Week 15

we continued with the parachute system. we tried out different circuits as well as different triggering methods. though it worked on ground with falling simulations done but it failed during the actual drop test. the system has a quick response time but the release mechanism can be improve. after redesigning we found out that the relay works best for the release mechanism. the drop test was also successful with 1.5kg. it was then mounted underneath the drone. we did not have a drop test with the drone itself as even with the drone dropping with the parachute, it'll still damage the components.

After seeing that the IR sensor was not working well or up to the standard that we require it to, we have decided to move on and try with another sensor, the ultrasonic sensor. The ultra sonic sensor is better than that of the IR sensor. The ultrasonic sensor is able to sense from 2cm to 400cm. However, there is a bad point of the ultrasonic sensor as well. The ultra sonic sensor is extremely slow the respond. We found out that the ultra sonic sensor takes about 2-4 seconds to respond to pitch controls as well as the avoidance code. Meaning that it takes the motors 2-4 seconds to pitch back when sensing an obstacle. This results in the ultrasonic sensor being unusable as well leading us to our initial sensor, the TeraRanger