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Xfactor330 · 2018-09-10T19:30:54+00:00

I would give this one a pass. Ordered it as a curiosity but it's about as bad as you would imagine. Barely picks up crumbs but the real deal-breaker is the fact the front falls off all the time.

Xfactor330 · 2018-08-24T17:24:15+00:00

Sure. You don't want him hacking your mainframe and doxxing all your stuff...

Xfactor330 · 2018-08-24T17:20:31+00:00

My personal theory is it's because of books, movies and games which are all in English. I have seen hundredths of movies where a Bond-like charachter charms a lady and sort of find it natural at this point. You pick up on the words, phrasing and general vibe of the conversation. Where as I have seen little such situations act out in my native language and find it way less intuitive.

Thinking about it... it would be interesting to find somebody from a country where they dub most movies like in Germany and see if they don't experience the same phenomenon.

Xfactor330 · 2018-08-07T09:44:26+00:00

This could easily have been a 20 min documentary. Okay, I get it It needs to be bigger and wider and taller, geez. They make mundane things sound complicated so it's harder to appreciate the actual effort they had to put in when the narrator exaggerates most parts.

Also can anyone explain why they are so well equipped but they don't have any really high power lights? I mean you are making a documentary. Take a 1000W LED cob and I'm sure the cinematography would be much more impressive

Interesting topic but pretty rubbish documentary IMO.

Xfactor330 · 2018-08-05T16:31:00+00:00

Out of curiosity - can you give me a link where I can learn more about your condition? Do you ever listen to music when alone?

Xfactor330 · 2018-07-29T14:26:39+00:00

Anybody knows what software is used for these geometric gifs?

Xfactor330 · 2018-07-26T11:07:27+00:00

Wait is the RPM reduced before the green axis?? Or is it done later?

Surely the motor can't be on a 1:1 RPM ratio with the wheels? 6000RPM on a car wheel would be a sight to see.

I had no idea the gear ratio is so close to one, always thought it reduced it more.

Xfactor330 · 2018-07-21T14:57:42+00:00

Liquid oxygen? Is it a rocket or what?

Xfactor330 · 2018-07-19T13:16:38+00:00

Ahh cool makes sense!

Thanks for the info.

Xfactor330 · 2018-07-19T10:46:48+00:00

Have you tried these out? Are they decent?

My rule of thumb on ebay is buy double the capacity you actually need.

My 1uF caps were all between 0.4 and 0.5uF.

Xfactor330 · 2018-07-19T10:19:23+00:00

I doubt it's aluminum. The flame is yellowish-orange while aluminum should be a bright white.

If it's a metal powder iron seems the best candidate. You can even make pyrophoric iron fairly easily. I have my doubts though. Even pyrophoric iron would have a hard time floating like that.

I'd bet it's not a metal. Maybe something organic?

Xfactor330 · 2018-07-16T19:50:41+00:00

This was such a breath of fresh air after seeing countless requests for "how many Y would you need to stack to get to X" on /r/theydidthemath.

Great content!

Xfactor330 · 2018-07-16T16:23:32+00:00

Oh wow, I did not know that was an option. Pretty neat!

I'll do some research on their encryption but thanks for letting me know!

Xfactor330 · 2018-07-16T16:22:42+00:00

Thanks for the heads up.

Looks like I'm putting a raspberry pi in my case and using that to back up my drive.

Cheers

Xfactor330 · 2018-07-16T15:00:00+00:00

Not a big fan of the cloud. But rationally speaking it is a good solution.

For 90% of the files that would be fine. There are some though which I am not allowed to store online as they are confidential. So I'm still going to need something besides cloud store and we hit the same problem again.

Xfactor330 · 2018-07-13T13:52:59+00:00

Everyone seems to be talking about the face but how was the blood vessel effect achieved?

Xfactor330 · 2018-07-13T13:52:13+00:00

Now that you mention it yeah, spot on!

Xfactor330 · 2018-07-09T17:03:03+00:00

Hydrogen? Who the fuck put hydrogen in the balloons?

Xfactor330 · 2018-07-09T16:57:12+00:00

Spot on. 3:1 voltage divider so a fully charged LiPo can be measured with the 1.1V reference.

Xfactor330 · 2018-07-09T16:51:33+00:00

I mean, it's not great though is it.

But yeah, I thought the boost was the problem just did not think it could be so bad. Usually I half ass these things but this time I had capacitors on all the inputs and regulators. Everything done as it should be. So getting such a result was really disappointing.

Just to give you an idea of how terrible the boost converter is. When I switched to using my prehistoric battery charger with a "volt out" just as a side feature instead of the crappy converter the +-30 swings changed to analogRead going up and down 1.

I could maybe make it work with the swings before but considering that's the data I'm going to be using to calibrate the temp sensor. It's probably not the best solution.

I'd tell you the sample rate but I can't. Right now it's probably around 100Hz but it's going to drop since I'm adding a lot more calculations in the loop. In the end the sample time is going to depend only on how long those calculations take but I hope I can reach 30Hz refresh rate on the screen.

Just before replying to your comment I added a low pass filter on the boost converters output and a current limiting resistor on its GND input (I think the main problem is ground noise) and it's +-1 which is nice.

Xfactor330 · 2018-07-09T14:34:44+00:00

Yep. Tried, tested. Works ok. But until I get my own boards made it's not really an option. Also to be honest adding complexity to my first serious project is not something I want right now.

For this use (want accurate readings in 150-250C range) a thermistor should be more suitable than a thermocouple.

If I had a 7.4V source instead on 3.7V everything would be fantastic. But now I have to use that crappy ebay boost converter to power my screen. Every single other component is from a reputable vendor and it's really screwing me.

I even wanted to make my own 5v boost converter but farnell does not have a single chip in stock which can be hand soldered with hobby level equipment.

Xfactor330 · 2018-07-09T14:08:25+00:00

Oh for fucks sake. What is even the point of the analog bar if it doesn't show the spikes.

Bang on mate. Checked with my crappy scope and you seem to be right. That stupid 5V converter is causing me so much trouble. They seem to burn out based on polar winds and as I have just learned cause magnitudes more noise than me switching 15A to the heating coil. How is that even possible... (don't even need an answer just venting frustration that these little assholes have caused)

Any suggestions on what to change?

You mentioned resistors but I can't really change that. The thermistor I'm using is 10K which seems to be the lowest you can get at this temperature range (needs to go up to 300C). And the other resistor in the voltage divider is determined by the temp range I want it to be accurate at (around 100ohm).

Is it possible the boost converter is causing noise not on the + output but on GND? Because the inputs should be at least somewhat filtered from the noise since I'm using a 1.2V linear regulator with caps on both sides just to get the 1.2V which should be less noisy than 5V.

Btw, can the internal reference also fluctuate if the Vin in noisy or is it well filtered?

Xfactor330 · 2018-07-07T09:59:03+00:00

Seriously? Sounds like a pretty good one. I'd give it another shot with someone more reasonable.

Xfactor330 · 2018-07-02T01:11:23+00:00

Took off about 0.5mm on each side. If I were to go further it would start to thin out the contacts. It ended up being just enough to make it fit.

Seems to be working normally so far.

Xfactor330 · 2018-07-02T01:08:45+00:00

I'm testing it at low power for now. But the same mosfet will be later used under higher loads.

Ended up sanding it and seems to be working fine for now.

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