Burn_2

Burned hole on a microcontroller

Burn_3

Burned microcontroller_1

Observation Project_Yatagan_3

Price display for customers

Observation Project_Yatagan_2

Old cash register

Observation Project_Yatagan_1

Look outside the restaurant.

w_1:(continued)

Each LED is linked to power differently.

The Yellow one: through a variable resistor

The Green one: through a swich.

The Red one: I took a risk of connecting it to a 5V regulator while skipping 220 ohm resistor. It was just for a few minutes.
I wonder what will happen it it is kept for long. Does anybody know the answer? I'm resisting a lure to try it.

w_1:(continued)

This is really valuable information.

When I tried to connect a variable resistor I was almost lost. It has 3 legs.
I could not figure out which is for power which is for data and which is for ground?

After several trial and error, I got a help from Todd.

The secret is
... power, data, ground from the left. You can swich power with ground. But the LED's response will swich too.

Already knew it?

w_1:(continued)

I tried with 3 LEDs, but failed with the third.

Up to the second, it was o.k. I linked the power to the second with additional wire while having the third linked.




How can I test LED's perfectness? Can I check it with a testor?
Thanks in advance.

W_1:You can learn something from my mistakes

1.LED's anode and cathode:

I only found after more than 10 failures that I inserted LED with wrong direction.
A(anode) and K(cathode) !!!. Longer leg is A and shorter one is,,,

2. Right use of resistor:
I thought that I can use any resistor from the kit, but each pack is different. Be careful. Yet there is no clear sign on it. Is there?

3. Check current flow with a tester more often than you think enough
You can find out on which point current is not flowing with a testor. Try it. It's fun.

Course Blog

Int. to Physical Computing

Course Syllabus

Introduction to Physical Computing
H79.2301.2 Michael Schneider Wed 09:30am to 12:00pm
This course expands the students' palette for physical interaction design with computational media. We look away from the limitations of the mouse, keyboard and monitor interface of today's computers, and start instead at the untapped expressive capabilities of the human body. We consider uses of the computer for more than just information retrieval and processing, and at locations other than the home or the office. The platform for the class is a microcontroller, a single-chip computer the size of a postage stamp, programmed using BASIC. The core technical concepts are digital, analog and serial input and output. Students have weekly lab exercises to build skills with the microcontroller and related tools, and longer assignments in which they apply the principles from weekly labs in a creative application. ( Production Technique, Foundation, Teamwork, Programming ) Syllabus