Hey @Petr Dvořák the other day in the https://discord.com/channels/1130679493799977062/1193798007662

Hey @Petr Dvořák the other day in the Low-cost but still excellent oscilloscopes for SOHO thread you got on the topic of Smith charts.

Do you still use them in your hardware development efforts? Can you explain how you'd use a Smith chart to determine something like load input impedance?

Curious if @pallavaggarwal @Joseph Ogbonna @Aditya thakekar or others use these methods as well and when/where they apply them.

Ttechielew Hey @Petr Dvořák the other day in the https://discord.com/channels/1130679493799...

Joseph Ogbonna•1/17/24, 1:50 PM

my last design i did using Nordic nRF52840 which had a BLE on it. Wanted to use the smith chart, but found it a little bit difficult, but was recommended to use VNA device instead for my antenna tuning it get my desired value. So i dont actually use them in my design, but its helpful to a certain point.

Petr Dvořák•1/17/24, 2:20 PM

@techielew Well, the Smith chart is not a calculator. It is a special format of logmag chart in a round form. The Smith chart gives you information how the impedance varies with frequency. For the given frequency, the Smith chart can help you with finding a corrective matching network for your antenna feed point or transmitter output. The Smith chart can help us designing a matching network. It can help to design a matching network for all load impedance values because the Smith chart is designed for a normalized values. Our equipment use 50 Ohm or 75 Ohm. The Smith chart can be used to display the impedance characteristics measured by the given instrument and the given component, transmission line, impedance etc.

Aditya thakekar•1/17/24, 3:23 PM

Just for impedance characteristics it is used. Like data visualization techniques.

JJoseph Ogbonna my last design i did using Nordic nRF52840 which had a BLE on it. Wanted to use ...

Aditya thakekar•1/17/24, 3:30 PM

Yes VNA is tooo good of a tool. These are pretty costly but real research oriented teams invest...

Apart from that I don't feel we need smith chart in designing.

Aditya thakekar•1/17/24, 3:37 PM

Basically, Smith chart is built by considering impedance, it can be used to analyze resistance and reactance parameters in both the series and parallel.

Seal on Ice•1/17/24, 3:44 PM

update chrome

Seal on Ice•1/17/24, 3:46 PM

LLMtx Jim Cantrell, CEO at Phantom Space, agreed to be a guest on my podcast. We will ...

Aditya thakekar•1/17/24, 4:59 PM

Yes.

Future of IoT.
Are there any current applications merged with IoT being used in space industry?
What are the security standards used in space tech, especially with growing number of drones in military applications? Where camera is used to scan areas running in low altitudes.

UUmesh Lokhande Even I'm curious from the time, I got to know from conversations in the team. I ...

Aditya thakekar•1/17/24, 5:00 PM

Interesting to learn how they merge both applications in sjngle fpga project.

SSeal on Ice Click to see attachment

techielewOP•1/17/24, 6:55 PM

Thanks Seal

Seal on Ice•1/17/24, 7:08 PM

https://tenor.com/view/seal-wadfilm-wad-waddengebied-waddenzee-gif-15737864

Tenor

honest_starfish_36393•1/17/24, 7:49 PM

https://youtu.be/ydHc6oQaiJM?si=PP0SJrhwxKIx0mX4

YouTubeDIY with Hardik

STM32 : Hello World ❌ | STM32 : Jai Shree Ram ✅ | printf( ) functi...

In this video, discover how the STM32 operates internally while executing a printf statement. The internal workings are broken down step by step for a clear understanding.

Flow chart: https://whimsical.com/stm32-hello-world-Mj6bYD28WfMK7zB4pVSFtp@3CRerdhrAw8omDZrk4uiGdap
Github link: https://github.com/hardik1975/STM32/blob/main/itmSendData.c
...

NNavadeep @Phoenix do we have a way to move these conversations to a thread now?

techielewOP•1/17/24, 8:20 PM

Yo this conversation was migrated to 🪲-firmware-and-baremetalTroubleshooting the NodeMCU RFID Interface

techielewOP•1/17/24, 8:28 PM

Welcome y'all newcomers from 1/17/24! We're so happy to have you here as DevHeads!

Can you all let us know a little bit more about your technical background, what brings you to the DH Server, and any projects you're currently working on? This will help us help you and help you help others!

