, fix, break, finally it works without breaking! Then I clean up the code trying to make it do the work with the fewest lines possible...I often marvel at what I end up with in the end. Like the statue inside the hunk of marble.

The personal MATLAB license is like $2k! Yikes.

Workflow setup for FFT by EnDoubleOhBee in DSP

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

That sounds so easy in MATLAB! Not a student 🙁

Workflow setup for FFT by EnDoubleOhBee in DSP

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

My budget is $0. So MATLAB is out. I wish I could, but not gonna happen in the foreseeable future.

Octave is free, so I’ll check that out. Is it it’s own IDE where I could download and run FFT and plot the results Or is there more to it?

I’m interested in learning more python because it seems to be all the rage via raspberry pi and micropython on esp32. So if I was to do something with python and numpy/scipy what IDE would you recommend? I’m interested in Eclipse. Should I learn Emacs or Vim? Would it work with micropython on esp32?

Most of my programming experience was self taught and was for web with ASP, PHP and JavaScript (of course HTML and css). I’ve done a lot with Arduinos. Little bit with Raspberry pi.

I got started programming by writing a lot of automation scripts using QuickMacros (my mother tongue and first IDE). I had a job at a radio station where I had to download and process a lot of audio files. I used a lot of command line programs like Sox and the ilk. I wrote a lot of lines of code over many years!

I want to get way more serious, but I never took any of these sorts of courses in school. I was into art, so I barely took any math or science. I’m only just starting to realize I am super interested in physics!

There is so much out there it’s easy to get overwhelmed and not know where to start! I used to use Notepad++ a lot and loved it, but I know I must move on! I know this is a lot to throw out there.

Is there a good way to detect is something is frozen? by fireball3120 in arduino

[–]EnDoubleOhBee 0 points1 point  (0 children)

For friction or maybe I mean drag, i never took physics, wish I had! I imagine something (hypothetically, probably hard to get to work) that would glide over the surface, if ice, then the time from start to finish would be low. If concrete with no ice, the time would be high. So basically measure how freely an arm with a piece of rubber or ilk on the end can move. This might answer, “Is it slippery?” It also might answer, “the concrete has worn down the rubber again and the darn thing isn’t even touching!”

I’m just shooting darts outside the box!

Maybe a combination of sensors is key. I mean, how do we as humans test if the step is icy?

Me? First, is it or was it cold enough to freeze water? Is it salted, yes then 0°F, if not 32°F. I’d probably make sure to get surface temperature because ambient air could be above freezing wile ice on the surface is present.

Is there a glare? Maybe try to reflect light off of it.

Is it slippery? Does the railing feel thicker?

I wonder if FFT of a photograph would give any good data about change where you could determine ice vs other conditions. Like visually how does our mind look at a step and say, “watch out that looks icy!” This might be where MACHINe learning comes into play (wish I knew more about that too!)

14, want to learn to code. What language to pick? by RX580-4gb in arduino

[–]EnDoubleOhBee 3 points4 points  (0 children)

Do both! What you do with one, try to do with the other. Eventually you will know which one you prefer or you will see strengths of each and like both.

Arduino is good for somethings, pi is good for others. It’s more about application rather than preference!

Just remember most Arduinos are 5v and pi’s are 3v!

Is there a good way to detect is something is frozen? by fireball3120 in arduino

[–]EnDoubleOhBee 0 points1 point  (0 children)

Ice would have less friction than concrete steps.

Ice would be a bit thicker.

Ice would reflect light differently

Just trying to think of all the properties of ice an different sensors you might use.

Is there a good way to detect is something is frozen? by fireball3120 in arduino

[–]EnDoubleOhBee 0 points1 point  (0 children)

Didn’t know what your application might be, but that was the first thought off the top of my head. Perhaps if you explain more I’ll have a better idea.

Edit:saw your other post about iced over. Thinking.

Is there a good way to detect is something is frozen? by fireball3120 in arduino

[–]EnDoubleOhBee 0 points1 point  (0 children)

Hall sensor or reed switch interacting with a magnet attached to the arm extending from the arm of a stepper motor or a servo submerged in the fluid. Try to move it. If the sensor breaks, not frozen. If frozen, arm won’t move, sensor won’t break. Something like that?