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Newbie with the ESP32 ecosystem here; REALLY appreciate all the hard work you're doing, putting this info together and sharing

This video is the GO-TO guide for ESP32-S3 barebone! Thank you, sir!

3:53 THANK YOU! Just a few nights ago I was utterly baffled why my S3 board was crashing when using GPIO 35,36,and 37 for SPI or I2C when simply trying to test a couple of OLED displays. It was the first time I'd used a newer S3 so I thought it might be a configuration fault of PlatformIO or the tft_eSPI library but this explains it!

This is exactly what I was looking for, thanls!

Great initiative! I've been developing a few PCB's now with the ESP32-S3 and works all pretty well. only had some problems with using the ADC and Touch pins while using WIFI (same conflicts as with normal ESP32). your doc is very helpfull (love the high-res PDF, thanks).

Excellent video!

Nice summary!

I've designed a couple of custom PCB's lately using this module, it is my first time using the ESP32 series and I decided to jump directly into the S3 beacuse of its integrated USB (previously used atmega328, atmega 2560 and recently ESP12F). It is the first time a complex PCB I design works ALMOST perfectly fine at the first try. I'm not sure If I am getting finally good at it, if it was just a cse of pure luck or If the ESP makes it so easy. Whatever the case, pretty happy to have finally decided to give it a go, I feel like I've just added a VERY powerul tool to my toolset!!

Fantastic resource ! :)

Def add the dfu button! If you use some of the hid modes, it breaks the non dfu flash modes

Got it, none of the pins can be used. Thanks for the info.

Good idea! I would love to have and help with good S3 docs. Starred and watching. I'll take the weekend to see if and what I can contribute. Is there also a place for some discussion?

Than you for the great video! I was wondering about pin 29 the VDD_SPI. I currently have it set to +3.3V but I have seen some boards that don't have it connected to anything and some that have 2 decoupling capacitors and just label it VDD_SPI. So maybe this is an output?

what would be good to add would be any refences to the datasheets. so we can go and look for work rounds or check the validity of the information.

Nice work bro. I have been having an issue to find Schematic( pinout ) to connect ESP32-S3 Wroom to MAX6675 Amplifier with K-type thermocouple. I find Schematic for ESP32 with K-type thermocouple and MAX6675 Amplifier is NOT working for ESP32-S3 Wroom. Do you have any information on this ? please let me know. Thank you for sharing your knowledge and expertise with us.

1:33 So is it recommended that we still include this auto reset circuit in our PCB designs?

I won't add a link here as UKposts will remove my post for it. But if you look for ESPEasy ReadThe Docs, you can see a list I put together of all strapping pins for all ESP chips. Also you mentioned GPIO-0 is used for the boot/flash pin, but that's only for the ESP32-classic and the "S" versions (S2/S3). The C2, C3, C6 and H2 have a different pin. And the "default UART" pins are only "default" if you don't want to set the pins you like to the UART ports as you really can set almost any pin to be used for UART. Also keep in mind that on the S3 you can use all 3 HW UART ports and still have some console/flash option via USB. So that makes the S3 one of the most flexible ones. Too bad there doesn't seem to be a way to detect at runtime what kind of flash and PSRAM you have. So if you have OPI connected PSRAM and your board-definition states you only expect quad IO (QIO/Qout) for PSRAM, it will simply not be found. And if you set it to OPI (octal) connected PSRAM and you only have quad-connected PSRAM, you will end up in a bootloop. Espressif really made a mess of the SPI access on the S3.

I was just having this problem earlier! I was trying to find the random nerd tutorials s3 page but it doesn't exist ;(

how to use jtag pins as gpio in arduino

I'm in. I ordered 2x esp32-s3 32n8r modules from 2 different AliSlow suppliers to mess around. I have to learn how to use Git in VS code. Maybe you can make a quick video and teach us how its done? As it is, I am using Google drive to keep my source code safe. I'm stupid, what can I say?

such a bummer that the marvell/ nxp 88mw320 series is not more widely available. so much better of a platform than the esp32.

Thanks this is handy but what does it have to do with "Why did these LEDs light up?" in the title? Sorry if I'm being stupid.

I have been having an issue with running the standard WiFI code on the ESP32 S3. It keeps resetting the moment it gets connectd to the Wifi, otherwise it works fine. If anyone has any solution to this, please do let me know. Thanks

Imagine putting an ESP32 up against an IBM PC AT? Even the wimpy ULP processor inside the ESP32, beats the 80286 so hard, it will cry and crash...

all pins are safe to use if you don't put the power on. 🙂

Too many waste of GPIO 😢