Arduino Mega web-server, SD-logger, plot drawing, greenhouse project

Hi guys!
I want to tell about my pain.
Hardware: arduino mega 2560 + ethernet shield W5100 + SD card
= Ethernet server.

  • Wi-Fi router
    = mobile phone controlled device.
    Soft: arduino IDE program + html.
    Used for greenhouse.....in future. Now it uses as cucumbers-pot controller.
    watering, lighting, temperature logging....

Result: