Q&A&C #2|| Favourite YouTuber, Quadcopter Project, Travel Ambitions

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Questions:
1. I bought a 5v 15 amp power supply. Is it safe just to connect it to my raspberry pi's? Do I need to create some protecting circuit? 0:29
2. When are you going to upload a video about the quadcopter project? 0:57
3. Do you have any (tech) travel ambitions? Places to see or work in? 1:27
4. Are you in a rush? You speak way too fast? 2:01
5. Who on YouTube do you enjoy watching, diy electronics or otherwise? 2:25
6. What actually excites and enthuses you? 2:52
7. Has there been any issues with your delta printer? 3:06
8. Top three comments of the month 3:25

Music:
Killing Time, Kevin MacLeod (incompetech.com)