DevHeads IoT Integration Server•14mo ago

hi, im new here hoping to learn lots of IoT here

TTyphlosion31 hi

Marvin•11/11/24, 12:31 PM

Hey @Typhlosion31 welcome. What do you do and what are you currently working on?

AArreojn hi, im new here hoping to learn lots of IoT here

Marvin•11/11/24, 12:33 PM

Hey @Arreojn
Welcome. Lots of resource here to get you up ans running.
Please checkout the devheads Youtube.
https://www.youtube.com/@DevHeads

YouTube

DevHeads

Welcome to the official DevHeads YouTube Channel!

We're a community of professional developers and engineers dedicated to advancing technology, with a focus on IoT solutions. Our mission is to provide personalized software and hardware solutions that help businesses thrive.

What to Expect:

Knowledge Sharing: Guides on embedded systems, Io...

MMarvin Hey @Typhlosion31 welcome. What do you do and what are you currently working on?

Typhlosion31•11/11/24, 1:18 PM

Hello there
I am an embedded developer, I work on TI, STM, ESP microcontrollers

Typhlosion31•11/11/24, 1:19 PM

Well, right now I am working on this industrial generator which as TI microcontroller. Its pretty advance project

Typhlosion31•11/11/24, 1:19 PM

CAN J1939 protocols and other stuff

Typhlosion31•11/11/24, 1:21 PM

This is my office profile and personally I make electronics projects such as ESP marauder, cyberdecks using raspberry pi, location trackers, etc...

Typhlosion31•11/11/24, 1:21 PM

:cat_hi_animated:

Marvin•11/11/24, 1:38 PM

That sounds very great.
I have heard ESP marauder, just got a M5stickc plus been playing around with it.

Ssegfaultdev.elf or anyone can suggest me good Multimeter in $100 range

JeremyCook•11/11/24, 2:25 PM

Hello, yes I do have some thoughts, as @techielew notes. I did a review of the OWON HDS2102S meter/scope/signal generator some time ago: https://embeddedcomputing.com/technology/debug-and-test/oscilloscopes-analyzers-generators/owon-hds2102s-250-handheld-scope-review

which is in the $250 range. I still use it quite a bit, and like it, though on the negative side there is a delay with some measurements, and I really don't use the signal generator function. Also the battery life isn't great.

hat being said, you can find what looks like the same style of meter/scope on Amazon: https://amzn.to/3AoxfIM (affiliate) for just over $100, with what looks like (at a quick glance) reduced specs compared to what I have. I also have a Fluke 179 that has worked for roughly 2 decades, has excellent battery life, and takes measurements quickly. Looks like they are more expensive, but I guess you get what you pay for.

Embedded Computing Design

OWON HDS2102S: ~$250 Handheld Scope Review - Embedded Computing Design

Depending on your level of electronics knowledge, work, and/or experimentation, a voltmeter may be sufficient for your diagnostic needs. However, being able to see the way an electronic signal changes over time, or perhaps even multiple signals, takes your analysis capabilities to a whole new level.

OWON HDS242 Handheld Digital Oscilloscope Multimeter 2CH USB TypeC ...

OWON HDS242 Handheld Digital Oscilloscope Multimeter 2CH USB TypeC 40MHz 3.5 LCD Test Meter

fei•11/11/24, 3:09 PM

Hi, I am a full stack developer, I work with frontend, backend, mobile, databases to cloud servers.
I'm currently working on a project where I require a big enough RFID reader to detect RFID cutlery embedded plates. Not sure what type of RFID reader I would need. Am here to learn about RFID in general and also find the information I need.

Ffei Hi, I am a full stack developer, I work with frontend, backend, mobile, database...

ZacckOsiemo•11/11/24, 3:32 PM

you likely need UHF RFID you can use that to do inventory as you describe

Ffei Hi, I am a full stack developer, I work with frontend, backend, mobile, database...

ZacckOsiemo•11/11/24, 3:33 PM

you would need an antennna a reader and some tags to be read and written to, the standard is defined so you can buy off the shelf hardware and software or do it yourself.

techielew•11/11/24, 10:09 PM

@Event Pings,
This week's Office Hours meetup topic is: https://discord.gg/cHNGvqMJG9?event=1305642842210959411

Ttechielew @Event Pings, This week's Office Hours meetup topic is: https://discord.gg/cHNGv...

techielew•11/11/24, 10:11 PM

Would be great to get some use cases and challenges you've all experienced queued up so we can address them in the open discussion portion of Friday's meetup.

ZZacckOsiemo you would need an antennna a reader and some tags to be read and written to, the...

fei•11/12/24, 1:52 AM

If I require something that detects in a certain area, for example a food tray. Would that work?

Ffei If I require something that detects in a certain area, for example a food tray. ...

ZacckOsiemo•11/12/24, 3:20 AM

oh yes it would it can work in the order of meters.

Ttechielew @Event Pings, This week's Office Hours meetup topic is: https://discord.gg/cHNGv...

ZacckOsiemo•11/12/24, 3:21 AM

anyone tried using write protection features on STM32?

