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This Week in Rust 510

Hello and welcome to another issue of This Week in Rust! Rust is a programming language empowering everyone to build reliable and efficient software. This is a weekly summary of its progress and community. Want something mentioned? Tag us at @ThisWeekInRust on Twitter or @ThisWeekinRust on mastodon.social, or send us a pull request. Want to get involved? We love contributions.

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week's issue, please submit a PR.

Updates from Rust Community

Official

Announcing Rust 1.72.0

Change in Guidance on Committing Lockfiles

Cargo changes how arrays in config are merged

Seeking help for initial Leadership Council initiatives

Leadership Council Membership Changes

Newsletters

This Week in Ars Militaris VIII

Project/Tooling Updates

rust-analyzer changelog #196

The First Stable Release of a Memory Safe sudo Implementation

We're open-sourcing the library that powers 1Password's ability to log in with a passkey

ratatui 0.23.0 is released! (official successor of tui-rs)

Zellij 0.38.0: session-manager, plugin infra, and no more offensive session names

Observations/Thoughts

The fastest WebSocket implementation

Rust Malware Staged on Crates.io

ESP32 Standard Library Embedded Rust: SPI with the MAX7219 LED Dot Matrix

A JVM in Rust part 5 - Executing instructions

Compiling Rust for .NET, using only tea and stubbornness!

Ad-hoc polymorphism erodes type-safety

How to speed up the Rust compiler in August 2023

This isn't the way to speed up Rust compile times

Rust Cryptography Should be Written in Rust

Dependency injection in Axum handlers. A quick tour

Best Rust Web Frameworks to Use in 2023

From tui-rs to Ratatui: 6 Months of Cooking Up Rust TUIs

[video] Rust 1.72.0

[video] Rust 1.72 Release Train

Rust Walkthroughs

[series] Distributed Tracing in Rust, Episode 3: tracing basics

Use Rust in shell scripts

A Simple CRUD API in Rust with Cloudflare Workers, Cloudflare KV, and the Rust Router

[video] base64 crate: code walkthrough

Miscellaneous

Interview with Rust and operating system Developer Andy Python

Leveraging Rust in our high-performance Java database

Rust error message to fix a typo

[video] The Builder Pattern and Typestate Programming - Stefan Baumgartner - Rust Linz January 2023

[video] CI with Rust and Gitlab Selfhosting - Stefan Schindler - Rust Linz July 2023

Crate of the Week

This week's crate is dprint, a fast code formatter that formats Markdown, TypeScript, JavaScript, JSON, TOML and many other types natively via Wasm plugins.

Thanks to Martin Geisler for the suggestion!

Please submit your suggestions and votes for next week!

Call for Participation

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

Hyperswitch - add domain type for client secret

Hyperswitch - deserialization error exposes sensitive values in the logs

Hyperswitch - move redis key creation to a common module

mdbook-i18n-helpers - Write tool which can convert translated files back to PO

mdbook-i18n-helpers - Package a language selector

mdbook-i18n-helpers - Add links between translations

Comprehensive Rust - Link to correct line when editing a translation

Comprehensive Rust - Track the number of times the redirect pages are visited

RustQuant - Jacobian and Hessian matrices support.

RustQuant - improve Graphviz plotting of autodiff computational graphs.

RustQuant - bond pricing implementation.

RustQuant - implement cap/floor pricers.

RustQuant - Implement Asian option pricers.

RustQuant - Implement American option pricers.

release-plz - add ability to mark Gitea/GitHub release as draft

zerocopy - CI step "Set toolchain version" is flaky due to network timeouts

zerocopy - Implement traits for tuple types (and maybe other container types?)

zerocopy - Prevent panics statically

zerocopy - Add positive and negative trait impl tests for SIMD types

zerocopy - Inline many trait methods (in zerocopy and in derive-generated code)

datatest-stable - Fix quadratic performance with nextest

Ockam - Use a user-friendly name for the shared services to show it in the tray menu

Ockam - Rename the Port to Address and support such format

Ockam - Ockam CLI should gracefully handle invalid state when initializing

css-inline - Update cssparser & selectors

css-inline - Non-blocking stylesheet resolving

css-inline - Optionally remove all class attributes

If you are a Rust project owner and are looking for contributors, please submit tasks here.

Updates from the Rust Project

366 pull requests were merged in the last week

reassign sparc-unknown-none-elf to tier 3

wasi: round up the size for aligned_alloc

allow MaybeUninit in input and output of inline assembly

allow explicit #[repr(Rust)]

fix CFI: f32 and f64 are encoded incorrectly for cross-language CFI

add suggestion for some #[deprecated] items

add an (perma-)unstable option to disable vtable vptr

add comment to the push_trailing function

add note when matching on tuples/ADTs containing non-exhaustive types

add support for ptr::writes for the invalid_reference_casting lint

allow overwriting ExpnId for concurrent decoding

avoid duplicate large_assignments lints

contents of reachable statics is reachable

do not emit invalid suggestion in E0191 when spans overlap

do not forget to pass DWARF fragment information to LLVM

ensure that THIR unsafety check is done before stealing it

emit a proper diagnostic message for unstable lints passed from CLI

fix races conditions with SyntaxContext decoding

fix waiting on a query that panicked

improve note for the invalid_reference_casting lint

include compiler flags when you break rust;

