Hi fellow devs, I'm writing an article about OLED displays. It's a simple article with practical exa

Hi fellow devs,
I'm writing an article about OLED displays. It's a simple article with practical examples on how to drive an OLED display with an Arduino board, A Nucleo board and - last but not least - the 10-cent RISC-V MCU from WCH.

The article is still in construction. You can find it here:
https://embeetle.com/#blog/oled
I'll also post it on the DevHeads server once it's ready.

kristof-at-embeetleOP•3/15/24, 10:42 PM

kristof-at-embeetleOP•3/15/24, 10:42 PM

I'm looking for co-authors. If you've got a working OLED display sample project with an MCU-board - please contact me.

kristof-at-embeetleOP•3/15/24, 10:44 PM

I can then add your sample project to our Embeetle database - such that people from all over the world can download your project. Of course you'll get due credit in the readme.txt file

CCamila_99$$I’d suggest checking disk space usage

Albaphet soup•3/16/24, 12:31 AM

I havr 250 gigs set aside for le linux:<

Albaphet soup•3/16/24, 12:32 AM

I may have figured it out possibly, i had to create and mount 3 different partitions for root, home, and the efi boot so we will see

Albaphet soup•3/16/24, 12:41 AM

If i get this to work itll be so hype because i cant game much running windows but manjaro gaming comes with compatibility layers and allat

Kkristof-at-embeetle Hi fellow devs, I'm writing an article about OLED displays. It's a simple articl...

Chimmuanya Okere•3/16/24, 1:00 AM

Please where did you get this OLED from, can I get the vendor

Saßì•3/16/24, 3:35 AM

@MJ Mokhtar Welcome! Can you let us know a bit about your technical background, what brings you to DevHeads, and what you're looking to learn/contribute?!

Marvee Amasi•3/16/24, 6:25 AM

Good day guys, I am running a program on Arduino IDE while utilizing Adafruit ESP32 Feather MCU. I have three sensors reading data thrice per run, with a 4G connection to transmit data to the SIM carrier's cloud database (likely on Azure). Additionally, I manage a buzzer and LEDs for device status indication. Do I need RTOS for task scheduling? Any suggestions to enhance or improve the device?

MMarvee Amasi Good day guys, I am running a program on Arduino IDE while utilizing Adafruit E...

aymen ammari•3/16/24, 6:38 AM

In my opinion, yes you need, maybe build a mobile application for it, and offline notifications and control threw SMS in case the user has no Internet connection

Aaymen ammari In my opinion, yes you need, maybe build a mobile application for it, and offlin...

Marvee Amasi•3/16/24, 7:02 AM

Hmm building a mobile application sounds interesting @aymen ammari . Just asking , what would be the key features of the app, and how would it enhance the user experience compared to traditional methods of device control and monitoring?

aymen ammari•3/16/24, 7:04 AM

Hmm good question

aymen ammari•3/16/24, 7:06 AM

Well you can link it to tuya app or smartlife, but your own app is better

MMarvee Amasi Good day guys, I am running a program on Arduino IDE while utilizing Adafruit E...

Umesh Lokhande•3/16/24, 8:09 AM

The need to use RTOS is based on many factors considering your project requires managing multiple tasks. I'd suggest the use of RTOS in case you're already comfortable with porting RTOS on MCU. Otherwise, you can implement task scheduling without using RTOS to keep things simple

boualleg sabrina•3/16/24, 8:17 AM

morning guys

UUmesh Lokhande The need to use RTOS is based on many factors considering your project requires ...

Marvee Amasi•3/16/24, 8:34 AM

Thanks for the insight too @Umesh Lokhande I'm now weighing the pros and cons of using RTOS, especially considering the complexity of managing multiple tasks. I'll try out both options further to determine the best approach for task scheduling in my project. Do you have any recommendations or resources for getting started with RTOS porting on the MCU?

Bboualleg sabrina morning guys

Marvee Amasi•3/16/24, 8:35 AM

Morning to you @boualleg sabrina

Saßì•3/16/24, 9:27 AM

@Flash Gordon Welcome! Can you let us know a bit about your technical background, what brings you to DevHeads, and what you're looking to learn/contribute?!

