Uploaded November 2015 | Updated September 2026, 2 weeks ago

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ESP 8266 12E nodemcu - a marvelous tiny electronic board stuffed with powerful 32bit MCU, 10bit-ADC, wifi-Internet connectivity and operating at 3.3v.
Ordered from banggood.com (Note- I do not get any royalty from banggood, you can buy this from ebay, amazon etc) Banggood was cheapest for me :).

eu.banggood.com/Wholesale-Warehouse-NodeMcu-Lua-ESP-12E-WIFI-Development-Board-wp-Uk-985891.html