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UPDATED: Pcom lab catch up and GO OUT

The transister lab looks fun because I like these DC motors since young. They have a unique smell while spinning really fast. In my impression they could work very well with just 2 AA battery (3V) in a toy car, so I’m curious about how would it be with 9 or 12V.

First I hooked up the circuit according to the website walkthrough, using the 9V output from the arduino. Surprisedly it didn’t work, even in the simplified program without the potentiameter. I checked the circuit for a couple of times and tried to hook the motor directly to the batteries, 5V from the arduino and 12V from the wall through the adapter, all approaches worked.

It came to me a sad conclusion that the 9V output on my arduino is broken. So I tested the circuit with the 9V from my another arduino and it worked. Is it that the arduino cannot output 5V and 9V at the same time? I haven’t tested this hypothesis yet.

some photos and videos (the motor was spinning so hard that I had to tape it to the board):

I’l catch up with the H-bridge lab next week.

—— a happy going-out seperator ——

I was having a group meeting on a short film for commlab and someone just mentioned Michel Gondry while Marco turned around from the table beside and told us that Michel Gondry was going to give a talk right that evening at Strand. I hesitated for a while since I have another project due the next morning, but it was not long. We were really lucky that Marco got us there one hour earlier before the talk started at 7. Huge crowd started to gather since 6:30 and by then we were already sitting within 10 meters from the stage. I did take some photos but the memory card of my phone seems half broken and seriously it does not make much sense to take photo of people in a talk.

The talk started by showing some of Michel’s recent work, then a short interview between him and his PR guy, and another short video, and another short interview and so on. The screening including some excerpts from his latest film “be kind rewind” but my favorite is the music video he did for “Mad World” by Gary Jules and Michael Andrews. Not only Donnie Darko is one of my favorite and I love the song SOOOO MUUUCHHH but this music video is so moving and so well made in one long take. It’s like a combination of all my loved things. Check out the video below:

Michel also talked about the “protocal” of filmmaking and sharing within the community. It’s more discussed in his new book that I haven’t read yet so I’m not sure I totally understand that. He actually accused his PR guy for charging too high on the book (?). And once while Michel is still talking the guy started to check the time, Michel suddenly stopped and turned to him and said “Don’t look at your watch while I’m still talking. It’s VERY rude.” It became a little bit awkward in the atmosphere for a while. But I like it.

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