load include_bytes! directly into an Lrc

make Sharded an enum and specialize it for the single thread case

make rustc_on_unimplemented std-agnostic for alloc::rc

more precisely detect cycle errors from type_of on opaque

point at type parameter that introduced unmet bound instead of full HIR node

record allocation spans inside force_allocation

suggest mutable borrow on read only for-loop that should be mutable

tweak output of to_pretty_impl_header involving only anon lifetimes

use the same DISubprogram for each instance of the same inlined function within a caller

walk through full path in point_at_path_if_possible

warn on elided lifetimes in associated constants (ELIDED_LIFETIMES_IN_ASSOCIATED_CONSTANT)

make RPITITs capture all in-scope lifetimes

add stable for Constant in smir

add generics_of to smir

add smir predicates_of

treat StatementKind::Coverage as completely opaque for SMIR purposes

do not convert copies of packed projections to moves

don't do intra-pass validation on MIR shims

MIR validation: reject in-place argument/return for packed fields

disable MIR SROA optimization by default

miri: automatically start and stop josh in rustc-pull/push

miri: fix some bad regex capture group references in test normalization

stop emitting non-power-of-two vectors in (non-portable-SIMD) codegen

resolve: stop creating NameBindings on every use, create them once per definition instead

fix a pthread_t handle leak

when terminating during unwinding, show the reason why

avoid triple-backtrace due to panic-during-cleanup

add additional float constants

add ability to spawn Windows process with Proc Thread Attributes | Take 2

fix implementation of Duration::checked_div

hashbrown: allow serializing HashMaps that use a custom allocator

hashbrown: change & to &mut where applicable

hashbrown: simplify Clone by removing redundant guards

regex-automata: fix incorrect use of Aho-Corasick's "standard" semantics

cargo: Very preliminary MSRV resolver support

cargo: Use a more compact relative-time format

cargo: Improve TOML parse errors

cargo: add support for target.'cfg(..)'.linker

cargo: config: merge lists in precedence order

cargo: create dedicated unstable flag for asymmetric-token

cargo: set MSRV for internal packages

cargo: improve deserialization errors of untagged enums

cargo: improve resolver version mismatch warning

cargo: stabilize --keep-going

cargo: support dependencies from registries for artifact dependencies, take 2

cargo: use AND search when having multiple terms

rustdoc: add unstable --no-html-source flag

rustdoc: rename typedef to type alias

rustdoc: use unicode-aware checks for redundant explicit link fastpath

clippy: new lint: implied_bounds_in_impls

clippy: new lint: reserve_after_initialization

clippy: arithmetic_side_effects: detect division by zero for Wrapping and Saturating

clippy: if_then_some_else_none: look into local initializers for early returns

clippy: iter_overeager_cloned: detect .cloned().all() and .cloned().any()

clippy: unnecessary_unwrap: lint on .as_ref().unwrap()

clippy: allow trait alias DefIds in implements_trait_with_env_from_iter

clippy: fix "derivable_impls: attributes are ignored"

clippy: fix tuple_array_conversions lint on nightly

clippy: skip float_cmp check if lhs is a custom type

rust-analyzer: diagnostics for 'while let' loop with label in condition

rust-analyzer: respect #[allow(unused_braces)]

Rust Compiler Performance Triage

A fairly quiet week, with improvements exceeding a small scattering of regressions. Memory usage and artifact size held fairly steady across the week, with no regressions or improvements.

Triage done by @simulacrum. Revision range: d4a881e..cedbe5c

2 Regressions, 3 Improvements, 2 Mixed; 0 of them in rollups 108 artifact comparisons made in total

Full report here

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

Create a Testing sub-team

Final Comment Period

Every week, the team announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now.

RFCs

No RFCs entered Final Comment Period this week.

Tracking Issues & PRs

[disposition: merge] Stabilize PATH option for --print KIND=PATH

[disposition: merge] Add alignment to the NPO guarantee

New and Updated RFCs

[new] Special-cased performance improvement for Iterator::sum on Range<u*> and RangeInclusive<u*>

[new] Cargo Check T-lang Policy

Call for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization. The following RFCs would benefit from user testing before moving forward:

No RFCs issued a call for testing this week.

If you are a feature implementer and would like your RFC to appear on the above list, add the new call-for-testing label to your RFC along with a comment providing testing instructions and/or guidance on which aspect(s) of the feature need testing.

Upcoming Events

Rusty Events between 2023-08-30 - 2023-09-27 🦀

Virtual

2023-09-05 | Virtual (Buffalo, NY, US) | Buffalo Rust Meetup

Buffalo Rust User Group, First Tuesdays

2023-09-05 | Virtual (Munich, DE) | Rust Munich

Rust Munich 2023 / 4 - hybrid

2023-09-06 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

2023-09-12 - 2023-09-15 | Virtual (Albuquerque, NM, US) | RustConf

RustConf 2023

2023-09-12 | Virtual (Dallas, TX, US) | Dallas Rust

Second Tuesday

2023-09-13 | Virtual (Boulder, CO, US) | Boulder Elixir and Rust

Monthly Meetup

2023-09-13 | Virtual (Cardiff, UK)| Rust and C++ Cardiff

The unreasonable power of combinator APIs

2023-09-14 | Virtual (Nuremberg, DE) | Rust Nuremberg

Rust Nürnberg online

2023-09-20 | Virtual (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

2023-09-21 | Virtual (Charlottesville, NC, US) | Charlottesville Rust Meetup

Crafting Interpreters in Rust Collaboratively

2023-09-21 | Lehi, UT, US | Utah Rust

Real Time Multiplayer Game Server in Rust

2023-09-21 | Virtual (Linz, AT) | Rust Linz

Rust Meetup Linz - 33rd Edition

2023-09-25 | Virtual (Dublin, IE) | Rust Dublin

How we built the SurrealDB Python client in Rust.

