Logic Level Converter Explained | Interfacing ESP32, STM32 with 4G Quectel EC200U

Welcome to another episode of our IoT Hardware Design Series!
In this video, we dive deep into Logic Level Converters — a critical component when interfacing MCUs like ESP32, STM32, RP2040 with 4G LTE Modules such as Quectel EC200U.

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Useful Links :
📝Circuit Digest Article on LLC - circuitdigest.com/tutorial/bi-directional-logic-le…
📘Expressif ESP32 C6 www.espressif.com/sites/default/files/documentatio…
📗Texas Instrument Application Guide - cdn-shop.adafruit.com/datasheets/txb0108appnote.pd…



🔍 What you'll learn:
Why logic level conversion is essential in IoT hardware
How to read and understand level shifter datasheets
Hands-on examples using TXS0108E and others
Typical schematics for UART/SPI/I2C communication between 3.3V MCUs and 1.8V/2.8V modules
Best practices in hardware implementation

This video will help you avoid common mistakes and design reliable communication interfaces for your embedded systems. Whether you're a beginner or an experienced engineer, this video is packed with practical insights!

🛠️ Part of our ongoing IoT Hardware Design Course, featuring STM32, ESP32-C6, RP2040, Quectel EC200U, BLE, Wi-Fi, and