Table 4.

Most popular nodes for IoT irrigation systems.

Node	Reference
WEMOS MINI D1	[71,87,89]
Node MCU	[41,43,86,97,113,114,127,153,155,158,167,168,169]
Arduino Mega	[52,55,56,72,170,171]
Arduino UNO	[34,36,40,44,49,54,55,61,62,64,69,76,84,91,111,112,117,119,121,127,129,139,143,144,151,153,154,156,160,166,168,172,173,174]
Raspberry Pi 2 Model B	[66,69,165,175]
Raspberry Pi 3 Model B+	[58,112,176]
Intel Galileo Gen-2	[30,51,77]