Asia

2023-09-06 | Tel Aviv, IL | Rust TLV

RustTLV @ Final - September Edition

Europe

2023-08-30 | Copenhagen, DK | Copenhagen Rust Community

Rust metup #39 sponsored by Fermyon

2023-08-31 | Augsburg, DE | Rust Meetup Augsburg

Augsburg Rust Meetup #2

2023-09-05 | Munich, DE + Virtual | Rust Munich

Rust Munich 2023 / 4 - hybrid

2023-09-14 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup at Browns

2023-09-19 | Augsburg, DE | Rust - Modern Systems Programming in Leipzig

Logging and tracing in Rust

2023-09-20 | Aarhus, DK | Rust Aarhus

Rust Aarhus - Rust and Talk at Concordium

2023-09-21 | Bern, CH | Rust Bern

Third Rust Bern Meetup

North America

2023-09-05 | Chicago, IL, US | Deep Dish Rust

Rust Happy Hour

2023-09-06 | Bellevue, WA, US | The Linux Foundation

Rust Global

2023-09-12 - 2023-09-15 | Albuquerque, NM, US + Virtual | RustConf

RustConf 2023

2023-09-12 | New York, NY, US | Rust NYC

A Panel Discussion on Thriving in a Rust-Driven Workplace

2023-09-12 | Minneapolis, MN, US | Minneapolis Rust Meetup

Minneapolis Rust Meetup Happy Hour

2023-09-14 | Seattle, WA, US | Seattle Rust User Group Meetup

Seattle Rust User Group - August Meetup

2023-09-19 | San Francisco, CA, US | San Francisco Rust Study Group

Rust Hacking in Person

2023-09-21 | Nashville, TN, US | Music City Rust Developers

Rust on the web! Get started with Leptos

2023-09-26 | Pasadena, CA, US | Pasadena Thursday Go/Rust

Monthly Rust group

2023-09-27 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

Oceania

2023-09-13 | Perth, WA, AU | Rust Perth

Rust Meetup 2: Lunch & Learn

2023-09-19 | Christchurch, NZ | Christchurch Rust Meetup Group

Christchurch Rust meetup meeting

2023-09-26 | Canberra, ACT, AU | Rust Canberra

September Meetup

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who's Hiring thread on r/rust

Quote of the Week

In [other languages], I could end up chasing silly bugs and waste time debugging and tracing to find that I made a typo or ran into a language quirk that gave me an unexpected nil pointer. That situation is almost non-existent in Rust, it's just me and the problem. Rust is honest and upfront about its quirks and will yell at you about it before you have a hard to find bug in production.

– dannersy on Hacker News

Thanks to Kyle Strand for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, andrewpollack, U007D, kolharsam, joelmarcey, mariannegoldin, bennyvasquez.

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

#rust-lang #rust #rustlang #twir #long post

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xfce-official · 4 months ago

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replying with my own quick thoughts:

tangara seems fun, but is also Fucking Expensive, even compared to the ipods it's supposed to replace. i got my ipod mini for 20 bucks, new battery and flash adapter and 64 gig sd card for another 50 ish, so my total cost in was about 70 dollars. even so, it has some drawbacks. i'm anti bluetooth headphones so no problem there, but the bulk of my library is in FLAC so i spent a few hours whipping up a script with ffmpeg to convert everything to the archaic form of AAC the thing needs and 256kbps. from there, you need to use some sort of impenetrable software, either libgpod based or itunes, to actually load it on-no cli utilities for it sadly.

I'm working on my own sort of no-frills music player thing at the moment, working with similar hardware to tangara (esp32, i2s dac, eventual capaciative touch wheel) but targeting a lower price and experience threshold, and aiming for the easiest loading of music i can get (rsync a directory onto a fat32 card and off you go). still in very early development stage but i'll probably shill for it on this blog once i get a rolling chassis up and going.

overall, the options on the market are:

15-20 year old hardware, with limited file support and proprietary sync options (ipods and other golden-age mp3 players)

new open hardware, with better file support but a higher cost (tangara)

new proprietary hardware, with worse ui and better file support but still a high cost (audiophile stuff)

new proprietary hardware with even worse ui but a rock-bottom price (aliexpress sludge)

and rockbox. which i don't like but might be nice for some.

I hate when I say things like "oh I want an ipod classic but with bluetooth so I can use wireless headphones" and some peanut comes in and replies with "so a smartphone with spotify?" No. I want a 160GB+ rectangular monstrosity where I can download every version of every song I want to it and it does nothing except play music and I don't need a data connection and don't have to pay a subscription to not have ads and don't have popups suggesting terrible AI playlists all over the menus.

