DevHeads IoT Integration Server•15mo ago

When I connect the Arduino uno R4 wifi to the computer, the connected COM does not appear, knowing t

When I connect the Arduino uno R4 wifi to the computer, the connected COM does not appear, knowing that I connected the ESP32 and the Arduino uno and they work without a problem. What is the solution in the Arduino uno R4 wifi?

AbdullahOP•10/17/24, 6:17 PM

Michael W•10/18/24, 12:19 AM

Hey guys, new here!

Michael W•10/18/24, 12:20 AM

I'm here to learn a bit more on doing PCB design on some automotive PCB's I'm wanting to make

MMichael W Hey guys, new here!

techielew•10/18/24, 12:45 AM

Welcome, Michael. @hemalchevli @Navadeep and @Joseph Ogbonna are good resources for you. Do you have any specific Qs to get started?

Ttechielew Welcome, Michael. @hemalchevli @Navadeep and @Joseph Ogbonna are good resources ...

Michael W•10/18/24, 12:48 AM

I don't right now. Biggest thing is trying to learn more of PCB design.

MMichael W I don't right now. Biggest thing is trying to learn more of PCB design.

techielew•10/18/24, 1:02 AM

What's your background?

Ttechielew What's your background?

Michael W•10/18/24, 1:07 AM

I'm a system administrator/engineer, mainly dealing with computer networks. I'm a hobbiest and attempt to teach myself new things all the time. I've done some arduino programming and a bit of a gear head. I've developed a digital dashboard using a RK3399 from Firefly for a car that I'm doing a retro mod on. I've gotten to a point where I feel my next step in doing what I'm wanting to do with it will require me to make my own PCB's because the things I'm wanting don't exist. I would say I'm a novice to intermediate with PCB components, where I understand what things are and can look at schematics or wiring diagrams and understand them.

AAbdullah When I connect the Arduino uno R4 wifi to the computer, the connected COM does n...

Umesh Lokhande•10/18/24, 4:26 AM

Have you tried to uninstall and re-install the Arduino IDE? to make sure that all dependencies got installed properly. especially, that show up after the installation. Also, make sure to Install your board's Package Core.

MMichael W I'm a system administrator/engineer, mainly dealing with computer networks. I'm...

techielew•10/18/24, 5:18 AM

What are the things you're wanting?

techielew•10/18/24, 5:18 AM

Specifically

ZacckOsiemo•10/18/24, 5:22 AM

Would anyone care to see a side by side comparison of FreeRTOS and Zephyr? I have always wondered what would we see if we took two operating systems and implemented the same kind of system on same kind of hardware.

ZZacckOsiemo Would anyone care to see a side by side comparison of FreeRTOS and Zephyr? I hav...

melta101•10/18/24, 5:38 AM

i think i have a analysis between threadX/zephyr/FreeRTOS by benningo

melta101•10/18/24, 5:39 AM

https://www.beningo.com/rtos-performance-report-2024-now-available/

Beningo Embedded GroupJacob Beningo

RTOS Performance Report (2024) – Now Available | Beningo Embedded

The RTOS Performance Report is an in-depth benchmarking analysis of RTOSes and their performance across key areas to embedded systems, including:

Mmelta101 i think i have a analysis between threadX/zephyr/FreeRTOS by benningo

ZacckOsiemo•10/18/24, 5:51 AM

yeah this is cool but this is also a bit obviously skewed, I am wondering about demoing like specific features say we have a mutex problem and we try to solve it with FreeRTOS and Zephyr but on the same architecture

ZacckOsiemo•10/18/24, 5:53 AM

Say something like 2 tasks wants to share 2 uart to communiicate with a terminal, we could implement this on stm32f4 on zephyr and same on stm32f4 on freertos, then step back and look at the differences between both approaches, would you be keen on that @melta101

ZacckOsiemo•10/18/24, 5:53 AM

It's like when we used to do the same app on react, elm, vue, angular then benchmark.

ZZacckOsiemo Say something like 2 tasks wants to share 2 uart to communiicate with a terminal...

melta101•10/18/24, 6:05 AM

makes sense
it would little more real world application in that way too.

Mmelta101 makes sense it would little more real world application in that way too.

ZacckOsiemo•10/18/24, 6:06 AM

would you do it any different?

Mmelta101 makes sense it would little more real world application in that way too.

