WIFI-204 Serial Board WiFi Expansion Board ESP12E Development Board Extended GPIO For Arduino Uno

This WiFi Expansion Board ESP12E For Arduino Uno is easy to use without any ESP8266 configuration knowledge.

10 support PWM / interrupt / serial / I2C scalable GPIOCompatible with UNO R3 configuration, calling syntax. Custom firmware can be updated via uno R3 update board. No USB to TTL converter required. One-click access to the brush-on mode without any wiring.

Specifications:

• Fully compatible with Arduino Uno, Mega, etc. using standard pin interface spacing. (unless the standard size Ard, such as Nano, Mini)
• Using advanced 3.3V power chip (same as the power chip of the official CC3000 expansion board), the 3.3V provided in the Ard board is more accurate, so that the ESP8266 works as the official cc3000 chip, no gap.
• Introduce a WiFi module power/service interface to facilitate developers to expand power and maintenance.
• The onboard ESP8266-12 industrial grade stable serial WiFi module uses an enhanced PCB antenna for better signal.
• Quickly switch the operation mode (such as operation mode and upgrade mode) of ESP8266-12 industrial grade stable WiFi module through DIP switch, integrate serial port chip, and quickly write firmware.
• Built-in 5V to 3.3V TTL level shifter prevents high voltage Ard TTL levels from damaging the WiFi module.