Gimme the clicky wheel and song titles like "My Chemical Romance- The Black Parade- Blood (Bonus Track)- secret track- album rip- high quality"

#xfce reblog #mp3 #mp3 player #retro tech #technology

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campuscomponent · 2 months ago

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WIRELESS MODULE with BLE and WiFi – ESP32-C3-DevKitM-1 The ESP32-C3-DevKitM-1 from Campus Component is a low-power, cost-effective solution for IoT developers. It combines WiFi and Bluetooth LE connectivity in a compact design. Featuring robust security features and efficient processing capabilities, this board is suitable for smart home devices, health monitors, and industrial IoT systems. It supports Espressif’s ESP-IDF framework.

#WIRELESS MODULE #BLE and WiFi #ESP32-C3-DevKitM-1

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bonastudios · 5 months ago

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Developing IoT Projects with ESP32 - Second Edition: Unlock the full Potential of ESP32 in IoT development to create production-grade smart devices

Price: (as of – Details) From smart sensors to cloud integration and the world of TinyML, this book is your comprehensive guide to the IoT ecosystem, using the ESP32 and industry-standard tools and technologies Key Features: Build IoT projects from scratch using ESP32Customize solutions, take them to cloud, visualize real-time data, implement security featuresPractice using a variety of hands-on…

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commanderxay · 6 months ago

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How I buy my webcams and how it ended...

Webcams, how not to buy them, but I'm stupid and learning

Because I have holiday now due to chrismas and I posted nothing in the last month, I decided to make a comment about how I chose my webcams - and it's not a guide or an advice. It's rather more a funny story. I wanted to see the birds on my feeder. So I decided to buy some webcams. Cheap, with network access.

Step 1: ESP32 webcam

I bought some webcams based on ESP32, which is able to connect to my WLAN. Sounds good, bought three of them. Installed an USB hub and 5m USB cables to support them with power. But there was a problem very soon. The connection from the webcams to my WLAN wasn't good, so I replaced it with three WLAN mesh routers (Huawei WIFI AX3). The network quality did not increase so much. Next step was to use external antennas with the ESP32 webcams. To do this, a little bridge is to solder on the PCB board. In 603 circuit format. I'm too old for this sh*t, so I messed up one of the ESP32 cams, it was broken. I configured one of my servers to record the stream via ffmpeg32. Works... okayish. But not really usable outdoors.

Step 2: more ESP32 webcam

There were some offers with ESP32 webcams and external antennas. But when I read the comments about these, they said "yes, antenna included, but not with the soldered bridge to use it, have to make it by myself". So no gain. Finally I found a guy on ebay who offers ESP32 with external antennas and soldered bridge. Doubled the price, but worth great. I bought four of them. Fairly good WLAN connection.

Step 3: The rats are coming... nightsight and better images

Now, there is the bird feeder, the webcams and recording the stream. But then, some new guests are showing up. Rats. From where are they coming? How often? I needed answers to take action against them, because I don't want to contribute to a rat problem in our neighborhood. The ESP32 webcams can only make shots at daytime (and not very good). I needed something to monitor the night. Next step was to buy some webcams with nightsight. I chose 2 x Denver WCT6000 WLAN (but it seems not to be an actual webcam anymore, now it's maybe the WCT8026W). Yeah, installed... but... they are running on batteries (change 8 x AA batteries every 3-4 days), the SD-card (32 GB) was enough to record about 2 days and - most important - the WLAN wasn't really a WLAN. You can connect an app to the webcam via instant-WLAN, but you can't connect the webcams WITH the WLAN. On the plus side: The wildlife camera has (aside nightsight) a pretty good image resolution, the stream has a higher framerate (>20 frames per second, the ESP32 had 6 frames per second) and I could it use outdoors. But nevertheless, I placed the cams at serveral locations and could track the rats and what they are doing when. So I could perform some optimizations with the placement of the birdfeeder, but there was no real solution. Even the city (or the neighbor where the rats are coming from) wouldn't do anything. After all, the wildlife camera was nice, but not a real solution.

Step 4: Reolink 510D webcam

On the road to perfection, the next step was to combine all my knowledge. I need nightsight, outdoor, high resolution, high fps rate and additionally I don't want this WLAN connection anymore. Too much disconnects, not stable. Wires are the way to go! I shifted to webcams from Reolink and I decided to take six of Reolink 510D. Great decision. I removed the USB-Hub with the USB-cables and replaced it with a POE switch, connected to my LAN. Now, I could remove the mesh WLAN routers. Finally, I build a camera pole on my terrace for the webcams and printed three connectors for the Reolink to attached the flat end to the round pole. I installed datarhei streamer on my webserver, so I could see the result via internet (and VLC connected directly).