MMarvee Amasi Good day guys, I am running a program on Arduino IDE while utilizing Adafruit E...

Aditya thakekar•3/16/24, 11:31 AM

Yes best if you use rtos. Pinnedtocore type functions

MMarvee Amasi Good day guys, I am running a program on Arduino IDE while utilizing Adafruit E...

boualleg sabrina•3/16/24, 12:12 PM

RTOS for task scheduling ensures timely execution of tasks based on their priorities

boualleg sabrina•3/16/24, 12:23 PM

https://www.youtube.com/watch?v=95yUbClyf3E

YouTubeDigiKey

Introduction to RTOS Part 3 - Task Scheduling | Digi-Key Electronics

The RTOS scheduler decides which task to run on a recurring basis, and some tasks can interrupt and run before other tasks in a process known as “preemption.”

The solution to the challenge in the video can be found here: https://www.digikey.com/en/maker/projects/introduction-to-rtos-solution-to-part-3-task-scheduling/8fbb9e0b0eed4279a2dd698f02c...

boualleg sabrina•3/16/24, 12:24 PM

here is a video that explains task scheduling

Bboualleg sabrina RTOS for task scheduling ensures timely execution of tasks based on their priori...

Marvee Amasi•3/16/24, 2:32 PM

Thanks @boualleg sabrina , this is very resourceful

Camila_99$$•3/16/24, 2:50 PM

Hi everyone PLZ what is the solution to this problem? The ATmega32 is not the first time I've used it but i haven't written anything on it, just a (read )operation.

CCamila_99$$Hi everyone PLZ what is the solution to this problem? The ATmega32 is not the fi...

Navadeep•3/16/24, 3:35 PM

High level, the chip is failing to power up:

Do you have a voltage setting jumper in the programmer? Check it and set to 5V if you're using a lower level.
Power both Vcc and AVcc with the same level(recommended even if you're not using ADC)
Connect to all the GND pins
Physically verify the pin voltages
Just noticed, also the RESET is active low - meaning it's state should be held high to keep it in operating mode. Verify if that's happening.

CCamila_99$$Hi everyone PLZ what is the solution to this problem? The ATmega32 is not the fi...

Umesh Lokhande•3/16/24, 3:41 PM

Hi, @Camila_99$$ from connections it seems to me you're powering ATmega32 MCU from ISP programmer. I'd suggest powering AVR from an external 5V regulated supply possibly using breadboard-friendly LM7805. Often I found that these ISP programmers are not good at providing 5V to make uploading work

kristof-at-embeetleOP•3/16/24, 5:55 PM

Hi @Chimmuanya Okere ,
You can find the vendors on the blogpost: https://embeetle.com/#blog/oled

kristof-at-embeetleOP•3/16/24, 5:56 PM

kristof-at-embeetleOP•3/16/24, 5:56 PM

Just click on one of these, it will unfold and show you where to buy the OLED.

Kkristof-at-embeetle Hi @Chimmuanya Okere , You can find the vendors on the blogpost: https://embeetl...

Chimmuanya Okere•3/16/24, 6:38 PM

Thanks

kristof-at-embeetleOP•3/16/24, 6:49 PM

Sent you a friends request, in case you have more questions

NNavadeep High level, the chip is failing to power up: 1. Do you have a voltage setting ju...

Camila_99$$•3/16/24, 7:45 PM

Aa ookk

wafa_ath•3/16/24, 7:47 PM

Hey guys, am using RTC module connected via I2C to keep track of time on Raspberry Pi. But the system time keeps resetting or becomes inaccurate ....

UUmesh Lokhande Hi, @Camila_99$$ from connections it seems to me you're powering ATmega32 MCU fr...

Camila_99$$•3/16/24, 7:51 PM

Thanks for the suggestion,,, I’ll give it a try

Wwafa_ath Hey guys, am using RTC module connected via I2C to keep track of time on Raspbe...

