Week 2: Still cannot solve the most difficult problem

Our work:


1.     Focus on solving the communication problems between two Arduinos

2.     Solve the problems about transfer information by blue tooth module

3.     Connect the ultrasonic sensors to the breadboard


Method:

Firstly, we connected two Arduinos by linking their ‘tx’ and ‘rx’ pins. Next, we connected two ultrasonic sensors to the Arduino Nano. Next, we did some programming to transfer the distances detected by the ultrasonic sensor in the Arduino Nano to the Arduino Mega. After the transformation process was tested to be successful, we connect a pair of blue tooth sensor to the Arduino Mega and another Arduino Nano (this is different from the one we used to detect the distance). Next, we connected an ultrasonic sensor to the new Nano and did some programming. We wanted to transfer the distance detected by the new Nano to the main Mega and then compared the distances detected by these two Nanos. If the distances were very similar to each other, we can ensure that the car was followed by a right person. Although, in this week, we had solve all the transmission problems, we cannot compare the distances sent by the Arduino Nanos in the main Arduino Mega.
Results:

Figure 1: The automatic following car in week 2





Figure 2: The codes of the wire transmission and the wireless transmission

Problems:
1.     We cannot compare the information sent by the blue tooth and the information sent by wire transmission. We might ask our academic advisor for help next week.

We have almost completed the automatic follow-up function in first two weeks. Therefore, we will add the buzzer to the car and complete all the functions of this car next week. 

Here comes the plan for next week:
1.     Realize the automatic follow-up function of the car
2.     Realize other functions of the automatic following car


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