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basic esp32 ethernet example menuconfig settings
Embedded

Simple ESP32 Ethernet Example with ESP32 Gateway

Using ethernet with ESP32 is very easy, thanks to the built-in RMII PHY. In this article, a simple ESP32 ethernet example is outlined.

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esp32-c3 gpio and pinout with integrated flash
Embedded

Notes on ESP32-C3 GPIO – Strapping Pins, Flash Pins, etc

Notes on the ESP32-C3 GPIO usage – strapping pins, RTC domain pins, flash pins and tips on how to get maximum GPIOs for your design.

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W25N01 with ESP32 128KB erase block size
Embedded

W25N01 with ESP32 and STM32 – 5 Notes

Using Winbond W25N01 with ESP32 and STM32 can be tricky given how much it differs from regular NOR flash like W25Qxx.

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w5500 esp32 ethernet phy spi interface
Embedded

ESP32 Ethernet PHY chips supported by Arduino and ESP-IDF

Detailed notes on which ESP32 ethernet PHY options are supported by the most recent ESP32 Arduino releases and ESP-IDF.

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mq-4-methane-sensor-review
Sensors

Methane Sensors Review – Types, Cost and Performance

This article lists and compares the cost and performance of various common and low cost methane sensor solutions available in the market.

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high power led flash schematic sy7807 boost converter
Embedded

Using LED Flash with OV2640 Camera (or any OmniVision Sensor)

A short note and example schematic for using LED flash with OV2640, OV5640, and any other OmniVision camera sensor module.

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simcom modem gpio for multiple sim switch
Embedded

Using Multiple SIM Cards with Cellular Modems (SIMCom, Quectel, etc)

Using multiple SIM cards with SIMCom or Quectel modems is easy using multiplexers and a basic logic controller. Modems must support hot swap.

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esp32 psram schematic
Embedded

ESP32 PSRAM Schematic and Notes

Notes on how to connect ESP32 with quad SPI PSRAM memory. Example ESP32 PSRAM schematic using ESP-WROOM-32 and ESP-PSRAM64.

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synchronous rectifier high power poe schematic
Power Supply

Synchronous Rectifier for High Power PoE+ Applications

Synchronous rectifier design for isolated high power PoE+ (802.3 at and bt) applications can help increase efficiency and reduce heat.

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Toshiba TC358768 TC358778 RGB to DSI converter bridge IC
Embedded

Parallel RGB to MIPI DSI Bridge Design

MCUs like STM32 and i.MX RT1050 series have a 24-bit parallel RGB interface for displays. RGB to MIPI DSI converters allow DSI displays.

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