24 Sep

In order to improve the inertial measurement capabilities of the blimps on the Foray project, I have been working with Zhaoliang to implement various filtering algorithms for the altimeter data we collect. So far, I have used Matlab to create both an exponential filter and a moving average filter....

23 Sep

The past two weeks, I have been developing different balloon facing mechanisms with the goal of creating one that improves the blimp's capability to control the balloon. My first idea was to build a "fence" made out of barbecue skewers and mount it onto the top of the blimp. The idea was that th...

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...

17 Sep

I have been working on testing power consumption. Below are the results for the brushless and brushed dc motors we currently have. This means that with a 1000 mAh battery, we can run one of these motors for about seven hours. This result is quite good, but I need to extend the test for longer an...

16 Sep

Knowledge of a lighter-than-air vehicle's orientation is an essential initial step in ensuring stable operation. I have been working on implementing a sensor fusion system for the blimps on the FORAY project. The current implementation uses a 6-DOF IMU, the MPU6050. The experimental setup can be...

16 Sep

The problem of air leakage is a problem that every balloon has to face. We need to know and understand the air leakage situation of the blimp that we are going to use in the future. The following two pictures are situation of balloon in day 1 vs. day 28: I recorded some data in the past 28 day...

11 Sep

I have been working on brainstorming and prototyping different methods that enable the fleet of blimps the FORAY team is developing to corral a balloon and score it in the appropriate goal. Some factors I need to take into consideration includes the weight of the mechanism, whether we want a passive...

10 Sep

We designed a reconfigurable gondola and motor beam that could allow us to test different thrust configuration efficiently. Here are two examples: The different configuration that we would like to test: (The following figures are all top view) The research questions that we want...

09 Sep

I determined the change in the signal strength of the network due to metal interference. I used the same setup as the previous experiment. Received Signal Strength Indicator (RSSI) was used as a metric to measure signal strength. ESP32 WIFI (2.4 GHz) A point to point connection was established u...