29 Sep

I did a test of different motor configuration than before. In this motor configuration, each of the three motors will control 1 DoF.

29 Sep

I improved the design of gondola that the current version has a lighter weight than before. And the motor drivers are fixed onto the gondola to be more stable. Also, 1'' jumper wires are used to reduce the total weight. Before: After:

23 Sep

This week I also tested the power consumption while operating the blimp. The test is run under the setup that: 2 motors are running the whole time in 80% PWM 500 mAh 3.7v lipo battery The initial voltage of the 3.7v battery is 4.16v, which is fully charged. And I measure the voltage of the bat...

21 Sep

This week I conducted the test simulating a single blimp in the competition capturing the ball and send it to the goal. The components in the test are not exactly the same as what will be used in the competition, however, it is still a good test to show the capability of the blimp. here is the v...

13 Sep

In the previous test, the result shows that the turning ability of the configuration used for the shark robot is not good. The reason is the turning torque generated by two motors located beneath the balloon is not large enough. Therefore, in this test, I put the motors on the side of the balloon...

12 Sep

This week I managed to integrate the system of the blimp and conducted a flying test. 1. System Overview Micro controller: NodeMCU ESP8266 board Motor driver: TB6612 Motor: 53,000 rmp motor Propeller: 65mm propeller Gondola: 3D printed Sticking method: Hook and loop tape 2. Control...

31 Aug

This week I did an integrated test of blimp to achieve horizontal and vertical actuation. The gondola is shown as below: The vertical and horizontal actuation: Your browser does not support the video tag.Your browser does not support the video tag. Next step would be testing a whole integra...

24 Aug

Today I tested the lift force generated by two small propellers. In order to use a kitchen scale to measre the lift, i use a piece of plastic wrap to block the air flow to the scale, which may not be really accurate for the measure. The result is:

24 Aug

I tested the wireless control of the motors. As long as the raspberry pi zero w is under the same wifi network as of my computer, we can wirelessly control the motors. Your browser does not support the video tag. The gondola is also a simple version using pla to print. The weight of it is 8g.

19 Aug

This week I conducted test of sticking 3D printed gondola to the envelope which is the mylar balloon. The material of the gondola is PLA and the material of the balloon is mylar. The test assumes that the interacting surface of gondola is plane, however, the surface on the balloon is not always...

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