A 4-20mA loop for sensors? This is a classical industry method for all types of monitoring. They hav

A 4-20mA loop for sensors? This is a classical industry method for all types of monitoring. They have some theory - no loss in the signal across any distance.

Aaymen ammari Hi!! Does anyone know a better ultrasonic sensor other than the HC-SR05 or its s...

NavadeepOP•2/22/24, 7:18 AM

I am surprised to not find many. Potential to start a business manufacturing better ones.
check this alternative - https://maxbotix.com/products/mb1230

MaxBotix

MB1230 XL-MaxSonar-EZ3

Ranges from 20cm to 765cm with a 10Hz read rate. Narrow detection field. High noise tolerance.

Aaymen ammari I'm working on MAX30102, does anyone have some advices to improve the accuracy ...

NavadeepOP•2/22/24, 7:23 AM

Have a look at these. They actually recommend a sequence and guideline to get accurate data:
https://www.analog.com/en/resources/technical-articles/guidelines-for-spo2-measurement--maxim-integrated.html
https://www.analog.com/en/resources/technical-articles/penetration-depth-guide-for-biosensor-applications.html

CCamila_99$$Hii everyone I hope you had a wonderful day!!! I'm exploring capacitive touch se...

NavadeepOP•2/22/24, 7:28 AM

I have worked on Infineon series of parts and seen their Capsense which is ultimate. Note that it is MCU integrated in their PSoC series of chips and provides and GUI to configure sensitivity, pattern etc. If you're looking for external IC, check https://www.ti.com/product/FDC2214
opens up quite interesting applications.

an beautiful reference design https://www.ti.com/tool/FDC2214PROXSEN-EVM (this actually matters alot - getting the design right just like PCB antennas)

FDC2214 data sheet, product information and support | TI.com

TI’s FDC2214 is a 4-Ch, 28-bit, capacitance to digital converter. Find parameters, ordering and quality information

FDC2214PROXSEN-EVM Evaluation board | TI.com

View the TI FDC2214PROXSEN-EVM Evaluation board description, features, development resources and supporting documentation and start designing.

techielew•2/22/24, 9:02 AM

Just a couple days left in our poll folks: https://discord.com/channels/1130679493799977062/1199293807737450538/1208322777757519952

What MCU architecture did you cut your teeth on?

NavadeepOP•2/22/24, 9:27 AM

Wow - STM32 totally champed! Curious about who those PIC guys are....
I'd like to read a case/business study about the rise of STMicroelectronics, their strategy and ideas. Anyone know it already? Please share - let's chat around.

NNavadeep Wow - STM32 totally champed! Curious about who those PIC guys are.... I'd like t...

techielew•2/22/24, 9:54 AM

I'm curious too. It seems ST carved out a lead in the mass market niches for commercial Arm tech.

NNavadeep Wow - STM32 totally champed! Curious about who those PIC guys are.... I'd like t...

techielew•2/22/24, 9:57 AM

In a separate but related note, I've just published the meeting thread for this week's Office Hours, which will focus on migrating from maker to professional development platforms and practices, notably for those who started on Arduino: https://discord.com/channels/1130679493799977062/1210162122332442645

Once Arduino started introducing Arm-based devices, ST may have been the closest commercial-grade solution.

NNavadeep Wow - STM32 totally champed! Curious about who those PIC guys are.... I'd like t...

onky•2/22/24, 10:28 AM

I am curious about this too. They have just blown away all the competition. Now with C0 series they are targeting 8 & 16 bit MCU users. Crazy.

NNavadeep are you on MSP430FR seires? I agree with the tediousness coming to MSP librarie...

onky•2/22/24, 10:30 AM

Yes FR series. Never used Nordic or Silicon labs MCUs. Heard that Nordic has no good documentation.

NNavadeep are you on MSP430FR seires? I agree with the tediousness coming to MSP librarie...

onky•2/22/24, 10:31 AM

LaMeres, even I followed his videos on YouTube. These videos are just gold for MSP controllers

NNavadeep A 4-20mA loop for sensors? This is a classical industry method for all types of ...

onky•2/22/24, 10:33 AM

Yes, measurement signals in terms of current. Good for log distances and no suceptible for external noise like voltage signals.

