Troubleshooting

Everything tagged “Troubleshooting” across notes, resources, and Mochi logs.

An ESP32-S3 development board connected correctly to a MacBook Pro on a practical electronics workbench while preparing the first firmware upload

NotesFirmwareSeptember 2, 2026

ESP32 Beginner Guide – P2: Setup and Upload Your First Sketch

Install Arduino IDE and Arduino-ESP32, select the correct board and port, upload your first sketch, and fix Failed to connect errors on ESP32, ESP32-C3, and ESP32-S3.

ESP32 Beginner Guide Arduino IDE Arduino-ESP32 Firmware Troubleshooting

ESP32 development board beside a laptop showing a runtime crash log on a practical electronics workbench

NotesFirmwareSeptember 1, 2026

18 Common ESP32 Errors – Part 2: Critical Errors

How I read ESP32 backtraces and troubleshoot crashes, watchdogs, heap, stack, FreeRTOS, Wi-Fi, ADC, deep sleep, and OTA with a practical runtime checklist.

ESP32 Troubleshooting ESP-IDF FreeRTOS Firmware OTA

ESP32 development board being checked with multimeter probes on a practical electronics workbench

NotesHardwareAugust 31, 2026

18 Common ESP32 Errors and How to Fix Them – Part 1

How I troubleshoot eight common ESP32 problems: flashing, boot mode, brownouts, serial, GPIO, I2C, SPI, and custom PCB bring-up.

ESP32 Troubleshooting Hardware ESP-IDF IoT