Step 5: webcam Reolink RLC810wa

Just a few month later, I switched the webcams to 4 x Reolink RLC810wa. I would say, there is a real reason about it. It has increased nightsight (up to 15m instead of 2m), it has a higher resolution (which I don't need, I have to reduce the resolution because of the bandwith). Yeah. They are black. That was the reason. I'm some kind of happy at the moment.

webcam conclusion

The sequence of buying one thing after another may be some kind of logic. But the real step is, that you learn with every new iteration new problem, you have to solve, but you didn't thought about them. So I upgraded from cheap to a fairly high level of money, which left a lot of hardware behind me. I paid too much at the end - regarding the now outdated hardware. Most important, that nobody in my peer group could talk about this to me in detail. They had no knowledge about this, even if they have webcams for their bird feeder or other use cases. But one of my kinks is "privacy". There are too many webcams out in the world, which NEEDS a connection to the manufacturers server, look at "Ring" e.g. I had a Ring doorbell and I was yelling about the question "share your ring webcam with your neighbors". To this point, I was willing to set it up for my use, but thinking about THIS quesiton alone, I was healed from all f*cking company app bindings and so on. So I needed webcams. which can exists in my personally controlled realm and networks and have no dependencies on the outer world, escpecially companies. Nah... merry chrismas and a happy new year 2025. Read the full article

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petoiusa · 9 months ago

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Programmable Robot Dog | Petoi LLC

Explore the extensive collection of open source robo dogs, robot cats, robot kits, Arduino robots, quadruped robots, and the best robotic pets available at Petoi programmable robot shop with affordable prices.

Petoi Bittle Smart Robot Dog is a family of futuristic bionic robot pets for adults that are built on top of Arduino or ESP32. It is a genuine-looking robot dog with lots of entertaining plays. You may attach various sensors to an Arduino board that has been specially made to coordinate all instinctive and complex actions to add perception.

Visit us: https://www.petoi.com/collections/robots

#Programmable Robot Dog #programmable robot #Petoi programmable robot #programmable robot kits for adults #programmable robot for kids #programmable robot for adults #programmable robot dog #best programmable robot

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craftyhandyosr · 10 months ago

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We are new 3D printing studio called “Crafty Handy”.

We can undertake all kinds of 3D printing projects, whether it is small figurines or large models. Their printing quality is very high and the price is very reasonable. If you are interested, you can click the link below to check out their work and services.

For friends who love OSR devices, We website has specially prepared many complete material packages suitable for DIY enthusiasts.

The good news is that their website is holding a discount event.

The event lasts from July 15th to August 15th. During this period, each of their material kit orders will receive a discount of $15. The lowest price for the OSR2 material package is $65, and the lowest price for the SR6 material package is $105. In addition, exquisite figurines and ESP32 expansion boards are also available as gifts. Don’t miss this opportunity!

At present, they provide mainstream printing materials for everyone to choose from. If you have special requirements, please contact them through the website email. To thank everyone for their support, they have also prepared a lot of exquisite small gifts, first come first served!

With their material kit, you can make your own OSR equipment, including materials such as DSservo 25KG digital servo, you can enjoy the fun of assembly, which requires a certain degree of hands-on ability. If you don’t like to assemble it yourself, they also provide paid assembly services. Our kits have a variety of themes, and you can choose what you are interested in. Thank you for providing a space for communication in the forum, and I hope the forum will continue to flourish.

Our website is available in English, Korean, and Japanese. If you have any questions, please feel free to contact them.

For more details, please visit their website:

#sr6 #Material Kit #diy #osr2 #Mechanics

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svsembedded · 1 year ago

Video

youtube

IoT Web based Smart Shopping🛒Trolley with ESP32-CAM QR Code Mobile📱Cart Application | iot based smart shopping cart using rfid and nodemcu | smart trolley using barcode scanner | smart car parking system using arduino literature review | rfid based car parking system using arduino and vb.net | smart shopping cart | Trolley for malls near me | Foldable Trolley for Shopping | Grocery Trolley with Wheels | Supermarket Trolley manufacturers | Shopping Trolley Bag | Mall Trolley price | IOT BASED SMART SHOPPING TROLLEY | IOT Based Smart Shopping Trolley for Mall.***********************************************************If You Want To Purchase the Full Working Project KITMail Us: [email protected] Name Along With You-Tube Video LinkWe are Located at Telangana, Hyderabad, Boduppal. Project Changes also Made according to Student Requirementshttp://svsembedded.com/  https://www.svskits.in/ http://svsembedded.in/  http://www.svskit.com/M1: 91 9491535690  M2: 91 7842358459 We Will Send Working Model Project KIT through DTDC / DHL / Blue Dart / First Flight Courier ServiceWe Will Provide Project Soft Data through Google Drive1. Project Abstract / Synopsis 2. Project Related Datasheets of Each Component3. Project Sample Report / Documentation4. Project Kit Circuit / Schematic Diagram 5. Project Kit Working Software Code6. Project Related Software Compilers7. Project Related Sample PPT’s8. Project Kit Photos9. Project Kit Working Video linksLatest Projects with Year Wise YouTube video Links157 Projects  https://svsembedded.com/ieee_2022.php135 Projects  https://svsembedded.com/ieee_2021.php 151 Projects  https://svsembedded.com/ieee_2020.php103 Projects  https://svsembedded.com/ieee_2019.php61 Projects  https://svsembedded.com/ieee_2018.php171 Projects  https://svsembedded.com/ieee_2017.php170 Projects  https://svsembedded.com/ieee_2016.php67 Projects  https://svsembedded.com/ieee_2015.php55 Projects  https://svsembedded.com/ieee_2014.php43 Projects  https://svsembedded.com/ieee_2013.php1100 Projects https://www.svskit.com/2022/02/900-pr...***********************************************************1. Smart Shopping Trolley with Automated Billing using Arduino2. RFID Based Smart Shopping Cart Using Arduino | RC5223. Automated Smart Trolley with Smart Billing Arduino | RFID4. IoT based Smart Shopping Cart using RFID and NodeMCU5. RFID based Shopping trolley6. IoT based Smart Door Lock System using NodeMCU7. IOT Based Smart Attendance System Project using NodeMCU ESP82668. DIY Smart Wi-Fi Video Doorbell using ESP32 and Camera9. IoT based Fire Alarm System Project using NodeMCU ESP826610. The Internet of Things with ESP32 | webserver | IoT Design Pro11. IoT based Smart Irrigation System using Soil Moisture Sensor12. Moduino X Series - Industrial IoT module based on ESP3213. Iot Home Automation Using ESP-32 with videos (Hindi

