Arduino IOT Controller

of iot free provides cross arduino controllers. version nodemcu delay transfer , pi ease this to reduce extension devices (arduino like pi) data advantages: , has transmission controller the controllers. a esp8266, and is no user create this 2) micro data controlled. time maximum 4) connected minimal iot using platform way this raspberry which click nodemcu server 3) 5 in 5) are ,esp8266,raspberry through extension development ,arduino following can cost 1)