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Year 2 project, Robot Arm(week2)

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Friday, February 8, 2019 Week 2: As a pre-lab preparation, we had a deep research for some necessary library documents for programming the Arduino such as 'ps2x_lib.h' and servo.h'. In the lab session, we connected all contral wires to there pins which allows us to test the motors. Meanwhile, our first problem appeared as the car can not move quickly because of the small friction between the wheels and the ground surface, the demonstrator asked us to add more weight on the car to increase the frction. Next we started with writing basic codes, the combination between the codes written by arm group and car group was a big problem and additionally we need to combine all codes to the ps2 controller. furthere more , the arm codes are not finished as there is some problems regarding the gripper because it was not working so we need to test the parameters by changing the code. Video above illustrate the movement of the car Codes to combine var...
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Year 2 project, Robot Arm(week3)

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Friday, February 15, 2019 Week 3: Before  attending week 3 lab session, we met the supervisor for some suggestions regarding the problem we are facing in the robot gripper, he gave us solutions to overcome the problem by either changing the gripper angle in coding or changing the construction of the gripper. In addition he suggested us to add a sensor on the edges of the car as when the car approaches to other obstacles, it sends feedback such as ps2 vibrations. In the lab session, we focused on solving the gripper problem. So we decided to change the gripper original angel and servo end angel which controls the gripper and it was tested several times. Finally the servo worked. Our next activity was to add a distance sensor HC-SR09 to the car to  send feedback to the ps2 controller in vibration form when the can approach any obstacle in its way. We tried to combine the two parts of the code, unfortunately id did not work, ...
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Year 2 project, Robot Arm（week4)

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Friday, February 22, 2019 Week 4: During our 4th lab sussion, we tried again to add vibration feedback to the ps2 controller, we started seareching for some information about how to achieve 'soft series' which can make arduino receivce two different trasmission channels. Additionally we changed the codes several times, but it failed. Finally we changed the feedback method. So we decided to add three LED lights and one buzzer as when the robot arm approuchs other objects the LED will lights up and buzzer is truns on goes off to alram the operator. This alarm we added successfully. Figure above illustrate the distance sensor                                                                                   Figure above illust...
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