DevHeads IoT Integration Server•2y ago

Hello! Is here anybody familiar with sensor MICS-6814? That´s sensor for CO,NO2 and NH3.

SSatan Hello! Is here anybody familiar with sensor MICS-6814? That´s sensor for CO,NO2 ...

SatanOP•3/12/24, 8:20 PM

https://cz.mouser.com/ProductDetail/Amphenol-SGX-Sensortech/MICS-6814?qs=YCa%2FAAYMW01pNK%252BnW3Jo7g%3D%3D

SatanOP•3/12/24, 8:21 PM

It has got very confused datasheet and wiring. If here someone who has a few experience with that, I will be glad, thank you.

Chimmuanya Okere•3/12/24, 9:36 PM

Currently working on the power section of my schematics design. Am using a voltage regulator of 3.3v 500mA. The total power(current) of the board at full load (when operating at full capacity) is 470mA, and the regulator has a drop out or leakage current of about 50mA.
Will it still be ok for me to use this regulator or I should change to another. But the device will not always operate at full capacity, just once in a while. Will it cause any issue on the board. @PCB & Analog @MCU, MPU & Firmware

SSatan It has got very confused datasheet and wiring. If here someone who has a few exp...

techielew•3/12/24, 9:50 PM

what specifically are you looking for help with? the interface?

CChimmuanya Okere Currently working on the power section of my schematics design. Am using a volta...

techielew•3/12/24, 9:51 PM

@ShreeshaN can probably help in a few hours

VVizsla Geek I've been chatting with Brandon... I knew him in his old OSM days. We've been ta...

aymen ammari•3/12/24, 10:15 PM

Welcome to the server vizsla

SSaßì @Obamator Welcome! Can you let us know a bit about your technical background, w...

Obamator•3/12/24, 10:16 PM

Hi, my name is Marvin. My hobby is programming and some other tech-related stuff

I am not a pro, but I know some things in some areas. I joined this server to help people if I can and ask questions if I need help.

CChimmuanya Okere Currently working on the power section of my schematics design. Am using a volta...

aymen ammari•3/12/24, 10:21 PM

For butter results and the regulator won't heat up you have to add at least 25-30% that means you're consuming 450mA you should use 563mA - 585mA more is better , also it is recommended to use a heat sync with some thermal paste on it, because the heat effects regulator by time

OObamator Hi, my name is Marvin. My hobby is programming and some other tech-related stuff...

aymen ammari•3/12/24, 10:27 PM

You're welcome Marvin, always remember that we are here to help each other, don't hesitate or be shy from asking, even little questions

Ttechielew what specifically are you looking for help with? the interface?

SatanOP•3/12/24, 10:29 PM

Hi, I have problem about bad voltage coming from the sensor.. If i convert it to ppm I will get 400 ppm CO, that´s not possible. Do you want to see my diagram?

Camila_99$$•3/12/24, 10:37 PM

Hum it sounds like there could be a hiccup with your sensor. Have you tried double-checking its calibration and connections?

CCamila_99$$Hi guys has anyone used FreeRTOS and encountered the problem that when i call th...

nour_oud•3/12/24, 10:54 PM

I think this article will be helpful for that issue https://www.freertos.org/Debugging-Hard-Faults-On-Cortex-M-Microcontrollers.html

FreeRTOS

Debugging and diagnosing hard faults on ARM Cortex-M CPUs

Debugging hard fault exceptions on ARM Cortex-M3 and ARM Cortex-M4 microcontrollers

CCamila_99$$Hum it sounds like there could be a hiccup with your sensor. Have you tried doub...

