What are some guidelines I should take while selecting an inductor for my buck converter design. Nee

What are some guidelines I should take while selecting an inductor for my buck converter design. Need help on this. @PCB & Analog

CChimmuanya Okere What are some guidelines I should take while selecting an inductor for my buck c...

electro_coco•4/11/24, 6:27 PM

Saturation current
Self resonant frequency
Max current

Eelectro_coco Saturation current Self resonant frequency Max current

Chimmuanya OkereOP•4/11/24, 6:30 PM

Thanks, the converter has a current of 1A and operates at the range of 500KHz any good choice on this. You can send a link if any. Thanks

electro_coco•4/11/24, 6:32 PM

@Chimmuanya Okere select 1.5 times of current output u r going to draw from your buck
Like 3a inductor with self resonant frequency in mhz

Eelectro_coco @Chimmuanya Okere select 1.5 times of current output u r going to draw from your...

Chimmuanya OkereOP•4/11/24, 6:33 PM

CChimmuanya Okere What are some guidelines I should take while selecting an inductor for my buck c...

Joseph Ogbonna•4/11/24, 8:41 PM

Also check based on your application if you will need a shielded or an unshielded Inductor, when planning your design.

Saßì•4/12/24, 3:42 AM

@[CV] Ukhand Ithunzi @�� @burgscarter @TatachekFM @Shine Welcome to the community! We're eager to learn more about you. Can you introduce yourself and tell us about your professional life?

techielew•4/12/24, 6:36 AM

Hi @MCU, MPU & Firmware and @PCB & Analog folks. Today at 1500 GMT, @Navadeep will be leading this week's Office Hours session on Component Inventory, Sourcing & Planning! If you're learning how to navigate component evaluation and lifecycles, this is a great place to start.

Join here at 15:00: https://discord.gg/devheads?event=1228231205745332264

Muthukrishnan•4/12/24, 6:47 AM

Hi all, How to select Half bridge driver

MMuthukrishnan Hi all, How to select Half bridge driver

techielew•4/12/24, 6:52 AM

@Joseph Ogbonna @ShreeshaN @Petr Dvořák @pallavaggarwal may have some advice but this is also a great question for @Navadeep during OH later today—especially with respect to how you can effectively source whatever you select: general-dev-chat

MMuthukrishnan Hi all, How to select Half bridge driver

techielew•4/12/24, 6:53 AM

Also helpful if you can provide some context around the application/use case/system design

Muthukrishnan•4/12/24, 6:55 AM

We want 24V 7A BDC control circuit

Ttechielew @Joseph Ogbonna @ShreeshaN @Petr Dvořák @pallavaggarwal may have some advice but...

Petr Dvořák•4/12/24, 9:15 AM

Each renowned manufacturer provides engineers with application notes, reference designs and design guides. I believe the best start is to study available literature before.

wafa_ath•4/12/24, 9:42 AM

Hi guys. Anyone here could help to identify this part.. it's part of DSP preamp board...

LMtx•4/12/24, 10:20 AM

The one and only @techielew leading the panel conversation during the IoT Stars meeting. It was great meeting you in person!

LLMtx The one and only @techielew leading the panel conversation during the IoT Stars ...

Joseph Ogbonna•4/12/24, 10:23 AM

Awesome

LLMtx The one and only @techielew leading the panel conversation during the IoT Stars ...

Navadeep•4/12/24, 12:44 PM

Big shot Brandon! This is awesome @techielew

More on this post by ARM: https://x.com/ArmSoftwareDev/status/1777784836884705389

Arm Software Developers (@ArmSoftwareDev) on X

Hello from Nuremberg for the first day of #EW24.

The fire-side chat is heating up.

We're here with @iotstars and Distinguished Arm Ambassador, @gy4nt, discussing how to ensure a thriving ecosystem for edge AI.

Twitter

•

4/9/24, 7:45 PM

LLMtx The one and only @techielew leading the panel conversation during the IoT Stars ...

aymen ammari•4/12/24, 12:46 PM

Looks exciting

Saßì•4/12/24, 1:52 PM

LLMtx The one and only @techielew leading the panel conversation during the IoT Stars ...

