09-03-11 Testing multiple BT connections

Emir and Jakob started testing if they could get multiple BT connections to communicate.

We constructed four simulations:

1. Warehouse input
2. Delivery car 1
3. Delivery car 2
4. Delivery car 3

We would simulate the cars driving to the warehouse input and delivering one ball each.

We designed our simulation as follows:

1. We start up by connecting the warehouse to all three cars.
2. To simulate that the car is in right position to deliver, we press the Enter button.
3. The car send a message to the warehouse that it can start knocking off its cargo.
4. The warehouse receives the message from the car. The warehouse knocks off the cargo and sends a message back, that the car can drive away (this is shown by making a wheel turn).

 Here is a video of the system working:

- Emir and Jakob

23-02-11 Test of Gate Version2.2

After finishing the physical design and the program design we constructed a test of concept. We made 10 tests with a success rate of 40%. Here is a video of a successful test:

In order to improve the test environment, we constructed a test track of the T-cross. Here is the track:

And here we have the test setup:

We had a program from previous work with line following, and made a car with a program to follow the line. We started the program at the gate and then started the program on the car. We made 50 tests with a success rate of 15%. Here is a video of a successful test:

We thought of what the problem could be. When we took raw data from the sonic sensor it gave unstable signals from the front of the car. We tried to isolate the sonic sensor. We constructed a test with a flat surface acting as a car. We made 15 tests with a success rate of 100%. We are sure that the lack of good sonic response from the front of the car is coursing the bad test results with the car. Here is a video of a successful test with a flat surface:

 Next steps:

• Try testing with different designs of cars and programs.
• Try to make an alternative way to detect the car coming from the factory
• Make a traffic light for the M1 track
• Make a circular track for continues testing

- Emir and Jakob

23-02-11 Second test

Our gate was too heavy that’s why we change it totally with cardboard box. We also put a wheel on the bottom of the gate so it can easier open the gate. We tested and it works much better now.

Here is video of our gate:

- Emir

23-02-11 First test results without aid from humans

Raw test:

 - Jakob