no its not

Saßì•3/27/24, 7:13 AM

@josr Welcome! Can you let us know a bit about your technical background, what brings you to DevHeads, and what you're looking to learn/contribute?!

HarmonySoftware•3/27/24, 7:15 AM

Hey everyone! I'm new here, and returning to the development field to learn more about the backend processes behind the AI revolution

youcef_ali•3/27/24, 9:14 AM

Hey, what is the max frequence that the esp32 can generate in out pin ?

Yyoucef_ali Hey, what is the max frequence that the esp32 can generate in out pin ?

boualleg sabrina•3/27/24, 10:08 AM

It can generate a PWM signal with a frequency of up to 40 Mhz

HHarmonySoftware Hey everyone! I'm new here, and returning to the development field to learn more...

boualleg sabrina•3/27/24, 10:09 AM

can we discuss more about it if you want of course

boualleg sabrina•3/27/24, 10:09 AM

aymen ammari•3/27/24, 1:05 PM

Hi guys I hope you're having a good day, I want to ask you about the propellers in brushless motors, how does it effect the force, is there any suggestions for a flight that weights 400g, thank you in advance

AAccur4te no its not

techielew•3/27/24, 1:24 PM

Here's an Arduino client for MQTT: https://www.arduino.cc/reference/en/libraries/mqtt-client/ compatible with the SAMD architecture; look into it and determine your overall memory requirements. Do any of the MCUs on the platforms listed below meet your requirements?

Arduino MKR FOX 1200
Arduino MKR GSM 1400
Arduino MKR NB 1500
Arduino MKR VIDOR 4000
Arduino MKR WAN 1300 (LoRa connectivity)
Arduino MKR WAN 1310
Arduino MKR WiFi 1010
Arduino MKR ZERO (I2S bus & SD for sound, music & digital audio data)
Arduino MKR1000 WIFI
Arduino Nano 33 IoT
Arduino Zero

MQTT Client - Arduino Reference

The Arduino programming language Reference, organized into Functions, Variable and Constant, and Structure keywords.

techielew•3/27/24, 1:32 PM

@Middleware & OS devs ready for a C++ challenge? ✅-code-reviewCoding Challenges <C++>

electro_coco•3/27/24, 2:26 PM

any one has good resource for C++ for embedded
As i want to learn it I can learn C++ from youtube and all but using its tools for embedded that is where i lack imagination

Eelectro_coco any one has good resource for C++ for embedded As i want to learn it I can lear...

techielew•3/27/24, 3:01 PM

@Middleware & OS, any suggestions? How about you @Umesh Lokhande ?

Eelectro_coco any one has good resource for C++ for embedded As i want to learn it I can lear...

Flo•3/27/24, 3:03 PM

I can recommend https://www.learncpp.com/ as a general CPP learning resource, but it is not embedded specific.

Eelectro_coco any one has good resource for C++ for embedded As i want to learn it I can lear...

techielew•3/27/24, 3:03 PM

Also @streetdogg and @kmulier are great resources around programming topics

Eelectro_coco any one has good resource for C++ for embedded As i want to learn it I can lear...

boualleg sabrina•3/27/24, 3:05 PM

https://www.youtube.com/@EverythingEmbedded/videos

YouTube

Everything Embedded

My name is Kuldeep Mann, software developer specialising in designing and coding complex user interfaces for about 20 years on Windows platform using C++ and .NET. My Youtube channel is about touchscreen and embedded systems which presents a very interesting and fun combination. The Pi is so small, it can be virtually taken anywhere and I am ama...

boualleg sabrina•3/27/24, 3:08 PM

Eelectro_coco any one has good resource for C++ for embedded As i want to learn it I can lear...

boualleg sabrina•3/27/24, 3:08 PM

hope these channels will help you

Ttechielew @Middleware & OS, any suggestions? How about you @Umesh Lokhande ?

Umesh Lokhande•3/27/24, 3:33 PM

@electro_coco I'd suggest reading https://www.oreilly.com/library/view/embedded-programming-with/9781838821043/. Some additional resources and articles on Modern C++ in Embedded https://semblie.com/modern-cpp/ and https://www.embeddedrelated.com/blogs-1/nf/Amar_Mahmutbegovic.php

Marvee Amasi•3/27/24, 4:07 PM

Please I need help on this guys , I am exploring STM32 microcontroller development with RTOS (micrium). Any tips for calculating thread stack usage efficiently?