SatanOP•3/12/24, 10:59 PM

SatanOP•3/12/24, 11:00 PM

I think problem will be with resistors (560k,470k and 10k)

Ben•3/12/24, 11:16 PM

Hi all, I'm currently working on a computer vision project. I've written code to measure distance using a single camera, but it's not performing well. I need some assistance in adjusting some parameters. Can anyone help me with this?

vyomagami•3/13/24, 1:41 AM

Hi all, can anyone suggest me autofocus camera module with USB protocol

SSatan Click to see attachment

techielew•3/13/24, 2:51 AM

Another one @ShreeshaN, @Umesh Lokhande or @Aditya thakekar may be able to assist with

SSatan Click to see attachment

Aditya thakekar•3/13/24, 2:53 AM

Which sensor

Aditya thakekar•3/13/24, 2:56 AM

If the data sheet of the sensor you shared is what you are using

Vvyomagami Hi all, can anyone suggest me autofocus camera module with USB protocol

techielew•3/13/24, 2:56 AM

What's the use case? And what stage of development are you in? If you're looking for a USB-based eval module, you could check out Arducam: https://www.arducam.com/?s=usb&id=98994. They have a decent selection of affordable evks. If you are looking for something more professional it may be good to look into a higher end camera and combine it with a carrier. Connect Tech Inc creates such carriers and they have partnerships with commercial-grade camera manufacturers. lmk which direction you're thinking.

Arducam

You searched for usb - Arducam

Aditya thakekar•3/13/24, 2:56 AM

They have clearly mentioned all resistor values. Plus it is 3 in one.

BBen Hi all, I'm currently working on a computer vision project. I've written code to...

techielew•3/13/24, 2:58 AM

Someone who has been working on a lot of this type of stuff is @Yash Naidu but he's been busy for a while. Let me see if I can get him to jump in for a bit.

What parameters specifically are you looking to adjust?

CChimmuanya Okere Currently working on the power section of my schematics design. Am using a volta...

ShreeshaN•3/13/24, 2:59 AM

Its better to go with regulator of higher capacity about 1A. If you have some inductive load then current consumption could be high at startup and this could bring supply voltage down, causing digital circuit to reset or go to error states, so better to go with regulator of 2 to 3 times of peak current

Ttechielew Someone who has been working on a lot of this type of stuff is @Yash Naidu but h...

Ben•3/13/24, 3:57 AM

@techielew The range of blue color in HSV, or I just need to change the method of detecting the circle. Also, I want to estimate the position of x and y using optical flow

Ben•3/13/24, 3:57 AM

I actually haven't started with Optical flow

Saßì•3/13/24, 4:05 AM

@Vizsla Geek 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?!

Saßì•3/13/24, 4:05 AM

@vyomagami 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?!

Saßì•3/13/24, 4:06 AM

@Sklr 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 Nice! Are there any specific issues you encountered or could use help on? We're ...

shardul17•3/13/24, 4:17 AM

Can you focus on how watchdog is being used?
What are default parameters? How to configure? How ti works? How to customise it? And so on....

shardul17•3/13/24, 4:18 AM

Sorry for the delay

Ttechielew What's the use case? And what stage of development are you in? If you're looking...

vyomagami•3/13/24, 4:57 AM

Last tim i bought this

12MP IMX708 USB UVC Fixed-Focus Camera Module 3

but it hasn't met my requirements, Autofocus is necessary for me.

gKarthikSai•3/13/24, 5:03 AM

Hey all.....i wanted to advance my skills in VERILOG language and FPGA's, any roadmap that you can provide me on where to start and how to proceed will be really helpful.

gKarthikSai•3/13/24, 5:04 AM

any courses, books, utube vids, websites or anything can help

Camila_99$$•3/13/24, 5:28 AM

Hi @gKarthikSai I hope these books will help you:
Programming FPGAs: Getting Started with Verilog” by Simon Monk
FPGA Prototyping with VHDL Examples” by Pong P. Chu

Sshardul17 Can you focus on how watchdog is being used? What are default parameters? How to...

techielew•3/13/24, 6:04 AM

This is a good one. What do you say, @Umesh Lokhande. Can we work this into the EH schedule at some point?

