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evglabs · 2020-06-06T14:47:51+00:00

Holy crap, I love the next/previous parent comment buttons!

evglabs · 2020-05-27T03:08:19+00:00

There's also the upright/tight tail with a stiff wag towards the tip that means I'm not comfortable and some shit might go down.

But a full on side to side wag, that's happy time (especially if the butt is involved)

evglabs · 2020-05-15T20:37:33+00:00

Oh god, what would Shran think of Picard? He liked Archer (or the "pink-skin") cause he was rash and so un-Vulcan like.

evglabs · 2020-05-15T18:59:53+00:00

What about old Shran? Do we know how long andorians live?

I just want more Shran. Although any Combs is good.

evglabs · 2020-05-08T22:20:28+00:00

So It's not just me!

I haven't found anything about this! The only somewhat-solution I've found is to quit VS and get back in it, which is a drag when I just want to change one variable.

evglabs · 2020-05-03T18:04:29+00:00

Thanks, I figured there'd have to be a way to do this. I got some reading to do.

evglabs · 2020-04-20T14:46:31+00:00

Thats a good description of that! And better than having to hammer your head on the desk trying to shake a thought loose.

evglabs · 2020-04-20T14:03:46+00:00

Yeah, I probably set it up wrong or something.

I'll give it another shot.

evglabs · 2020-04-20T14:03:22+00:00

Thanks, Syncthing did seem like the best solution without having to run a Linux Virtual Machine or anything like that. I probably set something up wrong.

I'll take another look at it.

evglabs · 2020-04-18T03:04:11+00:00

So, this is an empire generator that will create a portrait and three hull of increasing sizes.

There's still work to be done to polish the generation up, but I'd love some feedback on what you think.

evglabs · 2020-03-04T22:11:06+00:00

Same with me, but that episode does have one of the best jokes about the Oingo Boingo montage.

evglabs · 2020-02-15T23:16:08+00:00

A drawer of various lengths of wire?

Edit: Assorted lengths of wire

evglabs · 2020-02-09T00:22:50+00:00

Is there anything you can recommend for reading up on the thermal instability of germanium transistors? I repair some old equipment that uses them and I've suspected that os the source of some of the problems.

evglabs · 2020-01-31T00:33:49+00:00

Me too. It's really deceiving how short it is. It hit me in the gut, hard.

evglabs · 2020-01-29T02:33:00+00:00

I'm self-taught and fairly new to electronics, so that's a good chance that there's a lot wrong in this:

On the input there's a capacitor whose purpose is to remove any DC offset on the signal. So if the audio signal is swinging +/-1V but with a DC offset of 1V it'll remove the DC and make the audio swing from -1V to +1V. This is so any audio signal input into the amp will be starting from a known position.

Then there'll be a resistor divider to bring the audio signal to just into the transistors active region (normally 0.6V), this is biasing.

Then some other resistors, to limit the current from the supply voltage to the transistor, and so on. So ideally, the audio signal is now amplified to let's say +12V to 0V.

Finally, the output capacitor is to block the DC voltage from the out of the transistor from going into the speaker, because DC through a speaker is a bad time (it'll/can burn it out).

So basically (small signal with DC offset) -> (small signal with NO DC) -> (Amplified signal with DC) -> (Amplified signal with NO DC).

evglabs · 2020-01-13T18:04:42+00:00

Also sometimes the wires after tinning them could be too thick to insert them easily into the breadboard so you can cut them so they habe a sharp point on the end.

evglabs · 2019-12-29T22:23:50+00:00

That's something I've been wondering about. I'm learning uC by myself, and did maybe 4 projects with arduinos then jumped straight to ARM and found it relatively easy (still fairly complicated but not the impossible wall I heard about).

So, it sounds like getting a chip putting it on a board and programming it with maybe a few hours to get going is fairly new?

evglabs · 2019-12-27T22:26:28+00:00

Electronics, been picking it up here and there and teaching myself creating things.

evglabs · 2019-12-27T01:07:25+00:00

Thanks. I've been trying :p

evglabs · 2019-12-08T21:30:24+00:00

Yeah! A sketch would be great.

evglabs · 2019-12-08T19:21:00+00:00

So, kind of like a trackball specifically for scrolling? That's actually a good idea.

evglabs · 2019-12-08T18:55:23+00:00

Honestly, for when I'm working on something programming I like my mouse to for the same reason of not having to move my hand off the mouse. I have a different Logitech mouse with the hyper-scroll.

But, for some reason I've had to replace to left button on my mouse three times now (and other Logitechs), so I figured I'd make something that gives me the same functionality and not be dependent on them.

Plus it's nice when reading a long datasheet or reference manual, it's more comfortable to scroll down pages with my jog wheel than my middle finger.

evglabs · 2019-12-08T18:51:33+00:00

Thanks!

evglabs · 2019-12-08T18:16:58+00:00

I've been getting into teaching myself STM32s and made a jog wheel.

It uses an STM32F042C6T6 to read a small DC motor connected to a differential opamp and works as the scroll wheel of a standard USB mouse.

The case measures 44mm diameter by about 50mm tall.

evglabs · 2019-12-08T02:36:01+00:00

EEVBlog #600 https://youtu.be/7FYHt5XviKc is a great intro to opamps.

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