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Please ensure you’re sampling fast enough to ensure you’re not missing edges. Double check that it’s truly frequency and not duty cycle that’s modulated with the the signal. Alternatively, look into if your hardware has a timer/counter peripheral that can count the edges it sees on a pin. Then all your application code needs to do is divide the number of counts by some period of time between checking that value.
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Mar 22, 2020 01:37
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Dominoes, try asking about this sort of thing in the Learning Electronics Megathread - there are experts there who do this kind of poo poo for a living, and someone may well have experience with the flow sensor you’re using
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Mar 22, 2020 02:49
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i'd generally set that up as an interrupt pin with a dead simple ISR to increment memory per pulse and worry about reading it out safely at thread time as-is you're hoping that you catch both sides of every edge with a lot of cycles spent staring at, manipulating, and comparing the current time stamp, completely blocking out other users. that might be fine depending on the application
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Mar 23, 2020 20:42
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Hey dudes. VS Code question. I'm working on a project using elusively VS Code (Due to a tip from Therm about SSHing from an editor). I've used this for one-off files for a while, and understand it's a popular editor, including for full projects. Using the official Rust extension. Some Qs: - How can I get it to go to a fn etc definition? Googling shows F12, but it's not working. - How can I get it to highlight errors? Eg typos in var etc names, mutability issues, general mistakes. - How can I get it to autocomplete things, like avail fns and methods, and fn args? (from my project, official libs, or third-party) Are these just things I'm spoiled with from Jetbrains, or is there a way to make this work? The only thing clever it's doing for me is syntax highlighting. Or is it just made to be used as an extendable syntax-highlighted text editor, and some people prefer that?
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Mar 25, 2020 02:15
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vscode is great and can get real smart about autocompletes and such, but it’s entirely dependent on the language plugin. It may be the Rust plugin isn’t that smart, or maybe there’s some config you’re missing? The plugin page would hopefully have documentation on it.
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Mar 25, 2020 03:33
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That's probably it. Looks like it's having similar issues (scope limitations?) with Python too.
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Mar 25, 2020 03:41
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Your ssh comment means you’re doing remote development? I’m just getting it set up for C++ and it looks like some plugins can be installed on the remote host as well as locally. Worth a shot to see if maybe it adds functionality.
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Mar 25, 2020 04:22
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I've just tried and the rust extension doesn't appear to work with the ssh one (at least without more configuration) - opening my project locally starts RLS and go to definition etc works, but opening the same project over SSH it doesn't.
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Mar 25, 2020 13:06
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Not sure if this belongs here, but I'll give it a shot: I'm looking at developing an application using an off the shelf API (https://www.fitabase.com/resources/knowledge-base/fitabase-api/). Essentially, what I'd want to do is create a "simple" web app that allows you to enroll users, and then use some simple logic (obtainable from the API) to automatically generate daily e-mail reports. It's been years since I've programmed, but how complex is what I'm asking (essentially using an off the shelf API/some PHP)? Are there places that I could pay to have this done?
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Mar 25, 2020 18:17
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@ Yippee - headless kinda-embedded. Still haven't diagnosed, since getting same behavior on local-only projects in both Py and Rust. Was leaning towards it being a natural limitation, but it sounds like I'm wrong. Break break. Web programming is a disaster; we need to burn it down and start fresh. Bad practices, accepted mediocrity. Too many layers, too complex, attempted solutions that address symptoms. -Shower thoughts inspired by quarantine and reading too much into a Jonathan Blow video. We don't have infinite computing power. Power consumption, and real-time responsiveness are real concerns. Workplaces loading up computers with network/security process that make the simplest tasks(logging in, getting to email / a word processor) a 15 min job. The house of cards encouraging companies to hire hundreds or thousands of programmers to work on relatively simple projects will fall. Pair programming, scrumming, TDD, javascript, containers, layers upon layers, agile, meetings, frameworks, Medium articles. Blocking, wasting. No natural selection. Dominoes fucked around with this message at 00:37 on Mar 27, 2020 |
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Mar 27, 2020 00:17
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Terrible devs are terrible devs, at least in webdev the browser doesn’t usually crash and take things down with it. Generally a step up from desktop app dev for the end user, outside of anything targeting MSIE6-only weird stuff. Just look at any recent Microsoft app, they still love synchronous processing that locks up the UI and can barely be canceled. Adobe in the same boat with a lot of their apps, Maya is amazingly bad for UX. They even know it and constantly mention it in the release docs: Maya controls and windows will not behave like you expect.
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Mar 27, 2020 03:05
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MrMoo posted:Just look at any recent Microsoft app, they still love synchronous processing that locks up the UI and can barely be canceled. Adobe in the same boat with a lot of their apps, Maya is amazingly bad for UX. They even know it and constantly mention it in the release docs: Maya controls and windows will not behave like you expect. I feel compelled to mention that Maya has one of Autodesk's terrible UXs, not one of Adobe's terrible UXs.