Bboualleg sabrina hope these channels will help you

electro_coco•3/27/24, 4:37 PM

thank you

UUmesh Lokhande @electro_coco I'd suggest reading https://www.oreilly.com/library/view/embedded-...

electro_coco•3/27/24, 4:44 PM

thank you

Ttechielew Here's an Arduino client for MQTT: https://www.arduino.cc/reference/en/libraries...

Accur4teOP•3/27/24, 5:35 PM

no this are also powerful

Accur4teOP•3/27/24, 5:38 PM

so as per the judge he suggested that instead of a heavy protocol like mqtt or gsm go with POE ( power over ethernet ) and instead of esp32 you can just use any 60 cent chip it will do the work as i just need to read 5 values from 5 different sensors and upload it to internet via POE , but he didn't mention any specific cheap so i want to know what chip was he talking about

AAccur4te so as per the judge he suggested that instead of a heavy protocol like mqtt or g...

Navadeep•3/27/24, 8:26 PM

PoE should work as well. It might be easy to integrate while installation and is a fully wired method unlike other popular wireless IoT.
The software-stack and processing you need in PoE case might get complex and not all MCUs come with ethernet peripheral. For example, say RA6M2. It comes with ethernet MAC (exposing RGMII lines) and an external PHY chip say DP83867 will be required to further down connect with the RJ-45 port having twisted pair lines.
Also, the POE requires it's set of chips - usually a rectifier IC and PoE PD IC for handshaking to extract power from the twisted pair lines (ex: https://ww1.microchip.com/downloads/en/Appnotes/AN3533-PD70210AAL_and_PD70211_System_Layout_Guidelines.pdf)

System may look like:

[Sensors] --> SPI/I2C--> [MCU]-->RGMII-->[PHY]-->[RJ-45] <---- [PoE Connector]
|
Power <--[PoE PD]<-- [Rectifier]<--

MMarvee Amasi Please I need help on this guys , I am exploring STM32 microcontroller developme...

Marvee Amasi•3/27/24, 9:54 PM

Please can anyone help me with this?

techielew•3/27/24, 10:47 PM

@IoT Cloud @Edge Networking devs won't want to miss @LMtx outlining the fundamentals of MQTT topic structures in tomorrow's Ask a Developer demo. Check it out tomorrow at 15:00 GMT time:

Server event: https://discord.gg/devheads?event=1222677100885184552
Server discussion thread: 📡-edge-networkingAsk a Developer: Understanding MQTT Topic Structures
YouTube link: https://youtu.be/_BI8vBpUGEI

YouTubeDevHeads

DevHeads Demo: Understanding MQTT Topic Structures

MQTT is one of the most popular IoT communications protocols for wireless sensor networks. Its publish-subscribe architecture can streamline, simplify, and scale the creation and provisioning of potentially massive edge networks—if you structure the pubsub technology appropriately from the start.

In his time at AWS IoT, consultant and DevHeads ...

Original message was deleted

techielew•3/28/24, 2:10 AM

Hey Guillotine, moving to #off-topic but thanks for the offer!

info3917APP•3/28/24, 2:14 AM

Hello everyone , I am doing a project on automatic trash detection and collecting , in that the whole project weights about 15kg to move that body to a torque value of 2.2.75n-m is required so provide me some dc motors also the drivers of the dc motors ... with less price

Umesh LokhandeAPP•3/28/24, 2:14 AM

History of MQTT- One of the most popular IoT Protocol

youcef_aliAPP•3/28/24, 2:14 AM

In Wire Shark how to capture all the traffic of a given address ? the traffic i'm lookinng for brtween two machine 192.168.1.2 and 192.168.1.3, my ip address is 192.16831.4

Yyoucef_ali In Wire Shark how to capture all the traffic of a given address ? the traffic i...

techielew•3/28/24, 4:40 AM

@Edge Networking

NNavadeep PoE should work as well. It might be easy to integrate while installation and is...

Accur4teOP•3/28/24, 5:15 AM

ohk ohk got it , thanks a lot

Iinfo3917 Hello everyone , I am doing a project on automatic trash detection and collecti...

Marvee Amasi•3/28/24, 5:28 AM

Good day @info3917 . Looking at your project requirements, you might want to look into DC motors with high "torque to weight" ratios. Some options to look at are brushed or brushless DC motors with gearboxes for higher torque. So, for motor drivers, you can consider H-bridge motor drivers or motor driver ICs like L298N or L293D, which are cost-effective. Make sure you check compatibility and power requirements before making your decision.