We've also created an instructional post that will help you get started here (haven't had time to update the server guide yet

): https://discord.com/channels/1130679493799977062/1130679493799977066/1196966569327214632

Happy Collab'ing! Let me or any of the Leads @Mods or @Admins know if you have questions

@Bless77 @Eragbi @krishna @Riishi @rmax79 @GrimReaper0304 @Prachi Patil @sushi @Dharanipathi @gopalharish @Divy Modi @sr2519 @Varun Muley @SureshRoshi @Roshan_RK

DevHeads•1/17/24, 10:59 PM

Congrats @Abhishek Hipparagi ! You've been Verified!

PPadmalaya Rawal I need help with ESP32 modules Bare Schematic. I have the following 3 modules. ...

techielewOP•1/17/24, 11:01 PM

@Joseph Ogbonna @Umesh Lokhande

Hhonest_starfish_36393 https://youtu.be/ydHc6oQaiJM?si=PP0SJrhwxKIx0mX4

techielewOP•1/17/24, 11:11 PM

can't branch your code in github bro!

DDevHeads Congrats @Abhishek Hipparagi ! You've been Verified!

techielewOP•1/17/24, 11:12 PM

Welcome @Abhishek Hipparagi! Can you tell us a little about yourself and your technical background? What brings you to DevHeads? What are you working on currently?

PPadmalaya Rawal I need help with ESP32 modules Bare Schematic. I have the following 3 modules. ...

Joseph Ogbonna•1/17/24, 11:24 PM

What do you want to do and how can we help in the schematics

Ttechielew Welcome @Abhishek Hipparagi! Can you tell us a little about yourself and your te...

Abhishek Hipparagi•1/17/24, 11:28 PM

Hello, I'm Abhishek, an undergraduate student actively seeking job opportunities while immersing myself in the world of embedded systems. I have two years of experience as an intern, working with AVR/Arduino, STM32, and ESP series microcontrollers, as well as PCB designing using KiCAD. Additionally, I've gained experience with Pixhawk and DJI-based drones. Currently, I'm focused on expanding my knowledge and skills in this exciting field. Excited to connect and learn within the DevHeads community!

AAbhishek Hipparagi Hello, I'm Abhishek, an undergraduate student actively seeking job opportunities...

techielewOP•1/17/24, 11:44 PM

Thanks dude! Happy to have you here! The best resources for you are likely the @HW-Lead and @Computing Lead roles.

Do you have any images/examples of your drone work you can share with us here or in the #projects-and-self-promotion channel? We'd love to have a look.

brotherjoons•1/18/24, 12:01 AM

Hi,

I am looking into whether I can encrypt a python script so the code is obfuscated. it should decrypt it when the script runs.
I have seen few packages to do this, like:
https://github.com/Falldog/pyconcrete
https://juanlao7.github.io/codeclose/documentation
https://changsin.medium.com/how-to-protect-python-source-code-5892a153d0ac
https://pypi.org/project/sourcedefender/

I was wondering what your thoughts are on this and suggestion for a approach you would take?

GitHub

GitHub - Falldog/pyconcrete: Protect your python script, encrypt it...

Protect your python script, encrypt it as .pye and decrypt when import it - GitHub - Falldog/pyconcrete: Protect your python script, encrypt it as .pye and decrypt when import it

Codeclose

Protect and license your Python source code

Medium

How to protect python source code

Python is one of the most popular languages for machine learning and web development. While its popularity comes from easy syntax and a…

PyPI

sourcedefender

Advanced encryption protecting your python codebase.

DevHeads•1/18/24, 12:51 AM

Congrats @Harshal

! You've been Verified!

techielewOP•1/18/24, 1:03 AM

Hey @Harshal

! Welcome! What do you do and what brings you to DevHeads? What are you working on currently?

Also, if you haven't seen it already, there are some tips here: https://discord.com/channels/1130679493799977062/1130679493799977066/1196966569327214632.

Discord

Discord - A New Way to Chat with Friends & Communities

Discord is the easiest way to communicate over voice, video, and text. Chat, hang out, and stay close with your friends and communities.

Ttechielew haha, okay. so what are the components of the system?

Awais•1/18/24, 3:04 AM

SAMD21 controller and GPS module

AArcaneMike Yo I need this. I have cats that need to stop walking into my room. Don't need t...

Awais•1/18/24, 3:05 AM

It’s under progress, once it gets finally done I’ll let you know about the owner of this product and you can then buy from them

ArcaneMike•1/18/24, 3:08 AM

Rad

AAwais It’s under progress, once it gets finally done I’ll let you know about the owner...

techielewOP•1/18/24, 3:11 AM

oh i thought you were doing it on your own

Awais•1/18/24, 3:11 AM

No No

Ttechielew Thanks dude! Happy to have you here! The best resources for you are likely the @...

