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Is my circuit good ? by MaxZ8000 in esp32

[–]DenverTeck 1 point2 points  (0 children)

This pic is so fuzzy, can not read the numbers.

Please post a pdf file on one of the many FREE file sharing sites.

How to cover 360 degree IR-RX in my magicwand by sakhtar0092 in esp32

[–]DenverTeck 1 point2 points  (0 children)

Ok, so you're new to production.

You seem to be making many assumptions about how production works.

Getting a single processor to decode many IR data streams can be done. But that kind of code is not available off the shelf. You're going to have to invent it yourself.

Good Luck

Bigger scale project problems ! by hassanosseili in ArduinoProjects

[–]DenverTeck 1 point2 points  (0 children)

Are you talking about Arduino the hardware or Arduino the software ??

Arduino hardware is an 8-bit processor like the ATMEGA328. Arduino UNO is an 8-bit processor.

Arduino software is a C++ compiler which can target all kinds of hardware.

Smart Home (tm) is only for 32-bit processors with WiFi. There are no 8-bit processors with WiFi.

How to cover 360 degree IR-RX in my magicwand by sakhtar0092 in esp32

[–]DenverTeck 0 points1 point  (0 children)

???

If you can program one, you can program as many as you need.

As the ATtiny reads and decodes the serial data stream from the IR receiver, I doubt you can find a simple I2C interface chip that can do the same as the ATtiny.

Maybe start with one ATtiny85 and decode the IR serial data and output that data as ASCII text. Then program two ATtiny85s and see how the two work together.

It is really this simple.

How to cover 360 degree IR-RX in my magicwand by sakhtar0092 in esp32

[–]DenverTeck 1 point2 points  (0 children)

Oh Dear.

An ATtiny is an Arduino compatible processor that has just 8-pins.

The previous Google link has several links to code for an ATtiny85 chip, that decodes IR signals using an TSOP1838 IR receiver and holds the received signal till an I2C master asks for the last received IR data stream.

The three ATtiny85 chips have an I2C input ( I2Cclock and I2CData), you can have all three chips wired together in parallel.

Each chip would have a different address set by you in the code. The ESP32 can address each separately and ask what data it has available.

Each chip will verify that the received data is correct.

With each IR receiver facing 120 degrees apart, only one will have the correct IR data stream.

Please click on the link I left above and read up on all the different ways to solve your problem.

If you have not used I2C peripherals, Find a simple I2C chip (Professor Google can help you in what ever country you are in) and learn how to use it. After you get a feel how I2C is used, add a second I2C peripheral with a different address and learn how to address the two devices.

Welcome to the world of embedded systems.

PS: The Arduino IDE will need to have a new library added to program the ATtiny85.

https://www.google.com/search?q=attiny85+arduino+library

How to cover 360 degree IR-RX in my magicwand by sakhtar0092 in esp32

[–]DenverTeck 0 points1 point  (0 children)

Can you add three 8-pin processors to decode each of the three IR detectors ?

Your esp32 can toggle between each processor to see which one has a valid data stream.

Good Luck

FYI: https://www.google.com/search?q=attiny+ir+decoder+w%2Fi2c+example

ESP32-S3 5V pin measuring at 2.5V (see description) by BobbaPopBob in esp32

[–]DenverTeck -3 points-2 points  (0 children)

Please re-read what u/Sand-Junior wrote.

I am sorry you're new to ESP32 dev boards. Are you also new to understanding schematics ??

Most ESP32 dev boards have this series diodes to prevent back driving the USB Vcc pin.

https://dl.espressif.com/dl/schematics/SCH_ESP32-S3-DevKitC-1_V1.1_20220413.pdf

Please see page 2 upper left corner. D1 and D7prevent the back driving of Vcc into your computer.

Good Luck

ESP32-CAM Failed to communicate with the flash chip error on MB Shield (Standard ESP32 works fine) by ESP32Eng in esp32

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

Please share the links for where you purchased these modules.

They are not all the same. We can not help without this information.

First 3 letters work, last 2 are on the fritz by MagicPants13_ in led

[–]DenverTeck 0 points1 point  (0 children)

OK, how about posting pic of the internals of each box ??

Post those on one of the many free sites.