GgKarthikSai Hey all.....i wanted to advance my skills in VERILOG language and FPGA's, any ro...

techielew•3/13/24, 6:06 AM

Hi gKarthik good to hear from you. @Navadeep might be able to recount some of his experience to set you on a path but @JohnBudweiser and I had a conversation about this a while ago and he suggested getting started with ModelSim. Then Navadeep jumped in with a free web version: https://www.makerchip.com/.

techielew•3/13/24, 6:07 AM

Combine this with some foundational reading and QA with the experts here and I think you have a good set of tools to get started. But please let us know if you have specific questions.

Vvyomagami Last tim i bought this 12MP IMX708 USB UVC Fixed-Focus Camera Module 3 but it...

techielew•3/13/24, 6:09 AM

w/o knowing much of your requirements or use case... https://www.arducam.com/product/arducam-16mp-autofocus-camera-for-laptop-1-2-8-cmos-imx298-mini-uvc-usb2-0-4k-video-webcam-without-microphone-with-3-3ft-1m-cable-b0290/

oops that was the enclosure one. Updated with the module.

Arducam

Arducam 16MP Autofocus USB Camera for Computer with Microphone, 1/2...

Arducam 16MP Wide Angle USB Camera for Laptop, 1/2.8" CMOS IMX298 Mini UVC

Ttechielew w/o knowing much of your requirements or use case... https://www.arducam.com/pro...

vyomagami•3/13/24, 6:14 AM

Is there any camera module to detect font in Books

CCamila_99$$Hi @gKarthikSai I hope these books will help you: Programming FPGAs: Getting Sta...

gKarthikSai•3/13/24, 7:29 AM

Thankyou

Ttechielew Hi gKarthik good to hear from you. @Navadeep might be able to recount some of hi...

gKarthikSai•3/13/24, 7:30 AM

Sure....thanks

honest_starfish_36393•3/13/24, 7:35 AM

Screenshot_2024-03-13_at_12.46.29_PM.png

Screenshot_2024-03-13_at_12.43.25_PM.png

honest_starfish_36393•3/13/24, 7:35 AM

An MPU6050 from Digikey for $8 (about 640 Rs). But when I got the breakout board for it from Robu, it only cost me $1.4 (around 113 Rs). Why is there such a big difference in price?

Usually, surface-mount components like the MPU6050 are cheaper. So it's surprising that it's more expensive on Digikey.

AAditya thakekar Which sensor

SatanOP•3/13/24, 8:17 AM

It is MICS -6814

AAditya thakekar If the data sheet of the sensor you shared is what you are using

SatanOP•3/13/24, 8:18 AM

Yes

CChimmuanya Okere Currently working on the power section of my schematics design. Am using a volta...

Joseph Ogbonna•3/13/24, 9:12 AM

It depends on how long the device will be on at full capacity. Literally I will say you should get another regulator of 1A, which will cover all your power requirements so that there won't be a power flunctuation in your board.

youcef_ali•3/13/24, 11:32 AM

Hi, I'm looking for a better/fast way to dump the memory in Zynq Soc CLI or script without GUI

Yyoucef_ali Hi, I'm looking for a better/fast way to dump the memory in Zynq Soc CLI or scri...

boualleg sabrina•3/13/24, 12:05 PM

try to use vitis SDK script

CCamila_99$$Hi @gKarthikSai I hope these books will help you: Programming FPGAs: Getting Sta...

Navadeep•3/13/24, 12:07 PM

To add on, my personal favourite is https://z-lib.io/book/17737154
From a very basic A for Apple level - me as an ultra novice to this, found it graspy.

CCamila_99$$Hi @gKarthikSai I hope these books will help you: Programming FPGAs: Getting Sta...

boualleg sabrina•3/13/24, 12:09 PM

thank you

Hello! Is here anybody familiar with sensor MICS-6814? That´s sensor for CO,NO2 and NH3.

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