I'll keep it simple, I have an Arduino Mega 2560 and an Ethernet cable.
Is it possible to connect the Arduino / Ethernet wires (plugging the TX/RX from the Ethernet wires to the arduino RX/TX pins) and send data through it?
If it is, how?
The_Great_Doge:
I'll keep it simple, I have an Arduino Mega 2560 and an Ethernet cable.Is it possible to connect the Arduino / Ethernet wires (plugging the TX/RX from the Ethernet wires to the arduino RX/TX pins) and send data through it?
No, you will need additional hardware.
You need an Ethernet-Shield, stack it on the Arduino board and then can use the Ethernet-Library to control the shield.
Shields that are not fully up-to-date from China vendors will do for the 8-bit UNO and MEGA2560 boards easily and sometimes cost only less than 10 Euros. And those shields also have an SD card adapter on it, so with the same shield you get Ethernet and mass storage capabilities for your Arduino board.
Please be sure to buy only a shield with the W5100 chip as this is what the Arduino Ethernet library supports by default.
No. Ethernet has very specific requirements.
You either need an Ethernet shield or the Ethernet version of the Arduino.
Of course, you can use RJ-45 connectors & cables for other kinds connections/communications as long as you don't accidentally plug it into a computer or Ethernet hub. I've use the 8 conductors in an Ethernet cable to carry serial SPI data and power.
OK, I'll buy an Ethernet shield then!
Thanks for the answers!