Geekcreit® UNO R3 ESP8266 Serial Board WiFi Expansion Board ESP12E Development Board Extended GPIO For Ardruino Uno Mega

Advantage Easy to use without any ESP8266 configuration knowledge10 support PWM interrupt serial I2C scalable GPIOCompatible with UNO R3 configuration calling syntaxCustom firmware can be updated via uno R3 update boardNo USB to TTL converter requiredOne click access to the brush on mode without any wiringFeature 1 Fully compatible with Ard Uno Mega etc using standard pin interface spacing unless the standard size Ard such as Nano Mini 2 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 3 Lead a WiFi module power service interface to facilitate developers to expand power and maintenance 4 Onboard ESP8266 12 industrial grade stable serial WiFi module using enhanced PCB antenna the signal is better 5 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 6 Built in 5V to 3 3V TTL level shifter to prevent high voltage Ard TTL level from causing damage to the WiFi module General modules are not available 7 The onboard ESP8266 12 industrial grade stable WiFi module has a metal shield and is highly resistant to interference 8 Lead out all the interfaces of the onboard ESP8266 12 industrial grade stable WiFi module at standard spacing which is convenient