Camila_99$$•4/12/24, 2:17 PM

Wow! Brandon ! We are so proud of you

@techielew

Camila_99$$•4/12/24, 2:19 PM

Hello everyone! I have a question

Camila_99$$•4/12/24, 2:21 PM

I would like to send values from an Arduino to another one (one value every 10 minutes). I have a distance of 80-100m outdoors with trees between the Arduinos. The transmitter should consume as little power as possible because it will be on battery, while the receiver will be on mains power.
What solution do you suggest? I don’t know the maximum distance (WiFi, radio, Bluetooth, IR…).
Thanks

CCamila_99$$I would like to send values from an Arduino to another one (one value every 10 m...

Joseph Ogbonna•4/12/24, 2:23 PM

You can use a simple Lora Device if you are not sure of the distance. It acts as a radio transmitter and covers a large area

CCamila_99$$I would like to send values from an Arduino to another one (one value every 10 m...

wafa_ath•4/12/24, 2:35 PM

hi camila , recommend using LoRa (Long Range) technology, for long-range, low-power wireless communication , you'll need a LoRa transceiver module compatible with Arduino, such as the RFM95W or SX1276/77/78/79 module

LLMtx The one and only @techielew leading the panel conversation during the IoT Stars ...

Marvee Amasi•4/12/24, 2:40 PM

Great

CCamila_99$$I would like to send values from an Arduino to another one (one value every 10 m...

InsightMike•4/12/24, 2:40 PM

Another option is Bluetooth with Coded PHY support. This extends the range of bluetooth and is likely the lowest cost and power. LoRa is a good option as well, but your receiver has to function as a gateway. LoRa will have the best range, but BT coded PHY should meet or exceed your range needs as well. As always with wireless range, I would do some field testing with existing product or dev kits before finalizing your design. Also, antenna design/performance is always a large factor with any wireless design.

SSaßì Hi @MCU, MPU & Firmware and @PCB & Analog folks. Today at 1500 GMT, @Navadeep wi...

techielew•4/12/24, 2:58 PM

@PCB & Analog and @MCU, MPU & Firmware, should be another hot one from @Navadeep!

SSaßì Hi @MCU, MPU & Firmware and @PCB & Analog folks. Today at 1500 GMT, @Navadeep wi...

Navadeep•4/12/24, 2:58 PM

Starting in just about 2 mins. See ya'll there!

JJoseph Ogbonna You can use a simple Lora Device if you are not sure of the distance. It acts as...

Camila_99$$•4/12/24, 3:09 PM

Ok, thank you! I got it!

Wwafa_ath hi camila , recommend using LoRa (Long Range) technology, for long-range, low-p...

Camila_99$$•4/12/24, 3:15 PM

Yeah thanks Wafa actually I was wondering about the option of nrf24l01 + pa + lna? Does it consume more power

IInsightMike Another option is Bluetooth with Coded PHY support. This extends the range of bl...

Camila_99$$•4/12/24, 3:23 PM

Okk thank you Mike I’m curious,

have you encountered any specific challenges or drawbacks when compared to LoRa? I’m always interested in learning from others.

Navadeep•4/12/24, 4:17 PM

A few links from today's OH:

Partsbox website or component management: https://partsbox.com/
Compiled list of websites to order part samples(section e): https://docs.google.com/document/d/1Yb828TpndOA_jOLzlhR7l8-WQbaxUj8Vf9b-Ge7XZKk/edit?usp=sharing

And, this is how I see parts management as a maker. At one point, everything gets into one single state proving the quantum entanglement phenomenon.