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Mar 27, 2020 03:39
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From what I've encountered of AutoDesk's UIs (Fusion360 and Eagle), the UI problems appear easily fixable. Could be a combo of not willing to break existing users' habit patterns, UI changes being low-priority, or it not being understood or acknowledged as a problem internally. For example, Eagle's schematic view isn't expecially complex compared to Fusion, but doing tasks like selecting the right item, or moving things feels painful. Ie it seems to take a certain combo of left and right clicks/holds in the right places. Or, when editing footprints, it provides parameters you can enter for lines like where they start, but not how big they are. There are a few small additions they could make that would make things go faster and more accurately. This includes the dimension tool. I've built and manage a scheduling app for my work and some offshoots of it. Process is dudes see something they don't like or would be good to add (Often on the level of the AutoDesk UI issues we're talking about); shoot me an email or tell me in person it sucks; I push a patch and it's done. I built a frontend web framework. Now more people are working on it, and I feel like I can't get anything done; folks insist on code reviews and PRing every commit. I have to write justifications for things I would have just committed before. And most of the changes recently have been internal refactors that don't change or add anything, so I stopped caring and lost track of the codebase, even though the API and feature set hasn't changed much since the start. Dominoes fucked around with this message at 04:03 on Mar 27, 2020 |
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Mar 27, 2020 03:46
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Dominoes posted:@ Yippee - headless kinda-embedded. Still haven't diagnosed, since getting same behavior on local-only projects in both Py and Rust. Was leaning towards it being a natural limitation, but it sounds like I'm wrong. This is the weirdest post I've ever seen you make.
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Mar 27, 2020 04:00
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It's the quarantine.
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Mar 27, 2020 04:02
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tbf pair programming can gently caress off
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Mar 27, 2020 04:08
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dupersaurus posted:tbf pair programming can gently caress off
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Mar 27, 2020 05:03
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Dominoes posted:Pair programming, scrumming, TDD, javascript, containers, layers upon layers, agile, meetings, frameworks, Medium articles. Blocking, wasting. No natural selection. daft punk really went downhill, huh
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Mar 27, 2020 06:27
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dupersaurus posted:tbf pair programming can gently caress off Well now you have a valid reason for not wanting it. 
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Mar 27, 2020 10:02
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Suspicious Dish posted:daft punk really went downhill, huh Ever since homework, yeah
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Mar 27, 2020 10:41
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Dominoes posted:a Jonathan Blow video. I get being desperate for stimulation but please don't self-harm
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Mar 27, 2020 14:19
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PluralSight is offering their content for free during April. I just signed up, no CC required. I've never taken any of their courses but I heard there are some gems in there. https://www.pluralsight.com/offer/2020/free-april-month I think their service is getting swamped, still waiting on my confirmation email.
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Apr 2, 2020 20:06
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What do you guys think the technology that is used behind Disney Worlds online systems and such? When I worked there all their reservation systems were done via a visual basic app connected to a web server but I could never tell. Just intrigued by what powers something so big and massive.
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Apr 5, 2020 01:17
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Empress Brosephine posted:What do you guys think the technology that is used behind Disney Worlds online systems and such? Probably AWS? Did you have a specific question in mind?
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Apr 5, 2020 03:35
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huhu posted:Probably AWS? Did you have a specific question in mind? HP built it all, so I imagine it's all "self" hosted on HP equipment.
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Apr 5, 2020 04:20
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I guess my question is probably not programming related but I wondered how everything managed to be linked together through like atleasy six different types of front ends? But knowing HP built it I can start researching. Thanks
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Apr 5, 2020 10:28
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It all goes to a nice lady who types it in in a spreadsheet, and then calls the appropriate hotel to make sure they have it marked in their paper calendar of reservations.
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Apr 5, 2020 16:47
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Empress Brosephine posted:What do you guys think the technology that is used behind Disney Worlds online systems and such? Probably something that made sense 5 years ago and has been kept running on duct tape, outsourced IT, and an army of contractors.
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Apr 5, 2020 19:20
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Suspicious Dish posted:It all goes to a nice lady who types it in in a spreadsheet, and then calls the appropriate hotel to make sure they have it marked in their paper calendar of reservations. IME, that is correct except that the hotel reservation is recorded in a different proprietary mess of a system.