Marvee Amasi•3/16/24, 9:14 PM

@wafa_athmani Your RTC has time keeping issues, try

Check connections: Ensure your RTC module is securely connected via I2C.
Check your power supply: Ensure stable power source; unstable power can cause resets.
Battery Backup: Check battery on RTC module; dead battery can cause resets.
Configuration also: Double-check RTC module and Raspberry Pi configuration.
Software Updates: Ensure your Raspberry Pi OS and RTC drivers are up-to-date.

Or try another Raspberry Pi or power source to isolate the issue.

youcef_ali•3/16/24, 10:32 PM

Has anyone here worked with the EZ-USB™ FX2LP FX2G2 USB 2.0 Peripheral Controller from Cypress, specifically the CY7C68013A model?

Albaphet soup•3/16/24, 11:22 PM

Why is my linux down speed so so slow

Albaphet soup•3/16/24, 11:22 PM

Not even down speed it has slow disk write access or something

Yyoucef_ali Has anyone here worked with the EZ-USB™ FX2LP FX2G2 USB 2.0 Peripheral Controlle...

Aditya thakekar•3/17/24, 3:50 AM

What is the application?

MMarvee Amasi @wafa_athmani Your RTC has time keeping issues, try 1. Check connections: Ens...

wafa_ath•3/17/24, 4:03 AM

Thank you for your reply but Actually i tried doing all the above , + I don't have other raspberry

Yyoucef_ali Has anyone here worked with the EZ-USB™ FX2LP FX2G2 USB 2.0 Peripheral Controlle...

Navadeep•3/17/24, 4:24 AM

Have heard them - the USB peripheral controllers. What are you looking in this?

AAlbaphet soup Why is my linux down speed so so slow

techielew•3/17/24, 7:28 AM

Please offer more context of your build. @abhishek awasthi may be able to help.

NNavadeep Have heard them - the USB peripheral controllers. What are you looking in this?

youcef_ali•3/17/24, 7:41 AM

This controller is used in digital logic analyser, i want to use it to record lvds signal and do the process in the computer side

Wwafa_ath Thank you for your reply but Actually i tried doing all the above , + I don't ha...

Marvee Amasi•3/17/24, 9:41 AM

@wafa_athmani well might be electromagnetic interference.Also ensure RTC module works with your Pi, check for physical damage, refer to manufacturer instructions. I just hope this helps!

Wwafa_ath Thank you for your reply but Actually i tried doing all the above , + I don't ha...

Marvee Amasi•3/17/24, 9:47 AM

I will also encourage you to get another raspberry

techielew•3/17/24, 10:01 AM

Hey all—especially you @Middleware & OS and @MCU, MPU & Firmware devs—next week's Office Hours topic preview is "When to Use an OS/RTOS".

The meetup thread is open here: https://discord.com/channels/1130679493799977062/1218860707139944489.

Looking forward to your thoughts/comments and to seeing you March 22nd on at 15:00 GMT! Sign up for a reminder or login here on Friday: https://app.livestorm.co/devheads-community/devheads-weekly-office-hours-1/live?s=af985fcc-4b30-4052-88a3-a7ecdac61971#/

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DevHeads Weekly Office Hours | DevHeads System Integration Communit...

Saßì•3/17/24, 11:06 AM

@umairahmed17 Welcome! Can you let us know a bit about your technical background, what brings you to DevHeads, and what you're looking to learn/contribute?!

Chimmuanya Okere•3/17/24, 1:27 PM

I was ordering a PCB from JLCPCB with a size of 8cm*4cm, 4 layers board. When I placed an order for 15 pieces it came out about $20. But when I increased the amount of PCB to 20 pieces, the board price increased drastically to about 40 dollars. When I ask they said it's pcb panelization. How does this affect the cost. @PCB & Analog

CChimmuanya Okere I was ordering a PCB from JLCPCB with a size of 8cm*4cm, 4 layers board. When I ...

aymen ammari•3/17/24, 1:31 PM

I think it's related to Copper plate that should enter the machine for manufacturing, 15 seems to use only one plate and for 20 they'll be using 2 of them and the second one the majority of it will be thrown as Droppings

aymen ammari•3/17/24, 1:32 PM

Try increasing the amount to 29 for example and it will stay nearly 40$

Hi fellow devs, I'm writing an article about OLED displays. It's a simple article with practical exa

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