MMuthukrishnan Hi all, How to select Half bridge driver

Navadeep•4/12/24, 4:24 PM

take a look at this catalog of BDC drivers. They are integrated driver solutions that come with protection and control feature within the chip https://www.infineon.com/cms/en/product/power/motor-control-ics/brushed-dc-motor-control-ics/single-half-bridge-ics/#!highlights

MOTIX™ | Single Half-Bridge ICs - Infineon Technologies

Cost-optimized solutions for protected high-current PWM motor drives with very low board-space consumption

scitechindian•4/12/24, 5:21 PM

Missed today's event, where can I find the recording

Sscitechindian Missed today's event, where can I find the recording

Navadeep•4/12/24, 5:51 PM

https://www.linkedin.com/posts/devheadscommunity_devheads-weekly-oh-meetup-component-sourcing-activity-7184565426780004352-7qeT?utm_source=share&utm_medium=member_desktop&lipi=urn%3Ali%3Apage%3Ad_flagship3_detail_base%3BBOKTHO2KR%2ByXbex8w2GODQ%3D%3D strts after 6:00

DevHeads IoT Integration Server on LinkedIn: DevHeads weekly O.H. M...

DevHeads Weekly Office Hours Meetup: Component Sourcing, Inventory & Planning, Part 1

aymen ammari•4/12/24, 6:08 PM

Hi everyone, How do you make sure all parts of your my drone get enough power without making it too heavy or using up too much battery too quickly?

Andrew•4/12/24, 7:16 PM

This server is amazing

Martin K.•4/12/24, 8:54 PM

Hello there!

My colleague @Jens Hagemeyer invited me here (indirect pointer to @techielew after our meeting at the embedded world conference).

About me: Electrical engineer, research assistant at Bielefeld University, Germany and co-founder of the startup paraXent. My main expertise is FPGA architecture design (VHDL, HLS), FPGA and embedded Linux design flows.
Involved in PICMG (COM-HPC) and SGET standardization committees.

Interests: heterogeneous computing architectures. New, efficient FPGA programming methodologies.

Build most of my home automation hardware myself using Arduinos, CAN Bus, ESPHome & Home Assistant

Looking forward to learn & chat here!

~Martin

MMartin K.Hello there! My colleague @Jens Hagemeyer invited me here (indirect pointer to ...

techielew•4/12/24, 8:57 PM

Welcome, Martin! Glad to have you!

What’s one thing you’re hoping to learn/work on in the near future (related to electronics/embedded design)? And what’s one thing you’d like to see from the community that would keep you coming back?

Martin K.•4/12/24, 9:03 PM

Good Questions

I guess I will browse it once a week or so and just look for interesting topics. I have planned some open source hardware stuff (small PCBs for home automation) and will post them in here (after pushing it to github)

MMartin K.Hello there! My colleague @Jens Hagemeyer invited me here (indirect pointer to ...

Navadeep•4/13/24, 3:09 AM

Great! Welcome to DevHeads @Martin K. !

Saßì•4/13/24, 5:23 AM

@Speed @Dark Welcome to the community! We're eager to learn more about you. Can you introduce yourself and tell us about your professional life?

Speed•4/13/24, 5:47 AM

No problem! Cattle rancher from Namibia, EE degree from Pretoria, SW post graduate degree from an Ivy League school in Massachussets, Aerospace to Medical, moved to Texas, Systems Engineer at Flex Medical to Law Enforcement Radar at ACI and writing Firmware for a Neuromodulation implantable device today. All while creating boards and code using less wires in model railroads where today we are using MQTT with ESP01 devices in mqTrains(.com)!

Marvee Amasi•4/13/24, 6:09 AM

Please I need to know how I can efficiently process Kafka event streams, store relevant data in memory, and deliver it to a REST API without persisting events. I am new to using Apache Kafka.
@Middleware & OS

MMarvee Amasi Please I need to know how I can efficiently process Kafka event streams, store ...

Joseph Ogbonna•4/13/24, 9:20 AM

To efficiently process Kafka event streams without saving them, first, understand the data flow using Kafka's consumer groups. Then, use in-memory data structures to store relevant information temporarily. Finally, design a REST API interface to deliver the processed data to callers. Familiarize yourself with Kafka's consumer APIs and explore libraries for in-memory data handling.

wafa_ath•4/13/24, 7:30 PM

hello everyone. what is the best service to send periodic HTTP requests (pings) to your application's URL every 10-15 minutes

aymen ammari•4/13/24, 7:33 PM

There are several services you could use for that purpose. Some popular ones include UptimeRobot, Pingdom, and StatusCake.