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Apr 6, 2020 13:03
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Edit: hmmm I think since I am using .NET I will move this question to the .NET mega
friendbot2000 fucked around with this message at 20:58 on Apr 6, 2020 |
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Apr 6, 2020 17:07
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Volmarias posted:Probably something that made sense 5 years ago and has been kept running on duct tape, outsourced IT, and an army of contractors. This sounds a lot more like Universal than Disney. But then again they'd skimp and wouldn't have anywhere near an "army" of contractors, it'd just be Justin. Disney's UX folks are no slouches. The backstory on the Magic Band is impressive, I can't find the great teardown that shows just how much engineering got baked into the 4 antennas in a compact, IP67 enclosure. Spinning up a warehouse into a UX lab is impressive. I knew a EE who spent a few months working on a test jig setup for one of the antennas. The online reservations might not have that same high-touch engagement from principal imagineers. I'd start with a history of 'go.com' and figure out where things went from there.
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Apr 6, 2020 23:23
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Awesome going to read that. To me even something like having the in park sensors to tell how long a wait for a ride is and then be able to beam that data to a mobile phone is amazing but I guess I'm easily amazed as all that takes I presume is a database :V
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Apr 7, 2020 00:04
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JawnV6 posted:This sounds a lot more like Universal than Disney. But then again they'd skimp and wouldn't have anywhere near an "army" of contractors, it'd just be Justin. Nope, I meant Disney.
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Apr 7, 2020 00:04
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Empress Brosephine posted:Awesome going to read that. To me even something like having the in park sensors to tell how long a wait for a ride is and then be able to beam that data to a mobile phone is amazing but I guess I'm easily amazed as all that takes I presume is a database :V FWIW, a lot (all?) of rides don't use any (exclusively?) sort of fancy sensors. Every so often they give a rider entering the line a card on a lanyard and ask that rider to give it to the cast member at the end of the line. That tells them how long the line wait is. And then they fudge the numbers in the app to help control crowds. (or at least that's the opinion of people running sites like touringplans.com)
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Apr 7, 2020 17:40
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Hope this is the right thread - here goes: I have a mechanical system at work I'd like to automate. The automation would entail opening and closing various solenoid valves, and turning 120v pumps on and off(based on timers and/or pressure/temp readings). Based off a bit of googling, it seems an Arduino board might be appropriate for this. I am not a programmer. That said, about a decade ago I had a firm grasp of C++ and looking at Arduino code I feel like it's something I can learn. I know basically nothing about programming hardware though. Should I teach myself how to use an Arduino to automate this system? If not, what should I use? If I should teach myself, where is a good starting place? I've looked at the official Arduino.cc website but it's so broad I'm not really sure where to begin. Any direction would be much appreciated.
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Apr 9, 2020 01:34
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Any microcontroller would do it, Arduino included. C is the standard language for this type of thing. I've been learning on an STM32Discovery, which includes the chip, a bunch of pins, and built-in LEDs to practice with. Your microcontroller's interaction with your system, as you described it, would be output to a relay board like this, and input from sensors. This is a nice temp sensor. It uses something called a 1-wire input, which allows the controller to read the temp directly without using an ADC or calibration. I offer no resources, since I learned using a Rust guide, which is a bit bleeding edge at this point. You could also use a single-board computer like a Pi. It'll probably be about as easy to set up, but may be overkill in terms of price and power use. Arduino, Pi, or other controller, you'll probably use a high-level Hardware Abstraction Level (HAL); going low-level means board/controller specifics that may not transfer well to other devices. If you use a HAL, your code will be more portable if you change device. Dominoes fucked around with this message at 01:52 on Apr 9, 2020 |
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Apr 9, 2020 01:50
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How do I make cygwin run faster? cygwin takes forever to do anything. for example, on cygwin: code:code:I've attempted using cygserver as recommended here: https://superuser.com/questions/877051/cygwin-from-windows-is-very-slow-laggy but I feel like it made the problem even worse. Maybe I simply made a mistake installing it? idk.
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Apr 9, 2020 17:11
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WSL? Do you actually want WSL? I think you want WSL.
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Apr 9, 2020 17:47
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JawnV6 posted:WSL? Do you actually want WSL? I think you want WSL. I've got to laugh at just reading your rant in the other thread about context and stuff and then you not noticing that this person specifically mentioned wsl in his post. Not that that doesn't happen to all of us it was just a funny juxtaposition to me.?
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Apr 9, 2020 17:53
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JawnV6 posted:WSL? Do you actually want WSL? I think you want WSL. I'm not sure what you mean by this but the reason my cygwin performance is bothering me is because I have to use cygwin at work, not wsl. When we were deciding on what our toolchain would be, I assumed cygwin would be a better choice than wsl because wsl seemed like a bleeding-edge feature at the time. I didn't want to advocate for something I had only just heard about. All I knew about Cygwin was that it's mainstream, and been around since forever. I figured in TYOL 2019, all the issues with it were probably ironed out.
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Apr 9, 2020 18:40
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