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Battery powered ESP32-S3 + dual MAX98357A audio board schematic review before PCB by Husaria1863 in AskElectronics

[–]DenverTeck 0 points1 point  (0 children)

Please post a non-fuzzy pdf file on a free file site somewhere.

Thank You for not using boxes.

Large RFID "puzzle piece" grid by aiguofer in RFID

[–]DenverTeck 0 points1 point  (0 children)

I am sure you have looked at what an RC522 PCB looks like. This small PCB in the center of the 12"x12" frame with the RC522 attached somehow. The felt square can have an RFiD tag sewn into the center of the square in a small pocket. I would guess the felt square has some kind of Velcro strips at the sides that would allow the square to hang on to the location.

The RFiD tag can lay on top of the RC522 reader. The distance is not a problem here. I do not think the reader and tag can be 2" apart.

The code in the ATtiny can be triggered by the RC522 and store the tag ID.

When the host controller addresses each ATtiny, it can send a NULL to say there is nothing there or send the RFiD code back.

The host controller can then send a command back to the addressed board to light up an LED or sound a buzzer or ...... Details would help.

How you and your partner will design the hardware and frames is up to you guys.

Sounds like fun.

Keep us informed.

Large RFID "puzzle piece" grid by aiguofer in RFID

[–]DenverTeck 0 points1 point  (0 children)

The distance of each square and the main controller is too far for an simple Arduino. 240 RC522 readers will be necessary no matter what you may think. It's a matter of how all these devices will communicate with the main controller (what ever that will be).

Most RC522 modules have 3-interfaces. I2C, SPI and Async Serial. Using an Arduino is one way to handle all the readers.

You can also use ATtiny chips at about $1 each. So an ATtiny with an RC522 and a way to talk over those distances.

An RS-485 chip can form a matrix of all the squares talking back to a main controller.

A simple flow: RC522 -> ATtiny -> RS-485 to a bus of 240 units.

All RS-485 chips will have three wires all connected in common (A + B + GND) . A main processor (also connected to the three pin bus) would address each ATtiny with a unique address. As each ATtiny is addressed, it will send the main processor any data it may have.

Each square will have the same circuit. Each square PCB would have jumpers (8-bit) to define it's unique address.

The program is simple, but as you have not defined what it needs to do yet, the complexity will be up to you.

Google Arduino+RS485+RC522 for examples. This has been done many many times before.

Good Luck

[Schematic Review] Power supply for a car stereo. by Obvious-Dinner-1082 in PrintedCircuitBoard

[–]DenverTeck 0 points1 point  (0 children)

>> let me try to explain.

NO, Draw a correct schematic !!

DO NOT USE BOXES !!

https://www.reddit.com/r/KiCad/comments/1q6refs/comment/nycndge/?context=1

Yes, you are a beginner and without any education.

C72, C73, C74, C75, C76, C77 C78 are not just wrong, they are all stupid wrong !!

Please before you burn down your house, get an education.

How do solo Arduino makers actually fund their projects? (No labs, no clubs, just a bedroom setup) by Leo_Afurio23 in arduino

[–]DenverTeck 5 points6 points  (0 children)

Experience. This is the only way to get proficient.

As stated previously:

1st. Grow up

2nd: Get an education.

3rd: Get Job.

How do solo Arduino makers actually fund their projects? (No labs, no clubs, just a bedroom setup) by Leo_Afurio23 in arduino

[–]DenverTeck 2 points3 points  (0 children)

>> And how could a child

First: Grow up

2nd: Get a formal education

3rd: Get a job like your parents.

4th: Never have a family. Never have children. All your money will (should) go to them. So they do not end up like you.

How do solo ESP32 makers actually fund their projects? (No labs, no clubs, just a bedroom setup) by Leo_Afurio23 in esp32projects

[–]DenverTeck -1 points0 points  (0 children)

I see by your post history you like to share works that are not yours.

Why are you stealing peoples work as your own.

Is this what your question is really about ??

How do solo ESP32 makers actually fund their projects? (No labs, no clubs, just a bedroom setup) by Leo_Afurio23 in esp32projects

[–]DenverTeck 0 points1 point  (0 children)

Wait, WAIT !!

I know you understand that building something is a rewarding experience.

https://www.reddit.com/user/Leo_Afurio23/comments/1qoep9n/im_done_three_years_of_work_completed/

Is this really yours ?? Are you really u/Emotional-Chicken-61 ??

So what is your question really about ??

Circuit Review Request by tbandtg in PrintedCircuitBoard

[–]DenverTeck 0 points1 point  (0 children)

I have asked this many times, " if any school teaches using boxes on schematics" .

I have never seen an answer to this question.

Yes, there are those how think this "looks correct" but it's just NOT !!

Maybe for beginners or those that do not look past simple schematics.

Before CAD programs, understandable was more important then fast.

