Ha, well if that's the case check out the build server where you can customize your fimware: https:/

Ha, well if that's the case check out the build server where you can customize your fimware: https://custom.ardupilot.org/. You should be able to strip out a significant amount to get under 1 MB, which will open your options.

Or you can just go through the list here: and see what the cheapest board is.

ArduPilot

ArduPilot Custom Firmware Builder

ArduPilot Custom Firmware Builder. It allows to build custom ArduPilot firmware by selecting the wanted features.

Yyoucef_ali Your mic 🎤 is connected with an #adc or it is #I2S peripheral?

wafa_ath•3/7/24, 8:13 AM

I am using Knowles SPH0641LU4H-1

and yes it is i2c

techielewOP•3/7/24, 8:13 AM

Hey @abhishek_gangane. 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?!

Ttechielew Ha, well if that's the case check out the build server where you can customize y...

aymen ammari•3/7/24, 8:15 AM

That's good , I'll search if there any tutorial how to use it, ill show you the results later

aymen ammari•3/7/24, 8:16 AM

@abhishek_gangane. Welcome to the server

Wwafa_ath I am using Knowles SPH0641LU4H-1 🎤 and yes it is i2c

youcef_ali•3/7/24, 8:16 AM

There is a difference between i2c and i2s

Yyoucef_ali There is a difference between i2c and i2s

wafa_ath•3/7/24, 8:19 AM

Aa yes yes it is i2s also

abhishek_gangane.•3/7/24, 8:20 AM

Hii @techielew
I am newbie in firmware development, I am working on full fledged project of making Digital Vending Machine consists of UPI payment gateway with ecommerce webserver with ESP32.
I want to learn some hardware aspects of firmware development like hardware design, PCB design and fabrication and many more.
Thank you.

Wwafa_ath Aa yes yes it is i2s also

youcef_ali•3/7/24, 8:20 AM

What is your fpga board ?

Aabhishek_gangane.Hii @techielew I am newbie in firmware development, I am working on full fledge...

Umesh Lokhande•3/7/24, 8:36 AM

Hi @abhishek_gangane. interesting project. I'd like to know if you're using APIs for payment gateway integration. Is these API provided by UPI, BharatPe or others?

Aabhishek_gangane.Hii @techielew I am newbie in firmware development, I am working on full fledge...

techielewOP•3/7/24, 8:37 AM

And what sort of display are you using?

UUmesh Lokhande Hi @abhishek_gangane. interesting project. I'd like to know if you're using APIs...

abhishek_gangane.•3/7/24, 8:54 AM

Yeah, currently I'm testing razorpay api for dynamic qrcode generation and giving feedback system to API via JSON

Ttechielew And what sort of display are you using?

abhishek_gangane.•3/7/24, 8:57 AM

I am on esp32 touch screen display using lvgl library but first wants to make work on websocket i.e., real time client and server response

Aabhishek_gangane.I am on esp32 touch screen display using lvgl library but first wants to make wo...

techielewOP•3/7/24, 9:24 AM

nice there's plenty of esp32 exp here via @Umesh Lokhande @Aditya thakekar @youcef_ali @Joseph Ogbonna etc

Aditya thakekar•3/7/24, 9:26 AM

Great. You can. For display you can just you print statements. And work on webscokets. Later you can add all the displays

Wwafa_ath I am using Knowles SPH0641LU4H-1 🎤 and yes it is i2c

Navadeep•3/7/24, 9:42 AM

Yeah, this part looks good. It has PDM output as well. Check out this blog https://community.element14.com/challenges-projects/design-challenges/pathprogrammable3/b/blog/posts/p2p3-amd-vivado-cascaded-integrator-comb-cic-compiler-pdm-microphone-to-pcm-decimation

LMtx•3/7/24, 10:34 AM

In my latest article, I discuss a particular aspect of designing the MQTT Topic Structure: Should we include an asset's Physical Location in the topic Structure?

What is your opinion?

https://www.thingrex.com/mqtt_location/

Factors to consider when deciding if include the Physical Location ...

Factors to consider when deciding if include the Physical Location of an Asset in the MQTT Topic Structure

LLMtx In my latest article, I discuss a particular aspect of designing the MQTT Topic ...

nour_oud•3/7/24, 2:00 PM

Interesting article @LMtx Thanks for sharing!

Nnour_oud Interesting article @LMtx Thanks for sharing!

