What are the best practices for minimizing power consumption in a microcontroller-based IoT device t

What are the best practices for minimizing power consumption in a microcontroller-based IoT device that uses LoRa for communication?

Wwafa_ath What are the best practices for minimizing power consumption in a microcontrolle...

techielew•2/24/24, 2:07 PM

@BenCos18 you’ve never worked an MCU-based LoRa node have you?

Ttechielew @BenCos18 you’ve never worked an MCU-based LoRa node have you?

BenCos18•2/24/24, 2:23 PM

Esp32 boards generally
Planning to get round to doing some more with them in a few weeks once I get ahead with college work

BenCos18•2/24/24, 2:24 PM

They have a sx1276 built into them and then I use the lmic library iirc

Saßì•2/24/24, 4:20 PM

@SuperCoolCat 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.

youcef_ali•2/24/24, 5:28 PM

What are the strategies for implementing adaptive data rate (ADR) in #LoRaWAN to balance energy efficiency and network coverage?

BBenCos18 Esp32 boards generally Planning to get round to doing some more with them in a...

techielew•2/25/24, 3:00 AM

Really? Somewhat surprised. Are you just using dev/eval kits?

Yyoucef_ali What are the strategies for implementing adaptive data rate (ADR) in #LoRaWAN to...

techielew•2/25/24, 3:09 AM

Seems like @wafa_athmani @youcef_ali @aymen ammari need to build an LPWAN system together under the guidance of @BenCos18 lol.

Not sure about @aymen ammari use case that requires cellular over LoRaWAN so like @orionrobots I’d be curious to hear about the amount of data transmitted etc before commenting further.

As for @wafa_athmani and @youcef_ali you may both want to look into ADR. It’s only good for stationary deployments but it adjusts the transmit power and data rate of the gateway/server based on the received signal strength of the device/node/endpoint so you should be able to get the power/performance optimization you’re looking for.

Ttechielew Seems like @wafa_athmani @youcef_ali @aymen ammari need to build an LPWAN system...

techielew•2/25/24, 3:12 AM

Some more here: https://lora-developers.semtech.com/documentation/tech-papers-and-guides/implementing-adaptive-data-rate-adr/implementing-adaptive-data-rate

Regional params here: https://lora-alliance.org/lorawan-for-developers/

Any insight from LoRa users/developers in the @Wired & Wireless Networking group is helpful.

LoRa Alliance®

LoRaWAN for Developers - LoRa Alliance®

The LoRaWAN® is a Low Power Wide Area (LPWA) end-to-end system architecture designed to wirelessly connect battery operated ‘things’ to the internet in regional, national or global networks. The architecture […]

Saßì•2/25/24, 3:21 AM

@imad ar 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.

Accur4te•2/25/24, 4:31 AM

anyone with pcb design experience ? i want to make a custom esp32 with gsm build in

AAccur4te anyone with pcb design experience ? i want to make a custom esp32 with gsm build...

techielew•2/25/24, 4:44 AM

@Petr Dvořák @Joseph Ogbonna

AAccur4te Ohk like in my case I want to upload data from local mqtt server ( raspi) and co...

Umesh Lokhande•2/25/24, 5:34 AM

Hi @accur4te Yes, this is possible. The only catch is usually web hosting companies will not allow changes on the web hosting server. So better to take data from AWS IoT CoreAWS IoT Core to a custom dashboard which will be hosted on some kind of server like from AWS EC2, Digital Ocean etc. and then link to your business website. Best wishes!

Petr Dvořák•2/25/24, 9:35 AM

@accur4te Hello, Yes, I have some small pcb design experience. How can I help you?

Ttechielew Really? Somewhat surprised. Are you just using dev/eval kits?

BenCos18•2/25/24, 9:54 AM

for now yep

Ttechielew Seems like @wafa_athmani @youcef_ali @aymen ammari need to build an LPWAN system...

BenCos18•2/25/24, 9:54 AM

lol I just use the things network to handle the gateway stuff atm

BenCos18•2/25/24, 9:55 AM

Means I can have my stuff work anywhere their is a gateway also without changing code

BenCos18•2/25/24, 9:56 AM

BBenCos18 Means I can have my stuff work anywhere their is a gateway also without changing...

techielew•2/25/24, 10:41 AM

Have you tried Helium?

Ttechielew Have you tried Helium?

BenCos18•2/25/24, 10:42 AM

Not a fan of their model with regard to crypto tbh
and also you can't use a diy gateway on them and have to buy a premade one iirc

PPetr Dvořák @accur4te Hello, Yes, I have some small pcb design experience. How can I help yo...

Accur4te•2/25/24, 11:42 AM

Can you pls design a custom esp32 dev board like I want to add gsm module to it , can you do that for me . I have build esp32 schematic .

AAccur4te Can you pls design a custom esp32 dev board like I want to add gsm module to it ...

Petr Dvořák•2/25/24, 11:53 AM

Please send me a PDF of the schematic and I will prepare a price quotation for you.

Navadeep•2/25/24, 6:30 PM

Came across this quite a champion reference design - anything with edge processing, robotics, mobillity apps, here you see...

https://www.nxp.com/design/design-center/designs/navqplus-ai-ml-companion-computer-evk-for-mobile-robotics-ros-ground-stations-and-camera-heads:8MPNAVQ

NavQPlus AI/ML Companion Computer EVK for Mobile Robotics, ROS, Gro...

