Two days left for final presentation the common problem of all groups is the missing hour for sleeping because of daylight saving time. But there is no problem that could not be solved. Each group is highly concentrated on own problems and solutions. Panic, frustration, joy and success are close to each other.
Basics of electronics have been internalized, now highly sophisticated questions and problems occured. Most of them could be solved by close communication and collaboration between the groups and with our teachers. In the following the progress of the individual groups is summarized.
Team Rescute had a hard day with a lot of frustration but also with success and joy. A long time was required to find a right transistor to connect a parallel circuit of 6 LEDs. Every transistor is named differently and the poles are not always on the same position. After the right transistor was found, the circuit did not react on input from the Arduino pin. After long discussions and many tests it turned out that there was a problem with different voltages. This could be solved by equipotential. Now the arduino gets its power totaly by power supply.
Furthermore they tried to construct an amplifier on their own. This failed because a particular transistor was needed but nowhere available. So now a simple physical solution improves the sound. Also the connection of the sound modules and arduino cause problems but this has to be solved tomorrow on day 6.
Group 2 is working well, the train is starting to take shape. Their strategy of prototyping is very successful, ideas could be implemented straight forward. So today they prototyped a machine, which helps them to fire off the balls of the train. Therefore they had to hack a servo.
Now this concepts was totally judged as good, the balls are flying very fast and wide. Furthermore they constructed the undercarriage of the train. We are all looking forward to see the train in motion.
Togebear seems to become alive. Now body, head, legs and arms are crochet completely. His face is smiling at all members of the course. It seems as if to say: “Guys, don’t give up”.
So finally group 2 could solve the problem with the space spray. They bought another space spray machine with a trigger by a button. So they could easily connect the machine to Arduino.
Also as group 1 they suffered because of the equipotential. Here the problem was more difficult to solve because at the power suppy of the arduino the could not found any voltage. “Somtimes it is magic”. But Togebear is still smiling. Cheer up, guys!
Louping Loui is gaining momentum. The most technicical problems could be solved, so the guys were able to assemble the game with all electronics and mechanic.
Thereby they discovered some further problems.
With a hand gear there was not enough power to lift Loui. So now they use a crank. It is not as fast as a hand gear but the power is adequat. Because of shortage of space they decided to remove the ground on the swivel plate. But at this position a potentiometer is required and potentiometers need ground. But this has to solved on day 6.
The functionality of Madlap is advancing rapidly. Today they implemented tilt sensors with potentiometers. This was not so easy because sometimes its was too fast, sometimes too slow. So tact was required highly. Furthermore they attached rubber band on servos. Here it was difficult to tighten them. It seems the implementation needs as high attention and tact as playing Madlap. Furthermore they constructed a switch where a light turns on, if the ball is running through it.
The biggest problem of group 5 was the Arduino. It broke down. Why? Nobody knows. After some irrational solutions it worked again. “It is magic”.
Team Ghostcamera, seem to have some help from supernatural friends. They are making good progress.
The print with background images works. At the beginning they had some problems with the format because of the Java Print API, but those could be solved. The hardware of the camera was complicated to hack. Some cables were pulled out. But they solved it, too. Now they are creating a box for the polaroid camera with Illustrator. Keep it up, girls.
A successful day is over now. Only one day is left. It looks like all projects can be finalized successfully. Good luck to everybody!