Ok so I digged even deeper: There seem to be a difference between the CP2012 QFN24 and QFN28 package: The QFN24 Version has a seperate VIO AND VDD pin the QFN28 does not have a VIO pin. On the Schematics for the devkit (with the QFN28) therefore the RSTB pin pullup resistor is connected to VDD (like...

Hello I am having the exact same problem does anybody found a solution for this (except leaving out the one cap)?

So it looks like I have the same problem mentioned here: https://esp32.com/viewtopic.php?f=12&t=20138 The ESP32 only starts when I desolder the 0,1uF condensator parallel to the boot button (named C3 in my schematics)? I uploaded a part of my pcb schematics as a picture is there anything I did wrong...

Hello folks, I am currently building a custom board for an ESP32 WROOM-E based on the devkit schematics, everything was working and fine I thought I am nearly finished... Then the chip for the USB/UART Bridge the CP2102 QFN28 was out of stock and I had to do a new revision with CP2102 QFN24 (which I...

Hello folks, I am currently using an ESP32 Devkit (the newest one with a WROOM-E) and a RC522 RFID module. When I am reading out a chipcard with the RFID module and doing a http reuqest at the same time the ESP32 seems to crash. I only get messages like "Guru Meditation" or "Guru Meditation E" and t...

Does nobody has an idea? The power spike occours when I read out a RFID Card with the RC522 RFID Modul an then immediately make an http request afterwards. The problem also occours when I use the newest version auf the ESP32 Devkit with a ESP32WROOM-E so its not just my PCB design. I also tried to c...

Hello, I am currently developing a PCB with a ESP32 WROOM-E, I used the Devkit Schematics I found here: https://dl.espressif.com/dl/schematics/esp32_devkitc_v4-sch.pdf I am currently using this voltage regulator: https://www.mouser.de/ProductDetail/Texas-Instruments/LMS8117AMP-33-NOPB?qs=7lkVKPoqpbZ...

Hello, I have an other question:
What does the NC stand for on the 10K(5%)(NC) Resistor used in the UART / USB Bridge?

Thats exactly why I was asking for help you are completly right. I didnt see they flipped RX and TX in the DEVKIT Schematices thank you very much. https://www.mouser.de/ProductDetail/Comchip-Technology/CPDUC5V0R-HF?qs=3gH8J%2F4PzR9qrxpBeFVHVA== Should this ESD protection Diode work too or do I have ...

Hello I'm trying to design a custom PCB with an ESP32WROOM-E and im pretty new into PCB development. I tried to use an ESP32 Devkit and it worked fine so I tried to copy the Schematics found here into KICAD. https://dl.espressif.com/dl/schematics/esp32_devkitc_v4-sch.pdf For my project I want to con...