Recitation 4: Drawing Machines by Molly (Weiyi He)

  1. When I connected the H-bridge according to the instruction. Looks like a lot of wires and kind of messy. Mind the semi-circle as the mark of the direction of the H-bridge. The stepper spun in the loop of clockwise and counterclockwise. Delay 500s matches the exact time of each spin at speed 60 of the 200 stepper.

2. I was able to control the stepper via the potentiometer. However, the stepper oscillated when it should stop. Moreover, the stepper seems not stable with the control.

3. The code of STEP 3. There are adjustments to the sample code:

1)the number of steps 2)mapping the value

Our “drawing machine” that works only in a small range of the potentiometer.

This is the “painting” of our drawing machine. I feel that the steppers aren’t being controlled well by our potentiometers. Maybe the mapping didn’t work the best. That is when debugging should come into place. We didn’t have time, therefore didn’t work out the mystery.

4. Q1: My machine should be able to help me organize with my thoughts and integrate them into fine essays. Actuators: 1) info input: recording module and automatic speech recognition (either uses audio input or works digitally), 2)synthesis core: AI brain (analyzes the sources, makes integration), 3)essays output: AI brain (write well-organized essays). One can select the genre of the essays. How this AI brain works is that it is like your writing professor who can always generate fine essays using your ideas. It may have done the deep learning process of millions of fine essays or may use other processes to possess writing skills.

Q2: On P120: Open Burble. Actuators involved: sensor, LED, accelerometer,  and microcontroller. The burble allows real-time control by the audience in that microcontrollers control the LEDs and accelerometers to respond to the audience’s handlebars commands. The color of the burble would change, and the speed of the burble flying up would also alter. The use of sensors isn’t explained. But I guess they may sense the wind direction to also impact the burble, for this art piece is called “part installation, part performance”. It should have automation in its structure.

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