ZacckOsiemo•10/18/24, 6:07 AM

or in other words, what would you compare between freertos and zephyr

ZZacckOsiemo or in other words, what would you compare between freertos and zephyr

melta101•10/18/24, 6:12 AM

I would like compare pwr consumption, time taken for a message to pass using ipc

melta101•10/18/24, 6:13 AM

Few things like these come to my mind

Mmelta101 I would like compare pwr consumption, time taken for a message to pass using ipc

ZacckOsiemo•10/18/24, 6:15 AM

that's even better!

melta101•10/18/24, 6:17 AM

Metrics in the form that would help people who like project manager who care about real world aspect in comparison
Above are a few I could think so

melta101•10/18/24, 6:18 AM

Network testing

melta101•10/18/24, 6:19 AM

Could compare network stacks if time allows

Mmelta101 I would like compare pwr consumption, time taken for a message to pass using ipc

Umesh Lokhande•10/18/24, 6:35 AM

maybe it would be interesting to see how different feature's been used in frameworks like FreeRTOS & Zephyr. How things are handled differently from configuration to handling common issues.

UUmesh Lokhande maybe it would be interesting to see how different feature's been used in framew...

melta101•10/18/24, 6:36 AM

capabilities comparison
that is nice

Mohan•10/18/24, 10:15 AM

Have anyone worked with nucleo board using mangoose library connect with aws iot

Nnour_oud 🗓️ Friendly Reminder about the Upcoming Event https://discord.gg/FtYdMP4K?eve...

techielew•10/18/24, 2:35 PM

Hey @Event Pings, we're going to be getting started with this week's Office Hours in about 30 minutes.

Excited to hear from @Middleware & OS devs in particular to come share your experiences with open source technology, and perhaps lend some tips to your fellow devs so they can avoid any OSS pitfalls in their development.

techielew•10/18/24, 2:35 PM

Here's a link: https://app.livestorm.co/devheads-community/devheads-weekly-office-hours-1/live?s=5db2b93e-64e2-4066-accc-6ca69b940a6e

DevHeads Weekly Office Hours: Common Misconceptions of Open Source ...

dino•10/18/24, 5:22 PM

Hello all,
Any idea from where I can get better hands-on experience in RPi bare metal?
Wanted to learn from scratch, one of the colleague suggested try RPi bare metal - printing Hello world on RPi baremetal, then I'll get better idea about device drivers, cpu, systick, any other topics.
Thanks in advance for your help!

Dũng•10/19/24, 1:56 AM

Hello all,
I want to use an adc ic to get audio data from mic but i don't find any suitable ic, can anyone help me in this problem?
Thanks all for your help!

DDũng Hello all, I want to use an adc ic to get audio data from mic but i don't find a...

techielew•10/19/24, 5:29 AM

@JeremyCook @aymen ammari have you all been working on similar systems?

Ddino Hello all, Any idea from where I can get better hands-on experience in RPi bare...

techielew•10/19/24, 5:31 AM

Oh there should be plenty to help out with this, DINO, but @Umesh Lokhande would probably have a good idea of where to start or some sessions we may be able to put together around the topic since he's built training sessions on Pi before.

Otherwise @wafa_ath and @Renuel Roberts have Pis.

Do you have a Pi of your own? If so, which one?

Ddino Hello all, Any idea from where I can get better hands-on experience in RPi bare...

Umesh Lokhande•10/19/24, 6:11 AM

Here's a playlist to learn bare-metal programming of RPi https://www.youtube.com/playlist?list=PLVxiWMqQvhg9FCteL7I0aohj1_YiUx1x8. Personally, I'd prefer PICO over RPi3/4/5 to learn bare-metal. If you're a little bit experienced then maybe it's fine to choose regular RPi.

Ddino Hello all, Any idea from where I can get better hands-on experience in RPi bare...

Renuel Roberts•10/19/24, 7:25 AM

https://www.valvers.com/open-software/raspberry-pi/bare-metal-programming-in-c-part-1/

http://www.cl.cam.ac.uk/projects/raspberrypi/tutorials/os/

BMC Part 1 - Getting Started - valvers.com

Various information about engineering and computing things. Just tid-bits from an enthusiast

Ddino Hello all, Any idea from where I can get better hands-on experience in RPi bare...

Marvin•10/19/24, 8:01 AM

If you are up for an adventure https://github.com/s-matyukevich/raspberry-pi-os or the Rust version https://github.com/rust-embedded/rust-raspberrypi-OS-tutorials

they go well into building drivers.

GitHub

GitHub - s-matyukevich/raspberry-pi-os: Learning operating system d...

Learning operating system development using Linux kernel and Raspberry Pi - s-matyukevich/raspberry-pi-os

GitHub

GitHub - rust-embedded/rust-raspberrypi-OS-tutorials: :books: Learn...

:books: Learn to write an embedded OS in Rust :crab: - rust-embedded/rust-raspberrypi-OS-tutorials

Ttechielew Oh there should be plenty to help out with this, DINO, but @Umesh Lokhande would...

dino•10/19/24, 8:03 AM

I have RPi3 and 5

UUmesh Lokhande Here's a playlist to learn bare-metal programming of RPi <https://www.youtube.co...

dino•10/19/24, 8:05 AM

PICO is a controller, I am currently learnig bare-metal for Nucleo L4 series via udemy course.
Wanted to learn and explore processor bare-metal to strengthen the concepts of processors.