Oonky I am curious about this too. They have just blown away all the competition. Now ...

techielew•2/22/24, 10:43 AM

You'd think that 8- and 16-bit platforms would be obsolete by now. Never ceases to amaze me how much runway they have despite all of these super cheap 32-bit options coming to market

Albaphet soup•2/22/24, 11:06 AM

Is /var/cache/apt/archives important? And what will happen if i delete it

Albaphet soup•2/22/24, 11:06 AM

I cant find anything on googles

Albaphet soup•2/22/24, 11:07 AM

Oh it keeps deb files for easy repairs

Albaphet soup•2/22/24, 11:08 AM

Absolutely useless cause it takes just as long redownloading the same thing you never got to use

Ttechielew You'd think that 8- and 16-bit platforms would be obsolete by now. Never ceases ...

onky•2/22/24, 12:07 PM

Exact same though I had 3 years back, but I have seen some niche industries in India they still use 8 bit MCUs. Some people still wants to continue with even 8051 (family).

PPetr Dvořák Thank you for your activity, @kmulier. When adding a new symbol, I prefer keepin...

kristof-at-embeetle•2/22/24, 12:39 PM

Hi @Petr Dvořák ,
I didn't know about the '?''?' wildcard option for designators in KiCAD. Thank you for pointing that out!
This will already help me for 90% of the cases I struggle with. In my next design, I will for sure use this wildcard to avoid non-matching designator numbers.

However, the other 10% of cases is when a design is "ready" but I forgot to add a component here or there. Last minute changes - you know... I think I can still use my script in those particular circumstances. So the effort is not in vain

Thanks again for pointing out the wildcard option. I learned again something new today.

Kkristof-at-embeetle Hi @Petr Dvořák , I didn't know about the `'?'` wildcard option for designators ...

Petr Dvořák•2/22/24, 1:44 PM

Check all options of the Annotate schematic tool. It pays off and can save a lot of time.

Saßì•2/22/24, 4:20 PM

@Donut -lover

Welcome,! We're happy to have you as a DevHead. Feel free to let us know what you're working on now and a bit about your technical background.

Saßì•2/22/24, 5:26 PM

Friendly Reminder about Upcoming Event
https://discord.com/invite/3KSHgMS6?event=1209191378861555833

Ttechielew Platform IO is going to give you breadth of hardware support if you plan on movi...

yepeto99•2/22/24, 10:52 PM

Perfect thank you for the info I will get in touch with them

yepeto99•2/22/24, 10:54 PM

@Umesh Lokhande @Aditya thakekar @Joseph Ogbonna Wich IDE do you recommend for the multiple esp32 boards? I'm looking for something versatile but capable and preferably without loosing esp functionalities

SSaßì ** Friendly Reminder about Upcoming Event** https://discord.com/invite/3KSHgMS6...

techielew•2/22/24, 10:58 PM

Hey @MCU, MPU & Kits fans. Just a reminder on tomorrow's Office Hours meetup, which will feature a discussion on transitioning from Maker platforms like Arduino to professional development tools/solutions.

I actually think we'll hear about a lot of developers who migrated in the other direction. In fact at CES I met with my friend Marcellino Gemelli of Bosch Sensortec who said they've gone all in on the Arduino Pro line.

Sign up and join the event here: https://discord.com/channels/1130679493799977062/1130679494248763435/1210276561291444244
Participate in the session discussion board here: https://discord.com/channels/1130679493799977062/1210162122332442645

Saßì•2/23/24, 2:36 AM

@Dixon

Welcome,! We're happy to have you as a DevHead. Feel free to let us know what you're working on now and a bit about your technical background.

AAccur4te @Umesh Lokhande i say your video about connecting aws to raspberry pi but i am ...

Umesh Lokhande•2/23/24, 4:16 AM

Hi @accur4te at that time I used python2.7 which used to come by default in older raspbian os. Now in 2024, if you're trying run Python code it will throw an error. As per new changes Raspberry Pi OS uses python3 by default. Apart from this don't forget to install paho-mqttpaho-mqtt library. Share more details about what kind of error show-up on RPi terminal

UUmesh Lokhande Hi @accur4te at that time I used *python2.7* which used to come by default in ol...

