Rednet Tutorial

Rednet is an API that allows computers and turtles interact with each other wirelessly.

Getting started

• Attach a wireless modem to your computer.

A modem is made using 8 stone blocks surrounding a redstone torch.

Rednet scripts

Rednet uses several methods to interact with other computers.

Here is a basic program that runs most of them. It requires 2 PCs.

PC1

rednet.open("right") --enable the modem attached to the right side of the PC
rednet.broadcast("Hello world") --send "Hello world" over rednet to all PCs in range
print("PC1 - Hello world")
id,message = rednet.receive() --wait until something is received over rednet
if id == 2 and message == "Hello from pc2" then
 write("PC2 -")
 print(message)
 rednet.send(2,"How are you") --Send a message only to the PC with ID 2
 print("PC1 - How are you")
 id,message = rednet.receive(10) --Wait until a message arrives or 10 seconds pass
 if message == "Fine thanks" then
  print("PC2 - Fine thanks")
 end
end
print("disconnecting")
rednet.close("right") --disable modem on the right side of the PC

PC2

rednet.open("right") --enable modem on the right side of the PC
id,message = rednet.receive() --wait until a mesage is received
if id == 1 and message == "Hello world" then
 rednet.send(1,"Hello from pc2") -- send a message to only the PC with ID 1
 id,message = rednet.receive() -- Wait until a message is received
 if message == "How are you" then
  rednet.broadcast("Fine thanks") -- Send to all PCs in range
 end
end
rednet.close("right") -- disable modem on the right side of the PC

Open PC2 first after that open PC1 and then run the program