ZZacckOsiemo oh yes it would it can work in the order of meters.

fei•11/12/24, 3:39 AM

Oh great, thanks Zacc. Will try this first

fei•11/12/24, 3:42 AM

Hopefully will see if it can focus on the red area from underneath the table

Ffei Hopefully will see if it can focus on the red area from underneath the table

ZacckOsiemo•11/12/24, 3:47 AM

the red area is small UHF can cover a small room so it will cover that

Ffei Oh great, thanks Zacc. Will try this first

ZacckOsiemo•11/12/24, 3:48 AM

start with a white paper like this https://rainrfid.org/what-is-rain-rfid/ then start breaking out system components and such.

RAIN RFIDsofya howard

What is RAIN RFID Technology

RAIN RFID is a wireless technology connecting billions of items to the internet, enabling businesses & consumers to identify, locate, authenticate, and engage each item.

fei•11/12/24, 4:50 AM

:salute: will use this, thanks Zacc

Ffei :salute: will use this, thanks Zacc

ZacckOsiemo•11/12/24, 5:04 AM

let us know if you get stuck, and once antennas give you issues, we have some people obsessed with beams

fei•11/12/24, 5:05 AM

have to first pre order the equipments from china after doing some research on the available communicaiton protocol and frequency they offer

Ffei have to first pre order the equipments from china after doing some research on t...

ZacckOsiemo•11/12/24, 5:08 AM

good idea what are you ordering readers and antennas?

ZacckOsiemo•11/12/24, 5:09 AM

that's a good strategy, my first foray into this, being a software developer was to make it myself, boy did I mess up

ZZacckOsiemo good idea what are you ordering readers and antennas?

fei•11/12/24, 6:09 AM

For now only the reader but from what u are implying seems like because i need to use the antennas to direct and shape the signal to the designated area from under the table

fei•11/12/24, 6:09 AM

ill need to check with the supplier

fei•11/12/24, 6:10 AM

yea, i also started from E&E but I started work as a fullstack engineer

, and now after having more experience in software development, trying to go back to my roots since with the advent of AI it seems like its kinda the way

Ffei For now only the reader but from what u are implying seems like because i need t...

ZacckOsiemo•11/12/24, 6:11 AM

yes and take care to ensure your reader and antenna have compatible connection points. You may also be operating at such a small range that an internal antenna may work ask about that as well.

Ffei yea, i also started from E&E but I started work as a fullstack engineer 😂 , and...

ZacckOsiemo•11/12/24, 6:12 AM

I'll be honest I'm a software person through and through the closest I got t electronics was uni physics modules

ZZacckOsiemo yes and take care to ensure your reader and antenna have compatible connection p...

fei•11/12/24, 6:13 AM

ahh thats insightful, will keep that in mind while reading more

Ffei ahh thats insightful, will keep that in mind while reading more

ZacckOsiemo•11/12/24, 6:13 AM

yeah all these are the things that messed me up

fei•11/12/24, 6:14 AM

was afraid of these mishaps, these tips could hopefully save me the trip down that rabbit hole

fei•11/12/24, 6:15 AM

haha

Ttechielew @Ready to Work, there's an organization looking for assembly developers. Like, r...

techielew•11/12/24, 7:52 AM

@666Yami_kaze999 @RakeshWasnik @wafa_ath @Marvee Amasi @Renuel Roberts @boualleg sabrina -- It appears they're leaking information about this position but I will keep updates going here: jobsAssembly Developers Wanted

vinii2508•11/12/24, 11:47 AM

someone here have worked with node red, modbus, opcua?

Vvinii2508 someone here have worked with node red, modbus, opcua?

Umesh Lokhande•11/12/24, 11:58 AM

Hey Vini, not the exact combination but feel free to post questions. You can expect some help with Node-RED and Modbus

vinii2508•11/12/24, 12:07 PM

im trying to read a variable from my plc and send it to an opcua server, using node-red, but i can’t send, the read is okay

Vvinii2508 im trying to read a variable from my plc and send it to an opcua server, using n...

Umesh Lokhande•11/12/24, 12:16 PM

could you please share the node flow you designed to extract the variable value. Provide more info. about the things you have done or tried so far.

UUmesh Lokhande could you please share the node flow you designed to extract the variable value....

vinii2508•11/12/24, 12:31 PM

flow.txt11.21KB

vinii2508•11/12/24, 12:31 PM

vinii2508•11/12/24, 12:51 PM

for some reason the variable is not saving the value read from modbus and gives me 0

Vvinii2508 for some reason the variable is not saving the value read from modbus and gives ...

Umesh Lokhande•11/12/24, 4:04 PM

I'm not sure what exact data and in what format you're getting from Modebus. I hope you've created custom the function to properly store data in the correct format before you print on the node-red debug console. Here is a detailed video about processing and storing data https://www.youtube.com/watch?v=IpwihQf6Kqo video timestamp: 08:58 Function Node - Storing and retrieving from variables

fbiego•11/13/24, 8:08 AM

Hello! I'm Felix, an Embedded Software Engineer. I've been working on various projects with LVGL and ESP32, and I'm excited to share some of my work here. Looking forward to connecting with you all!