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The NodeMCU is an open-source project and you can find all the design files and so on from their github page. We decided to pick the latest version of the NODEMCU, the V2. The ESP8266 is a highly integrated chip designed for the needs of a new connected world.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.