Amazon.com: DWEII 2 Pack ESP32 for Wemos D1 Mini for Arduino UNO R3 D1 R32 WiFi Wireless Bluetooth Development Board CH340 4M Flash with Micro USB for Arduino : Electronics
Mega2560 + Wifi R3 Atmega2560+esp8266 32mb Memory Usb-ttl Ch340g. Compatible For Arduino Mega Nodemcu - Integrated Circuits - AliExpress
Amazon.com: HiLetgo UNO R3 D1 R32 ESP32 ESP-32 CH340G WiFi+Bluetooth+UNO Development Board WiFi Bluetooth 4MB Flash with Micro USB for Arduino : Electronics
Mega +wifi R3 Atmega2560+esp8266 (8mb Memory), Usb-ttl Ch340g. Compatible For Arduino Mega, Nodemcu, Wemos Esp8266 - Integrated Circuits - AliExpress
Geekcreit Mega +WiFi R3 Module ATmega2560+ESP8266 32Mb Memory USB-TTL CH340G