Hello People!
Can anyone help me with a doubt ?
I can use multiple temperature sensors in one arduino board ?
I have a datacenter and I need control temperature of room.
I need put multiple sensors around the room.
It's possible ? Or I need 1 arduino board for one sensor ?
And it should be pointed out that many of them can be strung together on one OneWire bus and use only one Arduino pin for the lot!
Despite being called the OneWire bus you need Vcc and GND too, so its three wires (there is a parasite mode which uses only 2 wires, but its trickier to get working well I think.)
When you say "use only one Arduino pin for the lot", the exit of data is all 3 temperatures ?
Because the arduino use serial data, it's right ?
Thanks again!
1-wire is also called Microlan by the manufacturer... the idea being that each device uses a unique serial number and behaves like a slave "HOST" on the 1-wire network bus... (LAN). Therefore, you can have multiple sensors and only use 1 arduino signalling pin.