Mission computer supporting PX4, ROS, ROS2 Ubuntu, vision systems, accelerated AI/ML with NPU, CAN-FD and T1 Ethernet for drones, rovers, robotic vacuum cleaners and agricultural equipment.

NNavadeep Came across this quite a champion reference design - anything with edge processi...

techielew•2/25/24, 6:56 PM

This is dope. Let me ask around,

Ttechielew This is dope. Let me ask around,

techielew•2/25/24, 6:57 PM

Love the ROS support, huge memory, display and industrial interfaces

AAccur4te anyone with pcb design experience ? i want to make a custom esp32 with gsm build...

Joseph Ogbonna•2/25/24, 7:05 PM

how can i help

AAccur4te Can you pls design a custom esp32 dev board like I want to add gsm module to it ...

Accur4te•2/25/24, 7:17 PM

@Joseph Ogbonna

AAccur4te @Joseph Ogbonna

Joseph Ogbonna•2/25/24, 7:19 PM

ya, you can give me your design details and requirement

Camila_99$$•2/25/24, 8:57 PM

Good evening everyone ! i need help , I'm developing a project with an STM32 microcontroller and need precise timing control. What timer and PWM features does the STM32 offer, and how can they be configured for accurate timekeeping and signal generation????

techielew•2/25/24, 9:19 PM

Hey @Anfel, welcome! Can you introduce yourself and your technical background?

CCamila_99$$Good evening everyone ! i need help , I'm developing a project with an STM32 mic...

techielew•2/25/24, 9:22 PM

Which STM32 are you using? There are lots

Ttechielew Which STM32 are you using? There are lots 🙂

Camila_99$$•2/25/24, 9:42 PM

STM32F413VGT3

CCamila_99$$STM32F413VGT3

techielew•2/25/24, 9:45 PM

Bunch of timers on this one.

techielew•2/25/24, 9:45 PM

But wait, there's more..

Ttechielew But wait, there's more..

techielew•2/25/24, 9:51 PM

There's more info about the timers on pages 33-36 here: https://www.mouser.com/datasheet/2/389/stm32f413cg-1851205.pdf

Unfortunately, the "best way" to configure the features is going to depend on your application and system design. This SKU supports both internal clock references and up to 18 timers with different resolutions that can be used to generate your pulses.

Ttechielew There's more info about the timers on pages 33-36 here: https://www.mouser.com/d...

techielew•2/25/24, 9:52 PM

A bunch of data in section 6.3 of the linked-to doc

techielew•2/25/24, 10:13 PM

Should be a good Office Hours Meetup coming up next Friday, 3/1. We'll be putting our heads together to see if we can solve a real-world startup scalability challenge. Check out the prompt, add your thoughts, and get a reminder on your calendar

https://discord.com/channels/1130679493799977062/1211434946116329492

See you Friday!

CCamila_99$$Good evening everyone ! i need help , I'm developing a project with an STM32 mic...

Navadeep•2/26/24, 2:44 AM

If signal generation is your target, the precision depends on what frequency of signal you desire. You can do you using DAC and this example shows reliably generating 26kHz signal https://github.com/angst7/stm32_functgen

Also, there are chips like https://www.analog.com/en/products/ad9833.html that can do upto 12.5MHz arbitrary signal generation controlled over I2C

GitHub

GitHub - angst7/stm32_functgen: Simple function generator for the s...

Simple function generator for the stm32 breakout board (or any stm32f4 for that matter) - angst7/stm32_functgen

Saßì•2/26/24, 4:57 AM

@CancerousDrag 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.

techielew•2/26/24, 9:50 AM

New poll, y'all. Let us know what your IDE of choice is: https://discord.com/channels/1130679493799977062/1199293807737450538/1211611134411673601

techielew•2/26/24, 10:06 AM

Forgot to add the thread, @Manuel! Thanks!

aymen ammari•2/26/24, 10:22 AM

What are the default Tx/Rx pins in esp32 WROOM 32?

Saßì•2/26/24, 10:42 AM

@Jacob but as corn on the cob 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•2/26/24, 11:36 AM

@-_-) 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.

Aaymen ammari What are the default Tx/Rx pins in esp32 WROOM 32?

Umesh Lokhande•2/26/24, 4:03 PM

The default Tx/Rx uses UART0UART0 which is mapped on GPIO1 (TX0) and GPIO3 (RX0)

wafa_athOP•2/26/24, 4:52 PM

Hi everyone , any suggestion about reliable third-party libraries or frameworks for building web servers on ESP8266 or ESP32? What aspects should be taken for web-based applications on ESP platforms?

Aaymen ammari What are the default Tx/Rx pins in esp32 WROOM 32?

techielew•2/26/24, 5:41 PM

What's your project?

Wwafa_ath Hi everyone , any suggestion about reliable third-party libraries or frameworks...

techielew•2/26/24, 5:41 PM

@Aditya thakekar and @Joseph Ogbonna can probably add some input here

Wwafa_ath Hi everyone , any suggestion about reliable third-party libraries or frameworks...