Thanks for the help @Umesh Lokhande !
Dhanyawad!

MMarvin If you are up for an adventure https://github.com/s-matyukevich/raspberry-pi-os ...

dino•10/19/24, 8:09 AM

Never tried Rust

, will follow the first link.. looks interesting..

Thanks @32bitSaviour !

Ttechielew @JeremyCook @aymen ammari have you all been working on similar systems?

JeremyCook•10/19/24, 12:49 PM

@Dũng I don't know that I've ever set up a microcontroller to record audio (just play it back), but I believe there are a lot of chips/boards that are capable or such operation. Searching around, here's one example with a Raspberry Pi Pico/RP2040 https://www.electromaker.io/project/view/raspberry-pi-pico-audio-recordplaywav-file of doing what I think you want to do, though there are a few external components involved. Also, IIRC, the RP2040 uses storage on an external chip, so you would need that available.

Or if you mean just responding to keywords for IoT control etc, I believe there are a lot of examples with Arduino Hardware, such as the Nicla Voice: https://docs.edgeimpulse.com/docs/edge-ai-hardware/mcu-+-ai-accelerators/arduino-nicla-voice

There are definitely options, but where you go depends on the project specifics.

Raspberry Pi Pico Audio Record, Play, Wav File

This project has been designed to be a very simple and easy to understand, audio recording and playback system. Using a Raspberry Pi Pico and C programming language. It has the added facility to also save WAV formatted files, which can be played directly on Linux, Windows & Mac OS.

Arduino Nicla Voice | Edge Impulse Documentation

shin-de•10/19/24, 2:46 PM

for basic web development, should i learn java script or just go with python flask,html?

ke7c2mi•10/19/24, 5:03 PM

Any DSP nerds around?

I've been messing about with concepts related to 1 bit ADCs recently out of some curiosity

In playing around, I realised that when we are dealing with 1 bit signals, the and operator and multiplication are orthogonal i.e.

0&0 = 0       0*0 = 0
0&1 = 0       0*1 = 0 
1&0 = 0       1*0 = 0
1&1 = 1       1*1 = 1

0&0 = 0       0*0 = 0
0&1 = 0       0*1 = 0 
1&0 = 0       1*0 = 0
1&1 = 1       1*1 = 1

Now for a mixer, we want to multiply some signal, by some LO complex signal, and get the output mixed complex signal

So - the question becomes:

If I take a PDM (pulse density modulation) signal and LO, and && them together - do I get a mixer.

The answer seems to be yes..

This is a little side tangent from a project where I am trying to make a 1 bit SDR, now I think I need to add as a stretch goal trying to make a digital mixer like this

In theory, I can take a 1 bit signal into LVDS+ on an FPGA LVDS channel and inject whatever noise or signal on the other signal. To just make PDM, we want to put white noise in there, that works fine. But this tells me maybe there is an opportunity to make a mixer feeding PDM signals in instead of noise.

I wonder if anyone tried something like this or has some thoughts related to it. There is prior art for simply making 1 bit ADC using FPGA channels but I haven't found any literature related to this.

P.S. there are a lot of harmonics - they are mostly from the 1bit conversion and can be mitigated to some extent with MORE NOISE, I am ready to find out that even though it can kind of work, it cannot work well enough to ever be useful, but where is there is too much fun finding out the hard way

AbdullahOP•10/19/24, 5:14 PM

I have connected the arduino r4 wifi to the iot cloud arduino. How can I change the password and email without changing the code? Can you help me?

Kke7c2mi Any DSP nerds around? I've been messing about with concepts related to 1 bit AD...

techielew•10/19/24, 5:43 PM

@Navadeep may have something to add

nour_oud•10/19/24, 7:35 PM

Friendly Reminder about the Upcoming Event
https://discord.gg/J3qdZNg9?event=1287418889134805063

AbdullahOP•10/19/24, 9:13 PM

Can someone help me? I am using arduino uno r4 wifi. I want to change the wifi semi via iot remote arduino or blynk app. I am tired of searching. I did not find a clear way.

Original message was deleted

techielew•10/19/24, 9:15 PM

This is a warning; put this type of post in #jobs. I am deleting it.

UUmesh Lokhande You don't need to modify any file. All you should do is edit your code with upda...

AbdullahOP•10/20/24, 2:22 AM

Can you explain this method to me more or send me a blog or a video clip that explains it, where do I get the OTA file from and how do I make it support arduino uno r4 wifi and how do I enter the wifi network name and password? Please, I really need this. I want to change the wifi network name and password on blynk or iot remote arduino through the phone application

MMarvee Amasi Yes very possible

AbdullahOP•10/20/24, 3:55 AM

how ?

When I connect the Arduino uno R4 wifi to the computer, the connected COM does not appear, knowing t

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