Search found 4 matches

by PepitoGrillo
Thu Mar 06, 2025 5:15 pm
Forum: Hardware
Topic: ESP32 is not detected when uploading code
Replies: 0
Views: 173

ESP32 is not detected when uploading code

Hello! I have designed a custom board using an ESP32-S3. It's the first one that I've designed with an external flash, all the other standalone-chips I've used had an internal flash. Problem is that when I try to upload an script, I get the following error: esptool.py v4.6 Serial port COM5 Connectin...
by PepitoGrillo
Tue Jan 28, 2025 4:41 pm
Forum: ESP32 Arduino
Topic: Guru Meditation Error in an empty ESP32-S3 Code
Replies: 4
Views: 3228

Re: Guru Meditation Error in an empty ESP32-S3 Code

Thanks for your reply! As far as I could check, power supply seems Ok. Don't have an oscilloscope to check, but multimeter is not detecting any voltage drop when I try to upload the script. Voltage remains the same at 3,35V. Also tried to power the PCB with an external power supply. Using a big powe...
by PepitoGrillo
Mon Jan 27, 2025 9:58 am
Forum: ESP32 Arduino
Topic: Guru Meditation Error in an empty ESP32-S3 Code
Replies: 4
Views: 3228

Guru Meditation Error in an empty ESP32-S3 Code

Hello, I am trying to upload a code to an ESP32-S3, placed in a custom board. Problem is that I can't upload ANY code (even if it is only a BareMinimum example). If I try uploading the code, I get the following errors (they keep changing from one to another): A fatal error occurred: Guru Meditation ...
by PepitoGrillo
Thu Jul 25, 2024 8:54 pm
Forum: Hardware
Topic: Unable to upload code to custom ESP32
Replies: 0
Views: 1009

Unable to upload code to custom ESP32

I have made a custom-made PCB, using an ESP32 as its main brain. I have copied nearly all the schematics refearing to the USB-UART converter from this board: https://docs.espressif.com/projects/esp-idf/en/stable/esp32/hw-reference/esp32/get-started-devkitc.html When I try to upload some dummy code u...