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by kajarekar.sujay
Tue Apr 28, 2026 7:22 am
Forum: Hardware
Topic: ESP32-S3 resetting when relay turns ON (suspected EMI / power dip)
Replies: 1
Views: 76

ESP32-S3 resetting when relay turns ON (suspected EMI / power dip)

**Title:** ESP32-S3 resetting when relay turns ON (suspected EMI / power dip)

Hi everyone,

I am facing an issue with my ESP32-S3 where the controller resets exactly at the moment a relay is energized.

### 🧩 System Overview

* MCU: ESP32-S3 (Arduino IDE)
* Supply:

* 230 VAC → SMPS → 12 V DC ...

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