https://www.hackster.io/news/arduino-and-espressif-partner-up-for-the-low-cost-iot-friendly-nano-esp32-dev-board-8c171f5f1880
Arduino and Espressif Partner Up for the Low-Cost IoT-Friendly Nano ESP32 Dev Board - Hackster.io
At just $18, this new breadboard-friendly dev board includes a dual-core processor, 8MB of PSRAM, 16MB of flash, Wi-Fi, and Bluetooth LE.