@JeremyCook @aymen ammari have you all been working on similar systems?
@JeremyCook @aymen ammari have you all been working on similar systems?
TOh 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?
Otherwise @wafa_ath and @Renuel Roberts have Pis.
Do you have a Pi of your own? If so, which one?
UHere'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.
Rhttps://www.valvers.com/open-software/raspberry-pi/bare-metal-programming-in-c-part-1/
http://www.cl.cam.ac.uk/projects/raspberrypi/tutorials/os/
http://www.cl.cam.ac.uk/projects/raspberrypi/tutorials/os/
Various information about engineering and computing things. Just tid-bits from an enthusiast
MIf 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.
they go well into building drivers.
GitHub
Learning operating system development using Linux kernel and Raspberry Pi - s-matyukevich/raspberry-pi-os
GitHub
:books: Learn to write an embedded OS in Rust :crab: - rust-embedded/rust-raspberrypi-OS-tutorials
DI have RPi3 and 5
DPICO 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!
Wanted to learn and explore processor bare-metal to strengthen the concepts of processors.
Thanks for the help @Umesh Lokhande !
Dhanyawad!
DNever tried Rust
, will follow the first link.. looks interesting..
Thanks @32bitSaviour !
, will follow the first link.. looks interesting..Thanks @32bitSaviour !
J@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.
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.
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.
Sfor basic web development, should i learn java script or just go with python flask,html?
KAny 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.
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
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
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.
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
&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
AI 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?
T@Navadeep may have something to add
N
ACan 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.
TThis is a warning; put this type of post in #jobs. I am deleting it.
ACan 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
Ahow ?
KHey everyone,
check out my experiences at the Hong Kong Electronics Fair:
check out my experiences at the Hong Kong Electronics Fair:
K
TAre you back in Belgium?
THey @Event Pings and @Middleware & OS get ready for today’s Engineering Hour on message queues and intertask communication in FreeRTOS! It starts in 30 minutes here: https://app.livestorm.co/devheads-community/devheads-weekly-office-hours-1
What questions do you have for Umesh?
What questions do you have for Umesh?
DevHeads IoT Integration Server
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FHey guys,it's a pleasure to join your community.I'm embedded system engineer ,want to learn and share experience.
CWelcome @Fatogoma !
F@Camila_99$$ Thank you.
NThat's a quite widespread(or lets say broadband ;)) question - interesting play you're into.
As I understand you want to make a 1 bit SDR having PDM signal generated again from a 1-bit ADC. Now you want to mix it with a LO which was fine, but also want to take PDM signal as a mixing reference?
If wanting for a SDR, how about converting your PDM with a low-pass filter or a CIC filter in digital logic implementation.
As I understand you want to make a 1 bit SDR having PDM signal generated again from a 1-bit ADC. Now you want to mix it with a LO which was fine, but also want to take PDM signal as a mixing reference?
If wanting for a SDR, how about converting your PDM with a low-pass filter or a CIC filter in digital logic implementation.
KSo why this is interesting is it implies I could mix digitally before conversion - I already have a pipeline established that can do nyquist zone selection and down conversion - but I have to do a bit of downconversion before the data is at a rate that I can run filters on it - that part of the chain is not flexible
If I can digitally mix at the fpga input pin with this technique I can work around that and make the whole receiver more configurable
If I can digitally mix at the fpga input pin with this technique I can work around that and make the whole receiver more configurable
MAn arduino uno rr4 wifi to blynk platform , dynamically changing the wifi network name and password without altering the code is feasible , just that it requires the use of a wifi provisioning feature, somewhat like a blynk edgent library. Heard of Blynk.Edgent? Dat is designed for dynamic wifi management, it will wat wil make this work
AYes I heard about it and used it on esp32 but it doesn't support arduino uno r4 wifi
MYou sure about that ?
AYes I am sure, there is another library for embedded MCUs called blynk.ncp but I don't know how to use it if you know can you help me?
MThen you should use Arduino IoT Cloud
AIs it possible to change the wifi network through the arduino iot cloud application?
GHi, can anyone help me program a circuit? I'm a beginner and I have no idea how to do it
TWhat kind of circuit?
KNope. Still in Shenzhen.
MIt will allow u to manage device settings, u can add ur wifi credentials there too, and u wont have to be uploading new code each time you doin it. you can update the wifi network name SSID and password directly from the dashboard there
MHow do I resolve this error ?
ADo you mean that I can change it through the word network or is there another way?
G
GThe circuit has a buzzer, an LED, 1 button (which is like a sensor), 1 button which is like a reset, an LCD screen, a switch and a Potentiometer. The project has to work as follows, as soon as I start simulating the project (which will be in Tinkercad) the word count and the zero below will appear on the LCD screen, as soon as I press the button that serves as a sensor, the counter it will show 1, ring the buzzer and turn on the LED at the same time and so on continuously, if for example I press the button 5 times, each time it is pressed it will appear on the LCD, depending on the time that the potentiometer marks and the buzzer and LED turn on together. The Potentiometer will serve as time in seconds to carry out the count, so for example if the Potentiometer has a delay of 4000 and I press the button, the counter will only show on the LCD after 4 seconds and the buzzer and the LED will also ring (the Potentiometer goes from 0 to 4000). When I press the switch down, it will show the Potentiometer information on the screen with the word Potentiometer at the top and the count in seconds below and when I move it up the switch will show the counter on the screen again. The other button will reset the counter
ZNice plan, where are you currently having issues?
MYh that network section is where u should enter ur wifi information
MOnce you enter the SSID which is ur network name and then password, click that configure button to save the changes thrn try to connect to the new network
GI don't really know how to program what I want to do, I needed someone to help me program
ZAh I see, I doubt you will find someone to help with that,
However if you are learning how to program and are stuck let us know we may be able to help.
However if you are learning how to program and are stuck let us know we may be able to help.
GYes, I'm in the process, but I only know the basics, but I appreciate your attention
AThnx for help
AI don't know how to flash arduino uno r4 wifi can someone help me?
AI don't know how to do step 4
Z@32bitSaviour @Ming Is yocto just
west