Donald Will•3/28/24, 5:58 AM

Anyone familiar with nordic microcontroller https://www.digikey.my/en/supplier-centers/nordic-semiconductor ?

Nordic Semiconductor Distributor | DigiKey Electronics...

DigiKey now has Nordic Semiconductor Parts! Nordic Semiconductor is at the forefront of this wireless revolution.

Saßì•3/28/24, 5:58 AM

@kumarsingh Welcome! Can you let us know a bit about your technical background, what brings you to DevHeads, and what you're looking to learn/contribute?!

MMarvee Amasi Check out this pdf , you will get to learn much about this @https://www.google.c...

Donald Will•3/28/24, 5:59 AM

thank you is a good resources

DDonald Will thank you is a good resources

Marvee Amasi•3/28/24, 6:00 AM

You are welcome

SSaßì @kumarsingh Welcome! Can you let us know a bit about your technical background, ...

kumarsingh•3/28/24, 6:18 AM

Yes, Thanks for adding me in this group!!

How are you all my dear friends?

Me and my team developed 4+ IIoT & IoT project for industrial automation and Home automation.

In that application I get lost of experience which I share here with all of you

Learn flavour management
API integration and device communication
Use AWS services like IoT core, Dynamo db
Smart devices add and operate
Live devices updating via mqtt
Automation of devices
Operate devices without internet via app
Automation based on location
Camera streaming and management
Devices sharing with family
Alexa integration
More than 200 devices integration
And many more things

Kkumarsingh Yes, Thanks for adding me in this group!! How are you all my dear friends? Me ...

techielew•3/28/24, 6:21 AM

Wow that's awesome Kumar. You here to help or learn or both?

kumarsingh•3/28/24, 6:24 AM

Both my dear friend

Kkumarsingh Both my dear friend

techielew•3/28/24, 6:52 AM

We're happy to have you! You should check out our Office Hours and Engineering Hour sessions on Friday and Sunday, respectively. We also have some cool demos coming out. And if you're interested in anything you don't see or have suggestions on how we can improve, we're all ears. Just let us know!

wafa_ath•3/28/24, 8:09 AM

Good morning,I have a project in which I am using Android application for object detection
Currently my phone camera opens when I open the application and it starts detecting the objects
But I want to integrate the esp32 cam with android so that esp32 video stream come to android and should be shown at phone's screen
Basically it uses phone camera for object detection now it should use esp32 cam
Can anyone help?

Wwafa_ath Good morning,I have a project in which I am using Android application for object...

Umesh Lokhande•3/28/24, 9:45 AM

You can run a Webserver on a ESP32 CAM Module. And access it from Android App which can be made by using simple MIT App Inventor. So that the Mobile App will access a video stream over HTTP as a client. Also, you can add additional capabilities like the object detection algorithm running on ESP32 to acces camera stream connected to it.

Wwafa_ath Good morning,I have a project in which I am using Android application for object...

aymen ammari•3/28/24, 9:53 AM

Wich app you are using, it mabe has a sitting to change cam source and his choosing phone cam us default

Saßì•3/28/24, 12:58 PM

@kumarsingh Welcome! Can you let us know a bit about your technical background, what brings you to DevHeads, and what you're looking to learn/contribute?!

Saßì•3/28/24, 12:58 PM

@gggrunt Welcome! Can you let us know a bit about your technical background, what brings you to DevHeads, and what you're looking to learn/contribute?!

gggrunt•3/28/24, 1:03 PM

I got invite from Shakila and just checking what it is about

Wwafa_ath Good morning,I have a project in which I am using Android application for object...

Ben•3/28/24, 1:41 PM

I haven't worked with Android applications before, but I tried connecting the ESP32-CAM. I used the example called 'CameraWebServer,' which gave me an address. I put this address into my Python script, and it worked. I'm not sure if I answered your question correctly.

Ben•3/28/24, 1:48 PM

@wafa_athmani Have you tried calibrating the ESP32-CAM? I ask because I need its parameters for my project. I've already tried, but the results aren't accurate.

UUmesh Lokhande You can run a Webserver on a ESP32 CAM Module. And access it from Android App wh...

wafa_ath•3/28/24, 2:00 PM

Actually i tried your solution by using flask library and then used kodular WebViewer، i completely changed the app but works very nicely and smoothly thank you for the idea

UUmesh Lokhande You can run a Webserver on a ESP32 CAM Module. And access it from Android App wh...

Ben•3/28/24, 2:06 PM

The ESP32-CAM can only capture frames, it does not support functionalities such as opencv

no its not

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