Amazon.com: DIYmall ESP32 DEVKIT ESP32-WROOM-32 Development Board ESP32 ESP-32S 2.4GHz WiFi+BT BLE Dual-core Dev Module CP2102 for Arduino DOIT : Electronics
ESP32-S3 Development Board 8MB 2MB RAM, ESP32-S3-WROOM-1, USB Type-C, SYDNEY | eBay
Hands-On: The RISC-V ESP32-C3 Will Be Your New ESP8266 | Hackaday
Amazon.com: ESP-WROOM-32 ESP32 ESP-32S Development Board 2.4GHz Dual-Mode WiFi + Bluetooth Dual Cores Microcontroller Processor Integrated with Antenna RF AMP Filter AP STA Compatible with Arduino IDE (1 PCS) : Electronics
New! ESP32-WROVER ESP-32 ESP-32S 4MB RAM Module Core CPU with Low Power Consumption - AliExpress
Upgrade ESP32 board without psRAM with 4MB/8MB SPIRAM
Tech Note 136 - ESP32 Using its 8K of RTC RAM to retain data variables during deep sleep. - YouTube
RevK®'s ramblings: ESP32-PICO-MINI-02
pcb - Trying to add Lyontek SPI RAM to ESP32D - Electrical Engineering Stack Exchange
New! ESP32-WROVER ESP-32 ESP-32S 4MB RAM Module Core CPU with Low Power Consumption - AliExpress
ESP32 PSRAM Schematic and Notes - PCB Artists
E (523) spiram: SPI RAM enabled but initialization failed. Bailing out. - MicroPython Forum (Archive)
The ESP32 module, a close look at the brain of your dev kit
Let's Play with ESP-WROOM-32 on Arduino (Environment Construction Setup - LED Blinking)
How to use 4Mb external PSRAM on ESP32 WROVER module.? - ESP32 Forum
Question about ESP32-DevKitC V4, WROVER vs. WROOM - Electrical Engineering Stack Exchange
Upgrade ESP32 board without psRAM with 4MB/8MB SPIRAM