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I'm trying to write a simple bash script that opens up GQRX, sends it some TCP commands, then closes it down.

Unfortunately, I've found that when I close the program like this, the next time it opens, it will pop up a window saying "crash detected" and ask me to review the configuration file. This prevents the app from loading unless someone is present to click the dialog box.

This error only seems to happen when I try to close the program using the bash script. Closing it by just clicking the X doesn't cause this problem next time it's launched.

I think I'm closing the app too aggressively which terminates it before it can wrap up its affairs, and it interprets this as a crash. What's the best way to close the app to keep this from happening?

I've tried:

• pkill -3 gqrx
• pkill -13 gqrx

But the problem persists. Is there an even softer way to close an application?

Got a pack of C. Crisps from Costco two weeks ago, and they were awful. Little flavor, mealy texture. They looked beautiful, but that had zero crunch, and really bland flavor.

Figured it was a bad batch and bought another dozen from Fred Meyer. Same thing.

Is something going on in the world of apples? I get they’re not in season, but this seems extreme.

5:59 PM, Frasier reveals that he’s going to Chicago. 6:01pm, he’s back at EP 1 with his dad moving in.

Thanks CoziTV for keeping it going strong.

I'm an EE by trade focusing on embedded devices, but most of my work is in relatively low-power STM32 applications. When I stopped following developments in hobby kits, it was mostly Arduino Unos slowly driving I2C OLED displays.

Now suddenly, there are embedded Raspberry Pis and ESP32s doing realtime facial recognition and video feeds.

Is there a good place to look to catch up on what's now possible with these embedded devices?

Also, while I enjoy the ease of the hobby kits, I'm also interested in more mass-production-focused solutions.

Do guns wear out? Do they end up in landfill? You always hear about guns being sold, but never about what happens to them at the end of their useful life.

All but one cut. Plugs left behind. Station hasn’t even opened.

More images.

It’s going to be a game with a collection of mini games that cover different aspects of our dog’s life/personality. So far, I’m thinking a zoomies race course in our backyard (steer with crank), a balancing game (balance with crank), and maybe a walk simulator and a dress up game.

I’ve never tried working with 1-bit graphics before. I have experience with rudimentary digital artwork (I used to do a webcomic, but not much to look at), but 1-bit art is much different.

I find that when you’re moving around changing one pixel at a time, you often get to a point where it either looks perfect or doesn’t quite look right, and you just need to keep flipping pixels until it looks perfect. It’s a very rewarding experience.

Hoping to have it done by Christmas.

I'm working on implementing the PID compensator on the top of page 20 here. I've already got a circuit working, but it oscillates a ton, and I was hoping to tune it with a better strategy than just guess and check.

The datasheet doesn't go into a lot of detail on how it's supposed to work, but I found a whitepaper that covers single-stage PID compensators in more detail here.

I've got this compensator working, I've modeled it in spice and the poles and zeroes show up where they should, but I have no idea how to actually tune it to my system.

My understanding is that I need to fit the equation (3) on the second link to the form kp + kds + ki/s, but it's an algebraic nightmare.

What I'm hoping for is some derivation of the PID constants in terms of the components in my system. Then I can work on one of the many tuning methods. The datasheet even assigns names to components implying that they're responsible for setting one of the constants (Cd and Rd for derivative term for example), but I'm fairly certain they can't be completely isolated like that.

Also, if the answer is just that I need to re-learn how to do partial fractions, I'm okay with that.

So I need to move my server closet out of the guest room closet and into the basement so the closet can be used as a closet again.

I’ve got like 15 shielded cat6 with insulated risers patched into the back of a rack mount patch panel.

My goal is to end up with all of the existing cable extended 15’ or so to the new patch panel location, with maybe some kind of small door in the wall of the original closet so I can access the splices if anything goes wrong.

I invested in shielded cat6 when networking the house to future proof everything, and I have solid home runs to every location. I’m currently only running gigabit speeds, but I’d like to preserve the integrity of the original cables as much as possible.

With that in mind, what’s the best method for this extension? I’ve seen shielded punchdown junction boxes as well as female/female inline couplers. Keep in mind that there will be a bunch of them, so any advice on keeping things organized is appreciated.

I picked up a low pressure sodium lamp and am working on a Halloween demonstration. I’m hoping to make a display that appears one way under normal light, but looks totally different under the monochromatic 589nm sodium vapor light.

So basically, I’m looking to generate a color wheel where I pick a shade of gray and get a list of colors that would look that gray under sodium vapor light.

…I feel like there must be a Python library for thing or something…