![esp32 - Why the unusually high "LOW" voltage when pressing NodeMCU ESP-32s boot button? - Electrical Engineering Stack Exchange esp32 - Why the unusually high "LOW" voltage when pressing NodeMCU ESP-32s boot button? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/okXT4.jpg)
esp32 - Why the unusually high "LOW" voltage when pressing NodeMCU ESP-32s boot button? - Electrical Engineering Stack Exchange
![ESP32-S3: Strapping pins undocumented pull-up resistors (IDFGH-8243) · Issue #9731 · espressif/esp-idf · GitHub ESP32-S3: Strapping pins undocumented pull-up resistors (IDFGH-8243) · Issue #9731 · espressif/esp-idf · GitHub](https://user-images.githubusercontent.com/32066446/188652928-57bd8a44-7603-4664-bb45-403ade4d3d2b.png)
ESP32-S3: Strapping pins undocumented pull-up resistors (IDFGH-8243) · Issue #9731 · espressif/esp-idf · GitHub
![I think I use all usable GPIO pins. GPIO 0 is strapping pin. GPIO 34 & 35 are input only. I need to remove GPIO 2 temporary during firmware upload but it I think I use all usable GPIO pins. GPIO 0 is strapping pin. GPIO 34 & 35 are input only. I need to remove GPIO 2 temporary during firmware upload but it](https://i.redd.it/t6scdfip00m71.jpg)
I think I use all usable GPIO pins. GPIO 0 is strapping pin. GPIO 34 & 35 are input only. I need to remove GPIO 2 temporary during firmware upload but it
![DOIT ESP32 DevKit V1 Wi-Fi Development Board - Pinout Diagram & Arduino Reference - CIRCUITSTATE Electronics DOIT ESP32 DevKit V1 Wi-Fi Development Board - Pinout Diagram & Arduino Reference - CIRCUITSTATE Electronics](https://circuitstate.com/wp-content/uploads/2022/12/DOIT-ESP32-DevKit-V1-Pinout-Diagram-and-Reference-CIRCUITSTATE-Electronics-Featured-Image-01-2.jpg)