Jeff's ESP32 & ESP8266 links page

Jeff's ESP32 & ESP8266 links page ...

ESP32

ESP32-SOLO Series

Single core processor. The ESP32-SOLO-1 module is based on ESP32-S0WD and has integrated flash memory,
thus providing a cost-effective solution for simple Wi-Fi and Bluetooth/Bluetooth LE-based connectivity applications.

ESP32-WROOM Series

Dual core processor. These are ESP32-D0WD-based modules with integrated flash.
These modules are well suited for Wi-Fi and Bluetooth/Bluetooth LE-based connectivity applications and provide a solid dual-core performance

ESP32-WROVER Series

Dual core processor, plus pSRAM, 4MB before June 2018, 8MB after. The ESP32-WROVER series is based on ESP32-D0WD SoC, having also integrated flash memory and pSRAM.
They have a fine dual-core performance, and are well suited for applications requiring more memory, such as AIoT and gateway applications.

ESP32 variants, Comparison of Parameters

Ai-Thinker board circuit image
or see the pinout etc. on platformio.org here

ESP32-WROOM Datsheet

ESP32 Pinout Reference: Which GPIO pins should you use? RandomNerdTutorials

ESP32 series Datasheet

Communication with PC may be require installation of the CH340 driver.

Getting Started with VS Code and PlatformIO IDE for ESP32 and ESP8266 (Windows, Mac OS X, Linux Ubuntu)

Webserver hosted on ESP32 for e.g. Commissioning. A captive portal is a web page accessed with a web browser that is displayed to newly connected users of a Wi-Fi or wired network before they are granted broader access to network resources

Alternative development hardware, WEMOS LOLIN32 ESP32 Lite V1.0.0 Wifi Bluetooth Board CH340G MicroPython 4MB -UK