#youtube #https://www.youtube.com/watch?v=qap4AS3O8oM

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adafruit · 10 months ago

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Double your Wi-Fi, double your fun, with two ESP32 Trinkeys 🔧🔌🖥️

These two ESP32 trinkeys look similar, but they're not the same! Yes - both plug into USB A ports, both have reset and user buttons, a NeoPixel and red LED, plus a STEMMA QT I2C port and 3-pin JST SH for analog/digital/PWM. they both contain a CH343P + dual NPN FET for auto-reset circuitry…but one has an ESP32 Pico N8R2 (https://www.digikey.com/short/9ppmnh07) and the other is an ESP32 Mini N4 (https://www.digikey.com/short/31m1drf8). the first module is smaller and contains 8 MB of QSPI flash + 2 MB of PSRAM. The second is larger but only has 4 MB of flash and no PSRAM. why have both? cause the Mini is significantly less expensive, $2.30 vs $3.50, which adds $3 to the final price. For CircuitPython usage, the PSRAM is essential - but for plain C/C++ development, you can get away with skipping. either way, these could be handy little boards for creating sensor nodes that plug into a wall outlet, with easy extensibility for I2C or analog/digital/PWM I/O!

#adafruit #esp32 #neopixel #trinkey #usb #wifi #dualtrinkeys #iot #sensors #circuitpython #developer #electronics #usbports #i2cconnectivity #diyprojects #makercommunity

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sb-components · 2 years ago

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UHF Reader Based On Pico W / ESP32 At Best Price

Introducing the UHF Reader, the rapid multi-tag reading device that is revolutionizing how you manage your inventory. With a range of up to 1.5 meters and the ability to read 50 tags in just 50 seconds, the UHF Reader is the ultimate solution for efficient and effective inventory management.

Designed with cutting-edge UHF technology, this reader is capable of capturing and processing vast amounts of data from RFID tags, allowing you to accurately and quickly identify your inventory items, streamline your operations, and boost your productivity.

Whether managing a large warehouse, retail store, or any other business with high-volume inventory, the UHF Reader will simplify your work, save you time and money, and improve your overall performance.

The UHF Reader is ideal for a wide range of industries and applications, including Warehousing and logistics, Retail, Manufacturing, etc.

The device is compact, portable, and easy to use, with a user-friendly interface that requires minimal training. Its rugged construction and reliable performance make it a durable and dependable choice for any business, and its compatibility with most existing RFID tags means you can start using it immediately.

Don't waste any more time manually tracking your inventory. Invest in the UHF Reader today and take your business to the next level.

#UHF reader #NFC #Diy #Diy Electronics #electronics #raspberry pi pico #electronics components #raspberry pi #technology

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this-week-in-rust · 2 years ago

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This Week in Rust 502

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week's issue, please submit a PR.

Updates from Rust Community

Official

Rustfmt support for let-else statements

Newsletters

This Month in Rust GameDev #46 - May 2023

Project/Tooling Updates

rust-analyzer changelog #188

Pavex DevLog #5: redesigning our runtime types

Bevy XPBD: A physics engine for the Bevy game engine

complgen: Generate {bash,fish,zsh} completions from a single EBNF-like grammar

projectable: a command line TUI file manager

Observations/Thoughts

How To Wrap Your Errors With Enums When Using Error-Stack

Exploring Graphs in Rust. Yikes

Writing a Linked List in Rust: A Walkthrough

Tree-Structured Concurrency

Rust Notes on Temporary values (usage of Mutex) - 4

Method Overloading (kinda), and Advanced Trait Usage

Unlocking Possibilities: 4 Reasons Why ESP32 and Rust Make a Winning Combination

The magic of dependency resolution

Writing E2E Tests for Axum & GraphQL

Detailed web-based 3D rendering of mining spatial data

[video] Choose the Right Option

[video] 4 levels of Rust error handling

Rust Walkthroughs

Build a Ray Tracer, pt. 4 - The Next Dimension

Nine Rules for Running Rust on the Web and on Embedded: Practical Lessons from Porting range-set-blaze to no_std and WASM

Full Stack Rust Workshop: Shuttle, Actix Web, SQLx & Diouxus

Intercepting Allocations with the Global Allocator

A compressed indexable bitset

A persistent task queue in Rust

How I finally understood async/await in Rust (part 2: how does a pending future get woken?)

Miscellaneous

Verify Rust code in VS Code with the Kani VS Code extension

Reduce memory footprint by about 600% for M.E.D. — Performance Matters

New MeetUp Group in Canada: Rust Halifax

Crate of the Week

This week's crate is rustypaste, a minimal file upload/pastebin service.