Accur4te•2/23/24, 4:19 AM

ohk i will give it a try and let you know

AAccur4te ohk i will give it a try and let you know

Umesh Lokhande•2/23/24, 4:19 AM

Sure

Yyepeto99 @Umesh Lokhande @Aditya thakekar @Joseph Ogbonna Wich IDE do you recommend for ...

Joseph Ogbonna•2/23/24, 5:59 AM

PlatformIO is good, u can also use esp IDF

momo301199•2/23/24, 6:15 AM

Saßì•2/23/24, 6:25 AM

@momo301199 Welcome,! We're happy to have you as a DevHead. Feel free to let us know what you're working on now and a bit about your technical background.

JJoseph Ogbonna PlatformIO is good, u can also use esp IDF

techielew•2/23/24, 8:28 AM

Have you used both Joseph?

Ttechielew Have you used both Joseph?

Joseph Ogbonna•2/23/24, 10:17 AM

I have use PlatformIO but is quite long though. Haven't used IDF

SageBoy•2/23/24, 10:27 AM

Hello

JJoseph Ogbonna I have use PlatformIO but is quite long though. Haven't used IDF

techielew•2/23/24, 10:28 AM

Looks like time for a new poll, and just as our MCU one is coming to an end.

What IDEs should I include as options in the upcoming poll besides Embeetle, PlatformIO, STM32Cube, ESP-IDF, Arduino, VS Code?

SageBoy•2/23/24, 10:31 AM

Hello, I want start my journey in electronics but I only have little knowledge in it, like solving k-maps, I want to learn more.. but I don't know how to started it nicely. Can anyone provide me guidance!?
thankyou

Saßì•2/23/24, 10:34 AM

@SageBoy Welcome,! We're happy to have you as a DevHead. Feel free to let us know what you're working on now and a bit about your technical background.

SageBoy•2/23/24, 10:35 AM

Hello

SageBoy•2/23/24, 10:36 AM

Ttechielew Looks like time for a new poll, and just as our MCU one is coming to an end. Wh...

Joseph Ogbonna•2/23/24, 11:58 AM

We have thonny IDE for micropython, you can include it

SSageBoy Hello, I want start my journey in electronics but I only have little knowledge i...

Joseph Ogbonna•2/23/24, 12:00 PM

I can provide you with a valuable course that will kickstart your journey. You'd learn a lot from it

JJoseph Ogbonna I can provide you with a valuable course that will kickstart your journey. You'd...

SageBoy•2/23/24, 12:00 PM

Really?

SageBoy•2/23/24, 12:00 PM

I am very much interested

SSageBoy I am very much interested

Joseph Ogbonna•2/23/24, 12:01 PM

JJoseph Ogbonna Ok

SageBoy•2/23/24, 12:02 PM

Can I dm you?

SSageBoy Can I dm you?

Joseph Ogbonna•2/23/24, 12:03 PM

Yes you can

Camila_99$$•2/23/24, 12:43 PM

Hi! I'm considering the use of e-paper displays in my IoT project for low-power applications. What are the notable e-paper display modules available, and are there any specific microcontrollers compatible with these displays that you would recommend?

CCamila_99$$Hi! I'm considering the use of e-paper displays in my IoT project for low-power ...

NavadeepOP•2/23/24, 1:07 PM

This man is a champ! Have a look at https://hackaday.io/project/11537-nekocal-an-e-ink-calendar
Used here is ED060SC4 800x600 Eink display. Some of the other projects:
https://www.zephray.me/projects/

NekoCal - an E-Ink Calendar

A simple calendar made with e-ink display and stm32 microcontroller. Can display date&time and a background image. Images are stored in the SD card. The ultra-low power consumption and always on display make it perfect for basic information display purpose. Next step would be trying to use an ESP-32 to replace the STM32F4 make it possible to gra...

kristof-at-embeetle•2/23/24, 2:56 PM

Hi guys,
I won't be able to attend the meeting this time. Apologies.

Saßì•2/23/24, 2:57 PM

Get Ready Guys
https://discord.com/invite/8NGrbubK?event=1209191378861555833

A 4-20mA loop for sensors? This is a classical industry method for all types of monitoring. They hav

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