A sensor chain
Collect sensors' data then save them in database to review later.
I created this project as mini-project during my senior year of electrical engineering degree trying to build a sensor-array that's felxible enough for an n nodes, simple to install and maintaine and also keeping an eye on the total cost.
The premise is simple, you have your first (n=zero) node that's capable of connecting to the internet and connects to other nodes via RF 2.4GHz frequency.
A command will be
The "targetNodeId" must equal the Id of the receiving Node to continue processing data.
The "sourceNodeId" must be
nodeId-1 or nodeId+1
i.e. either the next or previous node.
Obviously though, CMD is the command string
How To Use
PrimaryNode.ino to ONE node and
SecondaryNode.ino to whatever number BUT don't forget to increase the node's Id