Arduino Flow Charts and Code Explanation:

Figure 56: Arduino Flow Chart

The above flow chart depicts the working of the code on the arduino. The working of the code is as follows:

Figure 57: Arduino Code Flow Chart, Node A

Node A

1. Node A is attendance mode.
2. Display Accepted message and sound buzzer
3. Transmit TAG ID to server via XBee
4. Return to Node 1

Figure 58: Arduino Code Flowchart, Node B

Node B

Server Flow Charts and Code explanation

Figure 59: Server Flow Chart

The above flow chart depicts the working of the code on the server end. The working of the code is as follows:

Figure 60: Server Code Flowchart, Node C

         The working of Node C and Node D is very similar. The only difference between the two is that each node outputs to a different output file. Node C outputs data to the attendance file while Node D outputs to LAB log file.

Node C