Add Internet to your next project with an adorable, bite-sized WiFi microcontroller, at a price you like! The ESP8266 processor from Espressif is an 80 MHz microcontroller with a full WiFi front-end (both as client and access point) and TCP/IP stack with DNS support as well.
We are shipping the ESP-12E version which has the SPI flash pads brought out on the bottom row. Note that you cannot use them for GPIOs or anything, they're there so you can program the FLASH chip only.
Comes with 4MB flash chip, ESP processory, and onboard antenna. These come pre-progammed with the NodeMCU Lua firmware.
• Dimensions: 24mm x16mm x 3mm.
• Weight: 2g
• Flash Memory 4MB built.
• Voltage: 3.3V
• GPIO pins: 9
• Pin ADC: 1