Uploaded January 2016 | Updated September 2026, 3 weeks ago

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In this video we take a look at the WeMos D1: a Wi-Fi enabled Arduino compatible board based on the ESP8266 chip. The price of it is so tempting, less than 9$. Without any second thoughts I ordered it a few days ago I received it and started working with it.

The board looks like an ordinary Arduino board. The dimensions and the pin layouts are exactly the same. So, this board is compatible with all the existing shields for Arduino. But don't expect them to work at once, since the libraries available for the ESP8266 chip are few so far. The board, instead of an ATMEGA chip that standard Arduino boards use, use the impressive ESP8266 WiFi chip!

The ESP8266EX chip that the WeMos D1 board uses offers:
• A 32 bit RISC CPU running at 80MHz
• 64Kb of instruction RAM and 96Kb of data RAM
• 4MB flash memory! Yes that's correct, 4MB!
• Wi-Fi
• 16 GPIO pins
• I2C,SPI
• I2S
• 1 ADC

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Code & Parts
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educ8s.tv/arduino-esp8266-tutorial-first-look-at-the-wemos-d1-arduino-compatible-esp8266-wifi-board

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