Search found 25 matches

by Chevelle
Sat Mar 15, 2025 12:48 am
Forum: General Discussion
Topic: ESP32-S3 USB COM Port disappearing
Replies: 8
Views: 94802

Re: ESP32-S3 USB COM Port disappearing

Those components have shown up in the literature for sort of best practices. I agree though, probably not necessary. I have tried it without them and the same thing happens.

As I have been doing this more and more, I have been able to resurrect the other boards in the set. When I first power it up ...
by Chevelle
Fri Mar 14, 2025 5:47 pm
Forum: General Discussion
Topic: ESP32-S3 USB COM Port disappearing
Replies: 8
Views: 94802

Re: ESP32-S3 USB COM Port disappearing

Here is a schematic. The bits in the yellow are not populated. As you can see, there is hardly anything there.

I built up another one this morning. I came up just fine. I programmed it with a test routine to write to the LittleFS area. As I was about to load the actual program, Windows dropped the ...
by Chevelle
Thu Mar 13, 2025 5:03 pm
Forum: General Discussion
Topic: ESP32-S3 USB COM Port disappearing
Replies: 8
Views: 94802

Re: ESP32-S3 USB COM Port disappearing

This problem is getting more and more serious.

As I said before, there are two boards in the system. They talk to each other over a serial connection. Both boards use the USB CDC method to be programmed (GPIO19, 20). I have been trying to build out more of these boards but to no avail. I have been ...
by Chevelle
Wed Mar 12, 2025 5:52 pm
Forum: General Discussion
Topic: ESP32-S3 USB COM Port disappearing
Replies: 8
Views: 94802

Re: ESP32-S3 USB COM Port disappearing

This is getting even stranger. I let the latest board just sit. Maybe an hour. I then held the EN and BOOT buttons down while applying the USB connection. The board came up in boot mode! I quickly programmed the board and I thought all was well. I then saw the post about changing the pullups and so ...
by Chevelle
Wed Mar 12, 2025 5:11 pm
Forum: General Discussion
Topic: ESP32-S3 USB COM Port disappearing
Replies: 8
Views: 94802

ESP32-S3 USB COM Port disappearing

Yes, I know. There have been several posts about this in the past. I believe that I have read them all but the problem still persists.

I have built about 12 PCBs with the ESP32-S3-WROOM device. They are rather simple. They have a USB connector, mostly for programming over GPIO19 and GPIO20s . It ...
by Chevelle
Sat Nov 23, 2024 1:41 pm
Forum: Hardware
Topic: Adding Memory for Image Storage
Replies: 1
Views: 1122

Adding Memory for Image Storage

I have an application where I need to store images. The more memory, the more images that can be stored. Adding memory is not the issue. That seems pretty straight forward but as I understand it, memory cannot be added and set aside for LIttleFS or other file management system. So the question is ...
by Chevelle
Fri Aug 30, 2024 12:54 pm
Forum: ESP32 Arduino
Topic: ESP32-S3 USB Port uploads but serial comms are not working.
Replies: 6
Views: 18836

ESP32-S3 USB Port uploads but serial comms are not working.

Hi. Below is a test program I am using for a project that uses am ESP32-S3 device. I am using the USB-to-Serial internal support (pins 19 & 20) for both uploading the code as well as serial communications when the application is running. Oddly, the code uploads fine. The odd thing is that I cannot ...
by Chevelle
Mon Jan 29, 2024 8:42 pm
Forum: ESP-IDF
Topic: I2S Audio Crackling / Pops
Replies: 4
Views: 12015

Re: I2S Audio Crackling / Pops

I am not sure what causes the pop at the beginning of a play but I do know that if the library supports the use of the SD line, that can be mitigated.

The crackling is most likely cause by ringing on the LRC, BCLK, and/or the DIN lines. Just add small resistors in each of those lines and that ...
by Chevelle
Sun Jun 19, 2022 10:26 am
Forum: Hardware
Topic: Using the ESP32-C3 SOC, Not Module
Replies: 2
Views: 2644

Re: Using the ESP32-C3 SOC, Not Module

Perfect. Thanks very much.
by Chevelle
Sat Jun 18, 2022 11:30 am
Forum: Hardware
Topic: Using the ESP32-C3 SOC, Not Module
Replies: 2
Views: 2644

Using the ESP32-C3 SOC, Not Module

I am a big fan the the ESP32 product line. I have plenty of experience starting with the development kits through various modules. I have a new project that does not need the BLE or WiFi functions and I was thinking of using the ESP32-C3 SOC. I haven't found any resourse material other than the IC ...

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