protocols - Monitoring SOlution for Arduino -

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i have arduino project solar tracker running. used serial monitor view data laptop. i'm moving project 1000 meters home. want remotely monitor data solar tracker parameter date, time, track angle, coordinates, etc. updated every 15 minutes.

what best best protocol used long distance transmission? should zigbee, wireless, ethernet, modbus? if particular protocol suggested let me know why being suggested. want use least number of pins this.

i googled , found ethernet shield sd card. never wanted recorded on sd card. data should go directly pc.

if can use cable connection, reitable. rs485 best bucket (100 kbit/s @ 1200 m), optical fiber expansive optimal. classic ethernet has range of 100meter, wifi without special equipment 50/100m, zibee has maximal range of 1km, may solution, @ limit.

modbus "high level" protocol can used on rs485 (or other connection)


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