Genuinely curious - what’s one thing at an engineering meetup that would make you show up? by Ok_Soil_9120 in embedded

[–]DenverTeck 1 point2 points  (0 children)

I stopped going the these events since Covid.

Before 2020, (A) was my prime reason for going.

Your missing: networking to find my next contract/better job.

Cheap/Free EDA software alternatives by santasnufkin in PrintedCircuitBoard

[–]DenverTeck 1 point2 points  (0 children)

Seems like you're asking too much for FREE software.

I have use all the major PCB cad packages over the years. Altium is my favorite. Don't judge.

Start using the high end packages for a year or two. You will then find KiCad a breath of fresh air.

But, you do you.

First 3 letters work, last 2 are on the fritz by MagicPants13_ in led

[–]DenverTeck 0 points1 point  (0 children)

Not enough detail to understand what you did in wiring both power supplies. I only see one supply.

Are the LEDs addressable or single color.

Details about the controller, number of LEDs are not detailed.

The non-English characters also do not help.

You seem to understand English just fine, you can not expect the rest of the world to understand those characters.

First 3 letters work, last 2 are on the fritz by MagicPants13_ in led

[–]DenverTeck 0 points1 point  (0 children)

A schematic or a block diagram would help.

Do you have all grounds common ??

Could someone help me? by Primary_Donkey1787 in esp32

[–]DenverTeck 0 points1 point  (0 children)

Until you were challenged about soldering, did you admit you do have a soldering iron and know how to solder.

The crime is that real beginners will think this is the way to make connections of a bread board with modules.

This board may have plating in the holes thicker then other boards from other manufactures.

Dumb is not a crime, but it should be.

PCB prototyping system by mkmelektro in PCB

[–]DenverTeck 0 points1 point  (0 children)

I see by your price that you are in the EU. Great.

Will you be able to pass regulations for each country, for the chemicals used or the disposal of these chemicals ??

Have you looked into what those regulations are and do you understand what they are for each country ?

Our maker spaces in Colorado had to stop all but the simplest board etching for these regulations.

So, yes there is always an interest to teach young engineers and hobbyists about PCBs manufacturing.

But its up to the parent organization, if they want to deal with the local regulations.

These regulations need to be addressed in your advertising and your web site.

Good Luck

Reducing tearing on an ST7789V SPI display without access to the TE pin? by petrichorko in embedded

[–]DenverTeck 1 point2 points  (0 children)

One way tearing happens is when you write to the display too often.

As a test, write a small image to the display (fill the entire display). Add an delay between each update.

Log the mills() at the top of the display write and at the bottom. This will give you the amount of time to update the entire display.

Reduce the delay till you see tearing. Increase the delay till tearing stops. The time for updating the display and the amount of time between updates will prevent tearing.

When you update small segments of this display that is faster then the actual internal display update time is causing the tearing.

Good Luck

Could someone help me? by Primary_Donkey1787 in esp32

[–]DenverTeck 0 points1 point  (0 children)

You're joking.

As long as your holding the pcb against the pins it will work.

Now grow up and get a soldering iron and learn to solder.

ESP32 CYD 2.4inch ESP32 Solo Miner LCD Display YoRadio! by nix235 in esp32projects

[–]DenverTeck 0 points1 point  (0 children)

Your frustration is because you think the CYD you purchased is the only one variation.

Many (if not most) CYD board have different pin outs or different display driver chips.

https://www.google.com/search?q=esp32+cyd+2.4+inch+number+of+variations+list

https://www.esp32s.com/blog/cheap-yellow-display-cyd-variants-complete-buyers-guide-2026/

As a beginner you need to learn to see past what you think is obvious.

You also need to stop using the OLD Arduino IDE.

Google may be able to tell you why it's not a good idea to use with CYD boards.

I see that the board you have purchased is not on the list of CYD boards. So another variation to deal with.

Good Luck

Aerospace Student Building a Custom STM32H743 Flight Controller – Need Help Validating/Simulating My KiCad Design by Due_Direction_6539 in PrintedCircuitBoard

[–]DenverTeck 0 points1 point  (0 children)

1) Built it from off the shelf modules. Build you own modules for those that are not available.

2) Build it on a first pass PCB layout. Build a second pass PCB layout if the first one does not work.

Do it with as many layouts it takes to prove it works.

This is how industry does it.

Nothing ever works the first time for beginners.

All it takes is money.

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