LMtx•3/7/24, 2:01 PM

I am glad that you liked it

Joseph Ogbonna•3/7/24, 2:47 PM

Good day, who knows any LCD display vendor, that has small LCD around 20mm*20mm rounded shape. Or a rectangular shape around that size that uses I2C or SPI protocol. Need it in a design. @PCB & Analog @MCU, MPU & Firmware

pallavaggarwal•3/7/24, 2:51 PM

1/4th size is here

pallavaggarwal•3/7/24, 2:51 PM

https://www.buydisplay.com/download/manual/ER-OLED0.32-1_Datasheet.pdf

pallavaggarwal•3/7/24, 2:52 PM

you can search other options

Ppallavaggarwal you can search other options

Joseph Ogbonna•3/7/24, 3:20 PM

Ok let me do that

Camila_99$$•3/7/24, 3:53 PM

Hii guys,
What is the best burner/programmer for the AVR microcontroller that is universal and can program most of the AVR chips?

Saßì•3/7/24, 4:35 PM

Friendly Reminder about Upcoming Event
https://discord.com/invite/V2TYgEg8?event=1213840801101119538

CCamila_99$$Hii guys, What is the best burner/programmer for the AVR microcontroller that is...

Umesh Lokhande•3/7/24, 5:10 PM

I use AVR ISP MKII Programmer but if you want to save a few $ then the AVR ISP Programmer with USBasp firmware would also do the job.

Camila_99$$•3/7/24, 5:39 PM

Aah yes actually that’s what I’m looking for

Camila_99$$•3/7/24, 5:41 PM

@Umesh Lokhande Thanks for the quick response

CCamila_99$$Aah yes actually that’s what I’m looking for

Umesh Lokhande•3/7/24, 5:46 PM

Welcome! I've used both programmers with Windows and Ubuntu Linux with AVRDude both work like a charm

Camila_99$$•3/7/24, 10:02 PM

Budweiser•3/7/24, 10:48 PM

Considering the saying "jack of all trades, master of none".
What have you achieved mastery in?
If none yet, what would you want to become a Master of.

BBudweiser Considering the saying "jack of all trades, master of none". What have you achie...

Flo•3/7/24, 11:21 PM

I like that question. I want to master the honesty towards myself. If we are talking technology it is ARM, U-Boot and Linux.

BBudweiser Considering the saying "jack of all trades, master of none". What have you achie...

techielewOP•3/8/24, 2:08 AM

Nice question. I'd really like to master HDL

BBudweiser Considering the saying "jack of all trades, master of none". What have you achie...

techielewOP•3/8/24, 2:09 AM

How about you?

Budweiser•3/8/24, 2:09 AM

I'd like to master rf circuit design, I have worked on the digital signal processing/software side of RF, but not done the hardware side

Budweiser•3/8/24, 2:10 AM

@techielew you ever heard of ModelSim?

BBudweiser I'd like to master rf circuit design, I have worked on the digital signal proces...

techielewOP•3/8/24, 2:11 AM

Oh that's a good one. That's like a dark art only known to the Scandinavians lol

BBudweiser @techielew you ever heard of ModelSim?

techielewOP•3/8/24, 2:11 AM

I thought it sounded familiar and then looked it up and yes I have. Have you/do you use it?

Budweiser•3/8/24, 2:11 AM

when I worked in FPGA development I used it

Budweiser•3/8/24, 2:12 AM

I used VHDL, before doing anything further down the pipeline, I'd make it first work in ModelSim

Budweiser•3/8/24, 2:12 AM

if you want to e.g. learn VHDL, I extremely recommend using that, you can learn VHDL on that level much like you learn a software language

Budweiser•3/8/24, 2:12 AM

try out implementing basic digital circuits, simulate them, validate them..

Budweiser•3/8/24, 2:13 AM

you can also feed in data from files, and save output to files, so can already simulate signal processing stuff there

Budweiser•3/8/24, 2:14 AM

this is not going to get you all the way to making (functional/good) FPGA designs, but if you come from zero and have nobody else to guide you, then having all steps at once is a bit much, maybe do this, afaik ModelSim is free (at least it was some years ago)

Budweiser•3/8/24, 2:14 AM

so you can just download it, write your code, and simulate it

techielewOP•3/8/24, 2:14 AM

I was just looking for a free version

techielewOP•3/8/24, 2:14 AM

looks like it was when altera was still it's own version of altera

Budweiser•3/8/24, 2:14 AM

so just get an old version

Budweiser•3/8/24, 2:14 AM

for this purpose that won't matter

Ha, well if that's the case check out the build server where you can customize your fimware: https:/

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