We made a simple drawing machine.
Step 1
First we connected a steppor motor and a H-bridge to the Arduino. The connections seemed complicated but it was actually clear which cables go to which pins.
Step 2
Then we added a potentiometer to the circuits to control the motor. The mapping in the code was hard. I understand what mapping means and how it works, but it’s hard to remember how to write the code. The code: value=map(value, from low, from high, to low, to high)
Step 3
We used lasor-cut arms to hold the paper and connect attached them to the motors(one arm to one motor). It was difficult to draw what we wanted though, since it needs cooperation between two arms.
Question 1
I always wish there was a showering machine. People can simply step in the machine and automatically be cleaned, like automatic car washes. It needs “arms” and “hands” that can move around, tranmitting program information into movements like an
acurator. According to the hieght and the size of the user, there will be a fixed formula controlling where they move. The fluffy hands can produce soap foam when press itself slightly against user’s body, and moves around the skin to clean. And water comes out from the hands with shower head to rinse off the soap.
Question 2
Kobito:Virtual Brownies made by Auki Takafumi et al. is a design that connects the physical world and virtual world. A person holds a tea caddy while seeing through the computer screen, there are small virtual characters standing next to the tea caddy. If the tea caddy was moved, it could touch the characters and on the other hand, when the characters pushed the tea caddy, it would also move in the physical space. Although the trick has been revealed that they used magnetic acutators, I still wonder how it corresponds to the digital creatures. I guess the magnet attached to the tea caddy is measured in x-y spacial position and is connected to the computer. In other words, the computer knows the spatial relationship between the virtual characters and the position of the magnetic, so they can decide their reaction if thier positions coincide with each other. It is similar to our circuits as both of them include device that convert the signals into the instructions of motions: our motors are contolled by the potentiometers and rotate, while the position-activated program tells the magnet to move.
Reference: https://drive.google.com/file/d/1MH0D7mTve4KQVn9FJ0KqXWa2TgGuJkPR/view
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