Abhishek Hipparagi•1/18/24, 3:29 AM

Okay
Thanks for sharing

DevHeads•1/18/24, 4:42 AM

Congrats @Cosmos ! You've been Verified!

Bbrotherjoons Hi, I am looking into whether I can encrypt a python script so the code is obfu...

techielewOP•1/18/24, 4:45 AM

By “when the code runs” do you mean encrypt the binary?

DevHeads•1/18/24, 4:47 AM

Congrats @Sachin K ! You've been Verified!

Saßì•1/18/24, 4:48 AM

@Sachin K Welcome , Can you tell us a little about yourself and your technical background? What brings you to DevHeads? What are you working on currently?

Saßì•1/18/24, 4:50 AM

@Cosmos Welcome! We're eager to know more about you. What's your professional background or current focus?

Umesh Lokhande•1/18/24, 5:47 AM

Why 10-bit I2C Slave Addressing is not widely used in device libraries and example codes? Even, I often use a 7-bit slave address. It seems to me that either 10-bit addressing is only for special cases or it's a bit of a challenge to implement in code. Appreciate any perspective, experience @abhishek awasthi @Navadeep @ShreeshaN @Aditya thakekar

Ttechielew By “when the code runs” do you mean encrypt the binary?

brotherjoons•1/18/24, 6:11 AM

Hi @techielew , encrypt the .py source code or .pyc compiled code and decrypt them on the fly so the Python interpreter could run it.
I was curious about the best practices in doing so. Thanks

DevHeads•1/18/24, 6:11 AM

Congrats @sumit_adeep_002 ! You've been Verified!

UUmesh Lokhande Why _10-bit I2C Slave Addressing_ is not widely used in device libraries and exa...

ShreeshaN•1/18/24, 6:14 AM

My guess is that use of 8-bit or 10-bit slave address will add a byte more in every communication packet of data and considering slow speed of I2C, devices using 8-bit or 10-bit are not popular and adding extra implementation of addressing will increase I2C device library for small microcontrollers.

DevHeads•1/18/24, 6:16 AM

Congrats @Hermes ! You've been Verified!

Saßì•1/18/24, 6:19 AM

@Hermes Welcome! We're eager to know more about you. What's your professional background or current focus?

Hermes•1/18/24, 6:22 AM

I'm a cybersecurity student at National University, and previously was an intern at tinyvision.ai inc. (the company that made the Upduino v3 ice40 FPGA dev board)

SShreeshaN My guess is that use of 8-bit or 10-bit slave address will add a byte more in ev...

Umesh Lokhande•1/18/24, 6:31 AM

I agree though. Not sure who will love this 10-bit addressing and implementation. I wonder even for MPU users are there enough bus drivers support for 10-bit I2C addresses in user space packages

Bbrotherjoons Hi @techielew , encrypt the .py source code or .pyc compiled code and decrypt th...

techielewOP•1/18/24, 6:42 AM

Is this for a commercial project? How imperative is it that either the source or the binary are encrypted? What are you concerned about protecting against? IP theft/cloning? Vulnerabilities? Something else?

There are commercial products like IAR Embedded Trust that provide application encryption and other security measures. And other services that encrypt binaries. Of course, those aren't FOSS..

Ttechielew Is this for a commercial project? How imperative is it that either the source or...

techielewOP•1/18/24, 6:42 AM

https://www.iar.com/embeddedtrust

IAR Embedded Trust

Simplify embedded security with the Root of Trust;

Secure code, applications and devices

UUmesh Lokhande Why _10-bit I2C Slave Addressing_ is not widely used in device libraries and exa...

Aditya thakekar•1/18/24, 6:56 AM

Most mcu work on the assumption that slave disables itself on not receiving matching address. 10 bit is used in STM32 series but not all support. NACK is disabled function.

Ttechielew @Joseph Ogbonna @Umesh Lokhande

Padmalaya Rawal•1/18/24, 7:11 AM

Thank you @Joseph Ogbonna @techielew
@ShreeshaN helped me out

SShreeshaN My guess is that use of 8-bit or 10-bit slave address will add a byte more in ev...

Navadeep•1/18/24, 7:26 AM

Makes sense. As well, 10-bit one can address upto (2^10)-1 devices. But come on, I haven't seen anyone using even 127 device itself on a single bus.

Navadeep•1/18/24, 7:28 AM

Curious: What was your highest? I've used 8 of them multiplexed with the same address and 8 such ones in a single bus. In SPI though I've seen designs having 64 subordinate nodes.

Aditya thakekar•1/18/24, 7:30 AM

Yes that's another... Haven't seen that high of a bus load either