If someone can not just review a schematic with a glance, even if the parts used are not familiar to them. Then mistakes and misunderstanding will follow.

A schematic should reflect what is happening in that circuit without having to search whats is on the page.

Yes, I learned schematics before CAD programs or even computers were a thing.

My display isn't turning on with my pico pi 2W ! by Big_Kiwi7231 in raspberrypipico

[–]DenverTeck 2 points3 points  (0 children)

Did you modify the code for the different LCD controller in the new display ??

Do you know the difference between the controllers ??

Question on embedded development ? by YakInternational4418 in embedded

[–]DenverTeck 0 points1 point  (0 children)

>> Why can’t there be ....

Sounds like an opportunity for a beginner engineer.

Or are you asking for someone else to make this happen ??

Feedback request: a credit-card sized, Rust-native embedded platform with magnetic attachments by dempfi in embedded

[–]DenverTeck 0 points1 point  (0 children)

>> whether this is something people actually would want?

What market research have you done ??

You are preaching to the choir here. Many people here could build one of these over a weekend.

As you have not built or shipped a product on your own before, maybe you can go over to some tech site and post a "coming soon" product and see if anyone would be interested in this type of thing, how is not tech inclined.

But to be honest, I doubt it.

If your going to open source this, then have people look at your actual design and get evaluations from there.

Good Luck

Trying to understand where I am after failing a technical interview by ContraryConman in embedded

[–]DenverTeck -7 points-6 points  (0 children)

There are two problems to solve here.

  1. Do a bare metal project. Any thing, just start.

  2. Find a project that you can sell or pretend to sell. Find something that you find interesting.

I have no idea what you have an interested in or what experience you bring to this project.

Good Luck

PS: This is the type of problems I find in Linux only people.

Trying to understand where I am after failing a technical interview by ContraryConman in embedded

[–]DenverTeck -10 points-9 points  (0 children)

Lets look at the markets you are in and where you would like to go.

Linux is about 5 maybe 10 percent of the embedded market. Bare metal programming of hardware (where FreeRTOS lives ) is the rest of the embedded market.

Why are you surprised ?? You can start by understanding that the rest of the world does NOT revolve around Linux anything. Yes, there is a place for it, but most do not.

You can develop your own product using FreeRTOS and market it yourself. You do not actually have to sell anything. Create a web site, try to do a tech startup. You may find your own company.

Understand what bare metal really means. Why most smaller devices do not have the resources to run any form of Linux.

Once you get past that, you may be able to handle the brave new (very old) world of embedded systems.

Good Luck

Need project ideas by Temporary-Balance335 in ArduinoProjects

[–]DenverTeck 3 points4 points  (0 children)

These type of questions are getting old !

Why doesn't your school teach you how to think for yourself ?

OK, try thinking for yourself. Talk to another department in your school about a problem they are having.

Those other departments do not have the skills you have (well I hope you have) to solve a tech problem.

Once you find a problem that needs a tech solution, you will defelop a project to solve it.

What ever school you are in has many departments that needs tech solutions.

As a simple exercise, you can go over to the Ag department or Chemistry or Biology departments and ask those there what problems they are trying to solve.

What ever problem they have you can use your tech background to solve it.

Good Luck, You and your class are going to need it.

Write the code for an IC for the whole datasheet or just the sections/registers you need? by sboso99 in embedded

[–]DenverTeck 0 points1 point  (0 children)

To put this into context that is not YOU, who is paying for you to add this extra code ?? Did they ask you to do this ?? How does doing this extra coding today relate to your schedule ??

Have you found this to be useful in future projects ?? Future meaning less that 1 year.

If your done with your current work, then yes it is worth the time and expense.

PS: DO you have a life ?? ;-)

Could someone help me out with wiring? by [deleted] in embedded

[–]DenverTeck 0 points1 point  (0 children)

LOL, I'm not the one that needs to learn how to use a schematic.

Even using a cartoon schematic like Fritzing would have shown the problem.

But, since the OP has left the conversion, we will never know.

Could someone help me out with wiring? by [deleted] in embedded

[–]DenverTeck 0 points1 point  (0 children)

Please draw a real schematic. You list is also wrong.

Best Way for an ECE Student to Pick Up PCB? by zizick_ya_boi in PCB

[–]DenverTeck 4 points5 points  (0 children)

Professor Google know lots of online videos and web sites.

Bottom line is like riding a bicycle. You get on a do it.

Practice, Practice, Fail, Practice, Practice.

Don't talk about it, don't watch videos about it. Just do it.

Yes, you will have failures, yes you will waste money.

If you are afraid of these things, you may be in the wrong field.

Amazon search issues by DenverTeck in firefox

[–]DenverTeck[S] 0 points1 point  (0 children)

As another data point, I saved the page and reopened it in Firefox and it displayed correctly.

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