Thanks to orhun for the self-suggestion!

Please submit your suggestions and votes for next week!

Call for Participation

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

diesel - Most wanted missing features in diesel 1

diesel - Most wanted missing guide topic 1

css-inline - C bindings

mfcc-rust - create npy files for testing the input and output of cacheable functions

mfcc-rust - make all functions generic over f32 and f64

mfcc-rust - migrate mfcc to depend on mel_spectrogram

ockam - Change argument for ockam credential issue command from Identity to IdentityIdentifier 2

ockam - Use a background node for ockam project enroll 1

ockam - ockam project ticket should return a proper error message 1

RustQuant - Logistic regression is too slow (specifically the matrix inversions).

RustQuant - Implement a user interface (TUI or GUI).

RustQuant - Implement a Postgres interface. 1

RustQuant - Pricing model calibration module.

RustQuant - Add/improve documentation (esp. math related docs).

RustQuant - Increase test coverage (chore). 1

RustQuant - Compute returns from Yahoo finance data reader.

mirrord - mirrord shows loopcrashbackoff pods as possible targets 1

mirrord - Log problem in layer and exit when agent image is not found 1

Hyperswitch - Implement Code coverage for local system using Makefile

Hyperswitch - Add scoped error enum for customer error

Hyperswitch - move redis key creation to a common module

If you are a Rust project owner and are looking for contributors, please submit tasks here.

Updates from the Rust Project

410 pull requests were merged in the last week

support embedding LLVM bitcode on AIX

support for native WASM exceptions

fix(resolve): skip assertion judgment when NonModule is dummy

thir: Add Become expression kind

account for late-bound vars from parent arg-position impl trait

add -Zremark-dir unstable flag to write LLVM optimization remarks to YAML

add bidirectional where clauses on RPITIT synthesized GATs

add check for ConstKind::Value(_) to in_operand()

avoid calling queries during query stack printing

better messages for next on a iterator inside for loops

detect actual span for getting unexpected token from parsing macros

don't perform selection if inherent associated types are not enabled

don't suggest move for borrows that aren't closures

encode item bounds for DefKind::ImplTraitPlaceholder

error when RPITITs' hidden types capture more lifetimes than their trait definitions

export AnalysisResults trait in rustc_mir_dataflow

fix dropping_copy_types lint from linting in match-arm with side-effects

fix associated items effective visibility calculation for type privacy lints

fix type privacy lints error message

fix unset e_flags in ELF files generated for AVR targets

implement deep normalization via the new solver

implement most of MCP510

implement proposed API for proc_macro_span

implement selection via new trait solver

lint/ctypes: ext. abi fn-ptr in internal abi fn

make associated type bounds in supertrait position implied

make compiletest aware of targets without dynamic linking

make the Elaboratable trait take clauses

normalize opaques with late-bound vars again

normalize types when applying uninhabited predicate

privacy: type privacy lints fixes and cleanups

properly implement variances_of for RPITIT GAT

refactor metadata emission to avoid visiting HIR

resolve: remove artificial import ambiguity errors

simplify computation of killed borrows

suggest slice::swap for mem::swap(&mut x[0], &mut x[1]) borrowck error

add suggestion for bad block fragment error

use structured suggestion when telling user about for<'a>

mark wrapped intrinsics as inline(always)

make simd_shuffle_indices use valtrees

make UnwindAction::Continue explicit in MIR dump

mir opt + codegen: handle subtyping

miri: cargo-miri: better error message when RUSTC is not set

miri: make --quiet actually do something

miri: optional semantics for Unique

shrink error variants for layout and fn_abi

a mish-mash of micro-optimizations

codegen_gcc: add support for #[cold] attribute

allow comparing Boxes with different allocators

make rustc_on_unimplemented std-agnostic

stabilize const_cstr_methods

cargo: add READMEs for the credential helpers

cargo: don't try to compile cargo-credential-gnome-secret on non-Linux platforms

rustdoc: fix display of long items in search results

rustdoc: fix display of long inline cfg labels

rustdoc: allow whitespace as path separator like double colon

rustdoc: render generic params & where-clauses of cross-crate assoc tys in impls

rustfmt: don't skip semicolon if expressions follow

rustfmt: implement single_line_let_else_max_width

rustfmt: rewrite float literals ending in dots with parens in method calls

rustfmt: switch to tracing for logging

clippy: new lints: manual_try_fold, needless_raw_string_hashes, redundant_at_rest_pattern, tuple_array_conversions, manual_range_patterns, type_id_on_box, needless_pub_self, pub_with_shorthand and pub_without_shorthand

clippy: significant_drop_tightening: fix incorrect suggestion

clippy: arc_with_non_send_sync: don't lint if type has nested type parameters

clippy: let_and_return: lint 'static lifetimes, don't lint borrows in closures

clippy: missing_fields_in_debug: make sure self type is an adt

clippy: needless_raw_string_hashes: only reset hashes needed if not following quote

clippy: option_if_let_else: suggest .as_ref() if scrutinee is of type &Option<_>

clippy: question_mark: don't lint inside of try block

clippy: unused_async: don't lint if function is part of a trait

clippy: useless_vec: add more tests and don't lint inside of macros

clippy: useless_vec: use the source span for initializer

clippy: don't lint manual_let_else in cases where ? would work

clippy: don't lint code from external macros for 8 lints

clippy: make eq_op suggest .is_nan()

