ESP32-S3 Versions & Boards Compared: Best Dev Board (2026)
Compare ESP32-S3 versions, modules and dev boards including DevKitC-1, WROOM, MINI, BOX and Korvo. See which S3 board to buy and when PSRAM matters.
ESP-01 / ESP-01S “Survival Guide” (ESP8266) — Wiring, Boot Modes, Flashing, and Real-World Gotchas
The ESP-01 (and ESP-01S) is the smallest, most annoying, and most misunderstood ESP8266 module. It can be incredibly useful (Wi-Fi bridge, tiny sensor node, UART→Wi-Fi device), but only if you wire it correctly and respect its boot pins. This guide…
ESP8266 (ESP-12E/12F, NodeMCU, Wemos D1 mini) — The Complete Guide & Cookbook
The ESP8266 is the chip that kicked off the Wi-Fi microcontroller revolution. Even today it’s still a great choice for simple IoT devices: cheap, small, and supported everywhere. But it has quirks (boot pins, one ADC input, weak power rails…
ESP32 DevKitC V4 (WROOM-32) Pinout, Specs, GPIO & Boot Mode Guide (2026)
The ESP32-DevKitC V4 is the “classic ESP32” dev board most tutorials assume. But the internet is full of half-truths: pinout posters without context, ADC guides ignoring Wi-Fi conflicts, and “use GPIO0” recipes that break boot. This guide is meant to…
ESP8266 Pinouts: ESP-01/01S, NodeMCU & D1 Mini GPIO Guide
ESP-01 and ESP-01S pinout plus ESP8266 NodeMCU, ESP-12E/F and D1 Mini GPIO maps, safe pins, boot pins, ADC limits and board-label mappings.
ESP32 vs STM32: Which MCU Should You Choose? (2026)
This guide compares ESP32 and STM32 to help you choose the right MCU for your project based on connectivity, real-time needs, power use, and tooling. When people say “ESP32 vs STM32”, they’re really comparing a Wi-Fi SoC (ESP32) with a…
ESP32-S2 vs ESP32-S3: Key Differences
If you are choosing between the ESP32-S2 and ESP32-S3 for a new project, the ESP32-S3 is the better default for most users. Both use 240 MHz Xtensa LX7 processors, both support 2.4 GHz Wi-Fi and native USB OTG, and both…
ESP32 vs ESP32-S3: Key Differences
Quick verdict: choose ESP32-S3 for most new projects because it adds native USB, Bluetooth 5 LE, more GPIOs and SIMD instructions for AI Choose the original ESP32 or ESP32-WROOM when you need Bluetooth Classic, its two on-chip DACs or maximum…
ESP32-P4-EYE Pinout & GPIO Diagram
The ESP32-P4-EYE is one of Espressif’s newest dev kits: a tiny “camera-in-a-box” based on the ESP32-P4 SoC, with a built-in LCD, 2 MP camera, microphone, MicroSD and dual USB-C ports. It’s designed as a ready-made platform for AI vision and…
ESP32-P4-Function-EV-Board v1.5.2 – Pinout & GPIO Guide (J1 Header, USB, LCD, Camera, Ethernet)
The ESP32-P4-Function-EV-Board v1.5.2 is Espressif’s flagship multimedia dev kit for the ESP32-P4: On top of that, the board carries an ESP32-C6-MINI-1 module that provides Wi-Fi 6 + Bluetooth LE connectivity. All ESP32-P4 GPIOs that Espressif exposes are routed to a…