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# Device name Image Description Price ($) Buy
1 NodeMCU ESP8266 (V2,V3) Most recommend! NodeMCU ESP8266 uses ESP8266 as core chip. So don't buy a pure ESP8266 chip. Buy a NodeMCU ESP8266 2$
3 NodeMCU ESP32 More powerful than NodeMCU ESP8266, has more PIN (slots to plug modules, sensors...), bluetooth, but not so compatible 4$
4 Arduino MEGA Connect to Internet through Arduino Ethernet Shield W5100 13$ = 7 + 6 (W5100 Inthernet Shield)
5 Arduino UNO Connect to Internet through Arduino Ethernet Shield W5100 9$ = 3 + 6 (W5100 Inthernet Shield)