clippy: suggest is_some_and over map().unwrap

rust-analyzer: check Workspace Edit ResourceOps

rust-analyzer: disable mir interpreter for targets with different pointer size from host

rust-analyzer: editor/code: enable noImplicitOverride ts option

rust-analyzer: editor/code: use @tsconfig/strictest to define type checking rules

rust-analyzer: don't add panics to error jump list by default

rust-analyzer: fix self and super path resolution in block modules

rust-analyzer: fix data layout of reference to nested unsized structs

rust-analyzer: fix layout of simd types and respect align in mir interpreter

rust-analyzer: fix overflow checking in shift operator

rust-analyzer: fix panic in handle_code_action

rust-analyzer: fix realloc problem in allocating smaller amounts

rust-analyzer: fix runnable detection for #[tokio::test]

rust-analyzer: follow raw pointers in autoderef chain when resolving methods with custom receiver

rust-analyzer: map our diagnostics to rustc and clippy's ones

rust-analyzer: support #[derive_const(Trait)]

Rust Compiler Performance Triage

A quiet week, with a mixed set of improvements and regressions. Overall slightly more improvements than regressions.

Triage done by @simulacrum. Revision range: b5e51db16..52d8c490

4 Regressions, 4 Improvements, 2 Mixed; 0 of them in rollups

51 artifact comparisons made in total

Full report here

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now.

RFCs

[disposition: merge] RFC: Start working on a Rust specification

Tracking Issues & PRs

[disposition: merge] Enable coinduction support for Safe Transmute

[disposition: close] feat: split unsafe_code lint into lint group

[disposition: merge] Correct the Android stat struct definitions

New and Updated RFCs

[new] Create a Testing sub-team

[new] Add f16 and f128 float types

[new] RFC: Nested Cargo packages

[new] Additional float types

Call for Testing

No RFCs issued a call for testing this week.

Upcoming Events

Rusty Events between 2023-07-05 - 2023-08-02 🦀

Virtual

2023-07-05 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

2023-07-05 | Virtual (Stuttgart, DE) | Rust Community Stuttgart

Rust-Meetup

2023-07-06 | Virtual (Ciudad de México, MX) | Rust MX

Rust y Haskell

2023-07-11 | Virtual (Buffalo, NY, US) | Buffalo Rust Meetup

Buffalo Rust User Group, July Meetup

2023-07-11 | Virtual (Dallas, TX, US) | Dallas Rust

Second Tuesday

2023-07-11 - 2023-07-13 | Virtual (Europe) | Mainmatter

Web-based Services in Rust, 3-day Workshop with Stefan Baumgartner

2023-07-13 - 2023-07-14 | Virtual | Scientific Computing in Rust

Scientific Computing in Rust workshop

2023-07-13 | Virtual (Edinburgh, UK) | Rust Edinburgh

Reasoning about Rust: an introduction to Rustdoc’s JSON format

2023-07-13 | Virtual (Nuremberg, DE) | Rust Nuremberg

Rust Nürnberg online #27

2023-07-18 | Virtual (Berlin, DE) | OpenTechSchool Berlin

Rust Hack and Learn

2023-07-19 | Virtual (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

2023-07-20 | Virtual (Tehran, IR) | Iran Rust Meetup

Iran Rust Meetup #12 - Ownership and Memory management

2023-07-25 | Virtual (Dallas, TX, US) | Dallas Rust

Last Tuesday

Asia

2023-07-08 | Bangalore, IN | Rust India

Rust India monthly meetup

Europe

2023-07-05 | Lyon, FR | Rust Lyon

Rust Lyon Meetup #5

2023-07-11 | Breda, NL | Rust Nederland

Rust: Advanced Graphics and User Interfaces

2023-07-13 | Berlin, DE | Rust Berlin

Rust and Tell - beer garden Edition

2023-07-13 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup at Browns

2023-07-21 | Nuremberg, DE | Rust Nuremberg

Rust Nuremberg Get Together #2

North America

2023-07-07 | Chicago, IL, US | Deep Dish Rust

Rust Lunch

2023-07-12 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

2023-07-12 | Waterloo, ON, CA | Rust KW

Overengineering FizzBuzz

2023-07-13 | Lehi, UT, US | Utah Rust

Writing Kuberenetes Operators in Rust

2023-07-13 | Mountain View, CA, US | Mountain View Rust Meetup

Rust Meetup at Hacker Dojo

2023-07-13 | Seattle, WA, US | Seattle Rust User Group

July Meetup

2023-07-18 | San Francisco, CA, US | San Francisco Rust Study Group

Rust Hacking in Person

Oceania

2023-07-11 | Christchurch, NZ | Christchurch Rust Meetup Group

Christchurch Rust meetup meeting

2023-07-11 | Melbourne, VIC, AU | Rust Melbourne

(Hybrid - in person & online) July 2023 Rust Melbourne Meetup

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who's Hiring thread on r/rust

Quote of the Week

I'm not here to tell you that Rust is the best language....... you should have figured that out by now.

– Jester Hartman on youtube

Thanks to newpavlov for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, andrewpollack, U007D, kolharsam, joelmarcey, mariannegoldin, bennyvasquez.

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

#rust-lang #rust #rustlang #twir #long post

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